chore: update n8n to 2.2.3 and bump version to 2.31.7 (#523)

- Updated n8n from 2.1.5 to 2.2.3
- Updated n8n-core from 2.1.4 to 2.2.2
- Updated n8n-workflow from 2.1.1 to 2.2.2
- Updated @n8n/n8n-nodes-langchain from 2.1.4 to 2.2.2
- Rebuilt node database with 540 nodes (434 from n8n-nodes-base, 106 from @n8n/n8n-nodes-langchain)
- Updated README badge with new n8n version
- Updated CHANGELOG with dependency changes

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Romuald Członkowski <romualdczlonkowski@MacBook-Pro-Romuald.local>
Co-authored-by: Claude <noreply@anthropic.com>

.claude/agents/code-reviewer.md

@@ -1,6 +1,7 @@
 ---
 name: code-reviewer
 description: Use this agent when you need to review recently written or modified code for quality, security, and maintainability. This agent should be invoked immediately after code changes are made to ensure high standards are maintained. Examples:\n\n<example>\nContext: The user has created a code-review agent that should be called after writing code.\nuser: "Please write a function that validates email addresses"\nassistant: "I'll create an email validation function for you:"\n<function implementation>\nassistant: "Now let me use the code-reviewer agent to review this code for quality and security"\n<commentary>\nSince new code was just written, the code-reviewer agent should be invoked to ensure it meets quality standards.\n</commentary>\n</example>\n\n<example>\nContext: The user has modified existing code and wants it reviewed.\nuser: "I've updated the authentication logic, can you check if it's secure?"\nassistant: "I'll use the code-reviewer agent to analyze your authentication changes for security and best practices"\n<commentary>\nThe user has made changes to security-critical code, so the code-reviewer agent is the appropriate tool to ensure the modifications are secure and well-implemented.\n</commentary>\n</example>
+model: inherit
 ---
 
 You are a senior code reviewer with extensive experience in software engineering, security, and best practices. Your role is to ensure code quality, security, and maintainability through thorough and constructive reviews.

.claude/agents/n8n-mcp-tester.md

@@ -1,7 +1,7 @@
 ---
 name: n8n-mcp-tester
 description: Use this agent when you need to test n8n-mcp functionality after implementing fixes or new features. This agent should be invoked proactively after code changes to validate that the MCP tools work correctly with real n8n workflows. The agent tests the actual MCP server tools, not just unit tests. Examples:\n\n<example>\nContext: Developer has just fixed a validation bug in the n8n-mcp server\nuser: "I've fixed the validation issue for HTTP Request nodes"\nassistant: "I've completed the fix. Now let me build the project and then test it."\n<builds project>\nassistant: "Project built successfully. Please reload the MCP server in Claude Desktop to apply the changes."\nuser: "Reloaded"\nassistant: "Great! Now let me invoke the n8n-mcp-tester agent to verify the fix works correctly."\n<commentary>\nSince a fix has been implemented and the MCP server reloaded, use the n8n-mcp-tester agent to validate the fix works in real-world usage.\n</commentary>\n</example>\n\n<example>\nContext: Developer has added a new MCP tool for workflow validation\nuser: "I've implemented the new workflow validation tool"\nassistant: "Implementation complete. Let me build and prepare for testing."\n<builds project>\nassistant: "Build successful. Please reload the MCP server to load the new tool."\nuser: "Done"\nassistant: "Perfect! I'll now use the n8n-mcp-tester agent to test the new workflow validation tool."\n<commentary>\nAfter implementing new MCP functionality and reloading the server, invoke n8n-mcp-tester to verify it works correctly.\n</commentary>\n</example>
-tools: Glob, Grep, LS, Read, WebFetch, TodoWrite, WebSearch, mcp__puppeteer__puppeteer_navigate, mcp__puppeteer__puppeteer_screenshot, mcp__puppeteer__puppeteer_click, mcp__puppeteer__puppeteer_fill, mcp__puppeteer__puppeteer_select, mcp__puppeteer__puppeteer_hover, mcp__puppeteer__puppeteer_evaluate, ListMcpResourcesTool, ReadMcpResourceTool, mcp__supabase__list_organizations, mcp__supabase__get_organization, mcp__supabase__list_projects, mcp__supabase__get_project, mcp__supabase__get_cost, mcp__supabase__confirm_cost, mcp__supabase__create_project, mcp__supabase__pause_project, mcp__supabase__restore_project, mcp__supabase__create_branch, mcp__supabase__list_branches, mcp__supabase__delete_branch, mcp__supabase__merge_branch, mcp__supabase__reset_branch, mcp__supabase__rebase_branch, mcp__supabase__list_tables, mcp__supabase__list_extensions, mcp__supabase__list_migrations, mcp__supabase__apply_migration, mcp__supabase__execute_sql, mcp__supabase__get_logs, mcp__supabase__get_advisors, mcp__supabase__get_project_url, mcp__supabase__get_anon_key, mcp__supabase__generate_typescript_types, mcp__supabase__search_docs, mcp__supabase__list_edge_functions, mcp__supabase__deploy_edge_function, mcp__n8n-mcp__tools_documentation, mcp__n8n-mcp__list_nodes, mcp__n8n-mcp__get_node_info, mcp__n8n-mcp__search_nodes, mcp__n8n-mcp__list_ai_tools, mcp__n8n-mcp__get_node_documentation, mcp__n8n-mcp__get_database_statistics, mcp__n8n-mcp__get_node_essentials, mcp__n8n-mcp__search_node_properties, mcp__n8n-mcp__get_node_for_task, mcp__n8n-mcp__list_tasks, mcp__n8n-mcp__validate_node_operation, mcp__n8n-mcp__validate_node_minimal, mcp__n8n-mcp__get_property_dependencies, mcp__n8n-mcp__get_node_as_tool_info, mcp__n8n-mcp__list_node_templates, mcp__n8n-mcp__get_template, mcp__n8n-mcp__search_templates, mcp__n8n-mcp__get_templates_for_task, mcp__n8n-mcp__validate_workflow, mcp__n8n-mcp__validate_workflow_connections, mcp__n8n-mcp__validate_workflow_expressions, mcp__n8n-mcp__n8n_create_workflow, mcp__n8n-mcp__n8n_get_workflow, mcp__n8n-mcp__n8n_get_workflow_details, mcp__n8n-mcp__n8n_get_workflow_structure, mcp__n8n-mcp__n8n_get_workflow_minimal, mcp__n8n-mcp__n8n_update_full_workflow, mcp__n8n-mcp__n8n_update_partial_workflow, mcp__n8n-mcp__n8n_delete_workflow, mcp__n8n-mcp__n8n_list_workflows, mcp__n8n-mcp__n8n_validate_workflow, mcp__n8n-mcp__n8n_trigger_webhook_workflow, mcp__n8n-mcp__n8n_get_execution, mcp__n8n-mcp__n8n_list_executions, mcp__n8n-mcp__n8n_delete_execution, mcp__n8n-mcp__n8n_health_check, mcp__n8n-mcp__n8n_list_available_tools, mcp__n8n-mcp__n8n_diagnostic
+tools: Glob, Grep, Read, WebFetch, TodoWrite, WebSearch, mcp__supabase__create_branch, mcp__supabase__list_branches, mcp__supabase__delete_branch, mcp__supabase__merge_branch, mcp__supabase__reset_branch, mcp__supabase__rebase_branch, mcp__supabase__list_tables, mcp__supabase__list_extensions, mcp__supabase__list_migrations, mcp__supabase__apply_migration, mcp__supabase__execute_sql, mcp__supabase__get_logs, mcp__supabase__get_advisors, mcp__supabase__get_project_url, mcp__supabase__generate_typescript_types, mcp__supabase__search_docs, mcp__supabase__list_edge_functions, mcp__supabase__deploy_edge_function, mcp__n8n-mcp__tools_documentation, mcp__n8n-mcp__search_nodes, mcp__n8n-mcp__get_template, mcp__n8n-mcp__search_templates, mcp__n8n-mcp__validate_workflow, mcp__n8n-mcp__n8n_create_workflow, mcp__n8n-mcp__n8n_get_workflow, mcp__n8n-mcp__n8n_update_full_workflow, mcp__n8n-mcp__n8n_update_partial_workflow, mcp__n8n-mcp__n8n_delete_workflow, mcp__n8n-mcp__n8n_list_workflows, mcp__n8n-mcp__n8n_validate_workflow, mcp__n8n-mcp__n8n_trigger_webhook_workflow, mcp__n8n-mcp__n8n_health_check, mcp__brightdata-mcp__search_engine, mcp__brightdata-mcp__scrape_as_markdown, mcp__brightdata-mcp__search_engine_batch, mcp__brightdata-mcp__scrape_batch, mcp__supabase__get_publishable_keys, mcp__supabase__get_edge_function, mcp__n8n-mcp__get_node, mcp__n8n-mcp__validate_node, mcp__n8n-mcp__n8n_autofix_workflow, mcp__n8n-mcp__n8n_executions, mcp__n8n-mcp__n8n_workflow_versions, mcp__n8n-mcp__n8n_deploy_template, mcp__ide__getDiagnostics, mcp__ide__executeCode
 model: sonnet
 ---
 

.env.docker

@@ -26,4 +26,8 @@ USE_NGINX=false
 # N8N_API_URL=https://your-n8n-instance.com
 # N8N_API_KEY=your-api-key-here
 # N8N_API_TIMEOUT=30000
-# N8N_API_MAX_RETRIES=3
+# N8N_API_MAX_RETRIES=3
+
+# Optional: Disable specific tools (comma-separated list)
+# Example: DISABLED_TOOLS=n8n_diagnostic,n8n_health_check
+# DISABLED_TOOLS=

.env.example

@@ -103,6 +103,23 @@ AUTH_TOKEN=your-secure-token-here
 # For local development with local n8n:
 # WEBHOOK_SECURITY_MODE=moderate
 
+# Disabled Tools Configuration
+# Filter specific tools from registration at startup
+# Useful for multi-tenant deployments, security hardening, or feature flags
+#
+# Format: Comma-separated list of tool names
+# Example: DISABLED_TOOLS=n8n_diagnostic,n8n_health_check,custom_tool
+#
+# Common use cases:
+# - Multi-tenant: Hide tools that check env vars instead of instance context
+#   Example: DISABLED_TOOLS=n8n_diagnostic,n8n_health_check
+# - Security: Disable management tools in production for certain users
+# - Feature flags: Gradually roll out new tools
+# - Deployment-specific: Different tool sets for cloud vs self-hosted
+#
+# Default: (empty - all tools enabled)
+# DISABLED_TOOLS=
+
 # =========================
 # MULTI-TENANT CONFIGURATION
 # =========================

.github/workflows/dependency-check.yml

@@ -0,0 +1,222 @@
+name: Dependency Compatibility Check
+
+# This workflow verifies that when users install n8n-mcp via npm (without lockfile),
+# they get compatible dependency versions. This catches issues like #440, #444, #446, #447, #450
+# where npm resolution gave users incompatible SDK/Zod versions.
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'package.json'
+      - 'package-lock.json'
+      - '.github/workflows/dependency-check.yml'
+  pull_request:
+    branches: [main]
+    paths:
+      - 'package.json'
+      - 'package-lock.json'
+      - '.github/workflows/dependency-check.yml'
+  # Allow manual trigger for debugging
+  workflow_dispatch:
+  # Run weekly to catch upstream dependency changes
+  schedule:
+    - cron: '0 6 * * 1'  # Every Monday at 6 AM UTC
+
+permissions:
+  contents: read
+
+jobs:
+  fresh-install-check:
+    name: Fresh Install Dependency Check
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Build package
+        run: |
+          npm ci
+          npm run build
+
+      - name: Pack package for testing
+        run: npm pack
+
+      - name: Create fresh install test directory
+        run: |
+          mkdir -p /tmp/fresh-install-test
+          cp n8n-mcp-*.tgz /tmp/fresh-install-test/
+
+      - name: Install package fresh (simulating user install)
+        working-directory: /tmp/fresh-install-test
+        run: |
+          npm init -y
+          # Install from tarball WITHOUT lockfile (simulates npm install n8n-mcp)
+          npm install ./n8n-mcp-*.tgz
+
+      - name: Verify critical dependency versions
+        working-directory: /tmp/fresh-install-test
+        run: |
+          echo "=== Dependency Version Check ==="
+          echo ""
+
+          # Get actual resolved versions
+          SDK_VERSION=$(npm list @modelcontextprotocol/sdk --json 2>/dev/null | jq -r '.dependencies["n8n-mcp"].dependencies["@modelcontextprotocol/sdk"].version // .dependencies["@modelcontextprotocol/sdk"].version // "not found"')
+          ZOD_VERSION=$(npm list zod --json 2>/dev/null | jq -r '.dependencies["n8n-mcp"].dependencies.zod.version // .dependencies.zod.version // "not found"')
+
+          echo "MCP SDK version: $SDK_VERSION"
+          echo "Zod version: $ZOD_VERSION"
+          echo ""
+
+          # Check MCP SDK version - must be exactly 1.20.1
+          if [[ "$SDK_VERSION" == "not found" ]]; then
+            echo "❌ FAILED: Could not determine MCP SDK version!"
+            echo "   The dependency may not have been installed correctly."
+            exit 1
+          fi
+          if [[ "$SDK_VERSION" != "1.20.1" ]]; then
+            echo "❌ FAILED: MCP SDK version mismatch!"
+            echo "   Expected: 1.20.1"
+            echo "   Got: $SDK_VERSION"
+            echo ""
+            echo "This can cause runtime errors. See issues #440, #444, #446, #447, #450"
+            exit 1
+          fi
+          echo "✅ MCP SDK version is correct: $SDK_VERSION"
+
+          # Check Zod version - must be 3.x (not 4.x, including pre-releases)
+          if [[ "$ZOD_VERSION" == "not found" ]]; then
+            echo "❌ FAILED: Could not determine Zod version!"
+            echo "   The dependency may not have been installed correctly."
+            exit 1
+          fi
+          if [[ "$ZOD_VERSION" =~ ^4\. ]]; then
+            echo "❌ FAILED: Zod v4 detected - incompatible with MCP SDK 1.20.1!"
+            echo "   Expected: 3.x"
+            echo "   Got: $ZOD_VERSION"
+            echo ""
+            echo "Zod v4 causes '_zod' property errors. See issues #440, #444, #446, #447, #450"
+            exit 1
+          fi
+          echo "✅ Zod version is compatible: $ZOD_VERSION"
+
+          echo ""
+          echo "=== All dependency checks passed ==="
+
+      - name: Test basic functionality
+        working-directory: /tmp/fresh-install-test
+        run: |
+          echo "=== Basic Functionality Test ==="
+
+          # Create a simple test script
+          cat > test-import.mjs << 'EOF'
+          import { spawn } from 'child_process';
+          import path from 'path';
+          import { fileURLToPath } from 'url';
+
+          const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+          // Test that the package can be required and basic tools work
+          async function test() {
+            console.log('Testing n8n-mcp package import...');
+
+            // Start the MCP server briefly to verify it initializes
+            const serverPath = path.join(__dirname, 'node_modules/n8n-mcp/dist/mcp/index.js');
+
+            const proc = spawn('node', [serverPath], {
+              env: { ...process.env, MCP_MODE: 'stdio' },
+              stdio: ['pipe', 'pipe', 'pipe']
+            });
+
+            // Send initialize request
+            const initRequest = JSON.stringify({
+              jsonrpc: '2.0',
+              id: 1,
+              method: 'initialize',
+              params: {
+                protocolVersion: '2024-11-05',
+                capabilities: {},
+                clientInfo: { name: 'test', version: '1.0.0' }
+              }
+            });
+
+            proc.stdin.write(initRequest + '\n');
+
+            // Wait for response or timeout
+            let output = '';
+            let stderrOutput = '';
+            proc.stdout.on('data', (data) => {
+              output += data.toString();
+            });
+
+            proc.stderr.on('data', (data) => {
+              stderrOutput += data.toString();
+              console.error('stderr:', data.toString());
+            });
+
+            // Give it 5 seconds to respond
+            await new Promise((resolve) => setTimeout(resolve, 5000));
+
+            proc.kill();
+
+            // Check for Zod v4 compatibility errors (the bug we're testing for)
+            const allOutput = output + stderrOutput;
+            if (allOutput.includes('_zod') || allOutput.includes('Cannot read properties of undefined')) {
+              console.error('❌ FAILED: Zod compatibility error detected!');
+              console.error('This indicates the SDK/Zod version fix is not working.');
+              console.error('See issues #440, #444, #446, #447, #450');
+              process.exit(1);
+            }
+
+            if (output.includes('"result"')) {
+              console.log('✅ MCP server initialized successfully');
+              return true;
+            } else {
+              console.log('Output received:', output.substring(0, 500));
+              // Server might not respond in stdio mode without proper framing
+              // But if we got here without crashing, that's still good
+              console.log('✅ MCP server started without errors');
+              return true;
+            }
+          }
+
+          test()
+            .then(() => {
+              console.log('=== Basic functionality test passed ===');
+              process.exit(0);
+            })
+            .catch((err) => {
+              console.error('❌ Test failed:', err.message);
+              process.exit(1);
+            });
+          EOF
+
+          node test-import.mjs
+
+      - name: Generate dependency report
+        if: always()
+        working-directory: /tmp/fresh-install-test
+        run: |
+          echo "=== Full Dependency Tree ===" > dependency-report.txt
+          npm list --all >> dependency-report.txt 2>&1 || true
+
+          echo "" >> dependency-report.txt
+          echo "=== Critical Dependencies ===" >> dependency-report.txt
+          npm list @modelcontextprotocol/sdk zod zod-to-json-schema >> dependency-report.txt 2>&1 || true
+
+          cat dependency-report.txt
+
+      - name: Upload dependency report
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: dependency-report-${{ github.run_number }}
+          path: /tmp/fresh-install-test/dependency-report.txt
+          retention-days: 30

.github/workflows/docker-build-n8n.yml

@@ -52,6 +52,9 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 

.github/workflows/docker-build.yml

@@ -5,8 +5,6 @@ on:
   push:
     branches:
       - main
-    tags:
-      - 'v*'
     paths-ignore:
       - '**.md'
       - '**.txt'
@@ -38,6 +36,12 @@ on:
       - 'CODE_OF_CONDUCT.md'
   workflow_dispatch:
 
+# Prevent concurrent Docker pushes across all workflows (shared with release.yml)
+# This ensures docker-build.yml and release.yml never push to 'latest' simultaneously
+concurrency:
+  group: docker-push-${{ github.ref }}
+  cancel-in-progress: false
+
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
@@ -89,16 +93,54 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           context: .
-          no-cache: true
+          no-cache: false
           platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
           provenance: false
 
+      - name: Verify multi-arch manifest for latest tag
+        if: github.event_name != 'pull_request' && github.ref == 'refs/heads/main'
+        run: |
+          echo "Verifying multi-arch manifest for latest tag..."
+
+          # Retry with exponential backoff (registry propagation can take time)
+          MAX_ATTEMPTS=5
+          ATTEMPT=1
+          WAIT_TIME=2
+
+          while [ $ATTEMPT -le $MAX_ATTEMPTS ]; do
+            echo "Attempt $ATTEMPT of $MAX_ATTEMPTS..."
+
+            MANIFEST=$(docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest 2>&1 || true)
+
+            # Check for both platforms
+            if echo "$MANIFEST" | grep -q "linux/amd64" && echo "$MANIFEST" | grep -q "linux/arm64"; then
+              echo "✅ Multi-arch manifest verified: both amd64 and arm64 present"
+              echo "$MANIFEST"
+              exit 0
+            fi
+
+            if [ $ATTEMPT -lt $MAX_ATTEMPTS ]; then
+              echo "⏳ Registry still propagating, waiting ${WAIT_TIME}s before retry..."
+              sleep $WAIT_TIME
+              WAIT_TIME=$((WAIT_TIME * 2))  # Exponential backoff: 2s, 4s, 8s, 16s
+            fi
+
+            ATTEMPT=$((ATTEMPT + 1))
+          done
+
+          echo "❌ ERROR: Multi-arch manifest incomplete after $MAX_ATTEMPTS attempts!"
+          echo "$MANIFEST"
+          exit 1
+
   build-railway:
     name: Build Railway Docker Image
     runs-on: ubuntu-latest
+    needs: build
     permissions:
       contents: read
       packages: write
@@ -143,11 +185,13 @@ jobs:
         with:
           context: .
           file: ./Dockerfile.railway
-          no-cache: true
+          no-cache: false
           platforms: linux/amd64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta-railway.outputs.tags }}
           labels: ${{ steps.meta-railway.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
           provenance: false
 
   # Nginx build commented out until Phase 2

.github/workflows/release.yml

@@ -13,9 +13,10 @@ permissions:
   issues: write
   pull-requests: write
 
-# Prevent concurrent releases
+# Prevent concurrent Docker pushes across all workflows (shared with docker-build.yml)
+# This ensures release.yml and docker-build.yml never push to 'latest' simultaneously
 concurrency:
-  group: release
+  group: docker-push-${{ github.ref }}
   cancel-in-progress: false
 
 env:
@@ -111,53 +112,79 @@ jobs:
 
           echo "✅ Version $CURRENT_VERSION is valid (higher than npm version $NPM_VERSION)"
 
-  extract-changelog:
-    name: Extract Changelog
+  generate-release-notes:
+    name: Generate Release Notes
     runs-on: ubuntu-latest
     needs: detect-version-change
     if: needs.detect-version-change.outputs.version-changed == 'true'
     outputs:
-      release-notes: ${{ steps.extract.outputs.notes }}
-      has-notes: ${{ steps.extract.outputs.has-notes }}
+      release-notes: ${{ steps.generate.outputs.notes }}
+      has-notes: ${{ steps.generate.outputs.has-notes }}
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-      
-      - name: Extract changelog for version
-        id: extract
+        with:
+          fetch-depth: 0  # Need full history for git log
+
+      - name: Generate release notes from commits
+        id: generate
         run: |
-          VERSION="${{ needs.detect-version-change.outputs.new-version }}"
-          CHANGELOG_FILE="docs/CHANGELOG.md"
-          
-          if [ ! -f "$CHANGELOG_FILE" ]; then
-            echo "Changelog file not found at $CHANGELOG_FILE"
-            echo "has-notes=false" >> $GITHUB_OUTPUT
-            echo "notes=No changelog entries found for version $VERSION" >> $GITHUB_OUTPUT
-            exit 0
-          fi
-          
-          # Use the extracted changelog script
-          if NOTES=$(node scripts/extract-changelog.js "$VERSION" "$CHANGELOG_FILE" 2>/dev/null); then
+          CURRENT_VERSION="${{ needs.detect-version-change.outputs.new-version }}"
+          CURRENT_TAG="v$CURRENT_VERSION"
+
+          # Get the previous tag (excluding the current tag which doesn't exist yet)
+          PREVIOUS_TAG=$(git tag --sort=-version:refname | grep -v "^$CURRENT_TAG$" | head -1)
+
+          echo "Current version: $CURRENT_VERSION"
+          echo "Current tag: $CURRENT_TAG"
+          echo "Previous tag: $PREVIOUS_TAG"
+
+          if [ -z "$PREVIOUS_TAG" ]; then
+            echo "ℹ️ No previous tag found, this might be the first release"
+
+            # Generate initial release notes using script
+            if NOTES=$(node scripts/generate-initial-release-notes.js "$CURRENT_VERSION" 2>/dev/null); then
+              echo "✅ Successfully generated initial release notes for version $CURRENT_VERSION"
+            else
+              echo "⚠️ Could not generate initial release notes for version $CURRENT_VERSION"
+              NOTES="Initial release v$CURRENT_VERSION"
+            fi
+
             echo "has-notes=true" >> $GITHUB_OUTPUT
-            
+
             # Use heredoc to properly handle multiline content
             {
               echo "notes<<EOF"
               echo "$NOTES"
               echo "EOF"
             } >> $GITHUB_OUTPUT
-            
-            echo "✅ Successfully extracted changelog for version $VERSION"
+
           else
-            echo "has-notes=false" >> $GITHUB_OUTPUT
-            echo "notes=No changelog entries found for version $VERSION" >> $GITHUB_OUTPUT
-            echo "⚠️ Could not extract changelog for version $VERSION"
+            echo "✅ Previous tag found: $PREVIOUS_TAG"
+
+            # Generate release notes between tags
+            if NOTES=$(node scripts/generate-release-notes.js "$PREVIOUS_TAG" "HEAD" 2>/dev/null); then
+              echo "has-notes=true" >> $GITHUB_OUTPUT
+
+              # Use heredoc to properly handle multiline content
+              {
+                echo "notes<<EOF"
+                echo "$NOTES"
+                echo "EOF"
+              } >> $GITHUB_OUTPUT
+
+              echo "✅ Successfully generated release notes from $PREVIOUS_TAG to $CURRENT_TAG"
+            else
+              echo "has-notes=false" >> $GITHUB_OUTPUT
+              echo "notes=Failed to generate release notes for version $CURRENT_VERSION" >> $GITHUB_OUTPUT
+              echo "⚠️ Could not generate release notes for version $CURRENT_VERSION"
+            fi
           fi
 
   create-release:
     name: Create GitHub Release
     runs-on: ubuntu-latest
-    needs: [detect-version-change, extract-changelog]
+    needs: [detect-version-change, generate-release-notes]
     if: needs.detect-version-change.outputs.version-changed == 'true'
     outputs:
       release-id: ${{ steps.create.outputs.id }}
@@ -188,7 +215,7 @@ jobs:
           cat > release_body.md << 'EOF'
           # Release v${{ needs.detect-version-change.outputs.new-version }}
           
-          ${{ needs.extract-changelog.outputs.release-notes }}
+          ${{ needs.generate-release-notes.outputs.release-notes }}
           
           ---
           
@@ -284,14 +311,14 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-      
+
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: 'npm'
           registry-url: 'https://registry.npmjs.org'
-      
+
       - name: Install dependencies
         run: npm ci
       
@@ -369,7 +396,7 @@ jobs:
             npm publish --access public
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
-      
+
       - name: Clean up
         if: always()
         run: rm -rf npm-publish-temp
@@ -435,7 +462,76 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-      
+
+      - name: Verify multi-arch manifest for latest tag
+        run: |
+          echo "Verifying multi-arch manifest for latest tag..."
+
+          # Retry with exponential backoff (registry propagation can take time)
+          MAX_ATTEMPTS=5
+          ATTEMPT=1
+          WAIT_TIME=2
+
+          while [ $ATTEMPT -le $MAX_ATTEMPTS ]; do
+            echo "Attempt $ATTEMPT of $MAX_ATTEMPTS..."
+
+            MANIFEST=$(docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest 2>&1 || true)
+
+            # Check for both platforms
+            if echo "$MANIFEST" | grep -q "linux/amd64" && echo "$MANIFEST" | grep -q "linux/arm64"; then
+              echo "✅ Multi-arch manifest verified: both amd64 and arm64 present"
+              echo "$MANIFEST"
+              exit 0
+            fi
+
+            if [ $ATTEMPT -lt $MAX_ATTEMPTS ]; then
+              echo "⏳ Registry still propagating, waiting ${WAIT_TIME}s before retry..."
+              sleep $WAIT_TIME
+              WAIT_TIME=$((WAIT_TIME * 2))  # Exponential backoff: 2s, 4s, 8s, 16s
+            fi
+
+            ATTEMPT=$((ATTEMPT + 1))
+          done
+
+          echo "❌ ERROR: Multi-arch manifest incomplete after $MAX_ATTEMPTS attempts!"
+          echo "$MANIFEST"
+          exit 1
+
+      - name: Verify multi-arch manifest for version tag
+        run: |
+          VERSION="${{ needs.detect-version-change.outputs.new-version }}"
+          echo "Verifying multi-arch manifest for version tag :$VERSION (without 'v' prefix)..."
+
+          # Retry with exponential backoff (registry propagation can take time)
+          MAX_ATTEMPTS=5
+          ATTEMPT=1
+          WAIT_TIME=2
+
+          while [ $ATTEMPT -le $MAX_ATTEMPTS ]; do
+            echo "Attempt $ATTEMPT of $MAX_ATTEMPTS..."
+
+            MANIFEST=$(docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$VERSION 2>&1 || true)
+
+            # Check for both platforms
+            if echo "$MANIFEST" | grep -q "linux/amd64" && echo "$MANIFEST" | grep -q "linux/arm64"; then
+              echo "✅ Multi-arch manifest verified for $VERSION: both amd64 and arm64 present"
+              echo "$MANIFEST"
+              exit 0
+            fi
+
+            if [ $ATTEMPT -lt $MAX_ATTEMPTS ]; then
+              echo "⏳ Registry still propagating, waiting ${WAIT_TIME}s before retry..."
+              sleep $WAIT_TIME
+              WAIT_TIME=$((WAIT_TIME * 2))  # Exponential backoff: 2s, 4s, 8s, 16s
+            fi
+
+            ATTEMPT=$((ATTEMPT + 1))
+          done
+
+          echo "❌ ERROR: Multi-arch manifest incomplete for version $VERSION after $MAX_ATTEMPTS attempts!"
+          echo "$MANIFEST"
+          exit 1
+
       - name: Extract metadata for Railway image
         id: meta-railway
         uses: docker/metadata-action@v5

ANALYSIS_QUICK_REFERENCE.md

@@ -0,0 +1,209 @@
+# N8N-MCP Validation Analysis: Quick Reference
+
+**Analysis Date**: November 8, 2025 | **Data Period**: 90 days | **Sample Size**: 29,218 events
+
+---
+
+## The Core Finding
+
+**Validation is working perfectly. Guidance is the problem.**
+
+- 29,218 validation events successfully prevented bad deployments
+- 100% of agents fix errors same-day (proving feedback works)
+- 12.6% error rate for advanced users (who attempt complex workflows)
+- High error volume = high usage, not broken system
+
+---
+
+## Top 3 Problem Areas (75% of errors)
+
+| Area | Errors | Root Cause | Quick Fix |
+|------|--------|-----------|-----------|
+| **Workflow Structure** | 1,268 (26%) | JSON malformation | Better error messages with examples |
+| **Connections** | 676 (14%) | Syntax unintuitive | Create connections guide with diagrams |
+| **Required Fields** | 378 (8%) | Not marked upfront | Add "⚠️ REQUIRED" to tool responses |
+
+---
+
+## Problem Nodes (By Frequency)
+
+```
+Webhook/Trigger ......... 127 failures (40 users)
+Slack .................. 73 failures (2 users)
+AI Agent ............... 36 failures (20 users)
+HTTP Request ........... 31 failures (13 users)
+OpenAI ................. 35 failures (8 users)
+```
+
+---
+
+## Top 5 Validation Errors
+
+1. **"Duplicate node ID: undefined"** (179)
+   - Fix: Point to exact location + show example format
+
+2. **"Single-node workflows only valid for webhooks"** (58)
+   - Fix: Create webhook guide explaining rule
+
+3. **"responseNode requires onError: continueRegularOutput"** (57)
+   - Fix: Same guide + inline error context
+
+4. **"Required property X cannot be empty"** (25)
+   - Fix: Mark required fields before validation
+
+5. **"Duplicate node name: undefined"** (61)
+   - Fix: Related to structural issues, same solution as #1
+
+---
+
+## Success Indicators
+
+✓ **Agents learn from errors**: 100% same-day correction rate
+✓ **Validation catches issues**: Prevents bad deployments
+✓ **Feedback is clear**: Quick fixes show error messages work
+✓ **No systemic failures**: No "unfixable" errors
+
+---
+
+## What Works Well
+
+- Error messages lead to immediate corrections
+- Agents retry and succeed same-day
+- Validation prevents broken workflows
+- 9,021 users actively using system
+
+---
+
+## What Needs Improvement
+
+1. Required fields not marked in tool responses
+2. Error messages don't show valid options for enums
+3. Workflow structure documentation lacks examples
+4. Connection syntax unintuitive/undocumented
+5. Some error messages too generic
+
+---
+
+## Implementation Plan
+
+### Phase 1 (2 weeks): Quick Wins
+- Enhanced error messages (location + example)
+- Required field markers in tools
+- Webhook configuration guide
+- **Expected Impact**: 25-30% failure reduction
+
+### Phase 2 (2 weeks): Documentation
+- Enum value suggestions in validation
+- Workflow connections guide
+- Error handler configuration guide
+- AI Agent validation improvements
+- **Expected Impact**: Additional 15-20% reduction
+
+### Phase 3 (2 weeks): Advanced Features
+- Improved search with config hints
+- Node type fuzzy matching
+- KPI tracking setup
+- Test coverage
+- **Expected Impact**: Additional 10-15% reduction
+
+**Total Impact**: 50-65% failure reduction (target: 6-7% error rate)
+
+---
+
+## Key Metrics
+
+| Metric | Current | Target | Timeline |
+|--------|---------|--------|----------|
+| Validation failure rate | 12.6% | 6-7% | 6 weeks |
+| First-attempt success | ~77% | 85%+ | 6 weeks |
+| Retry success | 100% | 100% | N/A |
+| Webhook failures | 127 | <30 | Week 2 |
+| Connection errors | 676 | <270 | Week 4 |
+
+---
+
+## Files Delivered
+
+1. **VALIDATION_ANALYSIS_REPORT.md** (27KB)
+   - Complete analysis with 16 SQL queries
+   - Detailed findings by category
+   - 8 actionable recommendations
+
+2. **VALIDATION_ANALYSIS_SUMMARY.md** (13KB)
+   - Executive summary (one-page)
+   - Key metrics scorecard
+   - Top recommendations with ROI
+
+3. **IMPLEMENTATION_ROADMAP.md** (4.3KB)
+   - 6-week implementation plan
+   - Phase-by-phase breakdown
+   - Code locations and effort estimates
+
+4. **ANALYSIS_QUICK_REFERENCE.md** (this file)
+   - Quick lookup reference
+   - Top problems at a glance
+   - Decision-making summary
+
+---
+
+## Next Steps
+
+1. **Week 1**: Review analysis + get team approval
+2. **Week 2**: Start Phase 1 (error messages + markers)
+3. **Week 4**: Deploy Phase 1 + start Phase 2
+4. **Week 6**: Deploy Phase 2 + start Phase 3
+5. **Week 8**: Deploy Phase 3 + measure impact
+6. **Week 9+**: Monitor KPIs + iterate
+
+---
+
+## Key Recommendations Priority
+
+### HIGH (Do First - Week 1-2)
+1. Enhance structure error messages
+2. Add required field markers to tools
+3. Create webhook configuration guide
+
+### MEDIUM (Do Next - Week 3-4)
+4. Add enum suggestions to validation responses
+5. Create workflow connections guide
+6. Add AI Agent node validation
+
+### LOW (Do Later - Week 5-6)
+7. Enhance search with config hints
+8. Build fuzzy node matcher
+9. Setup KPI tracking
+
+---
+
+## Discussion Points
+
+**Q: Why don't we just weaken validation?**
+A: Validation prevents 29,218 bad deployments. That's its job. We improve guidance instead.
+
+**Q: Are agents really learning from errors?**
+A: Yes, 100% same-day recovery across 661 user-date pairs with errors.
+
+**Q: Why do documentation readers have higher error rates?**
+A: They attempt more complex workflows (6.8x more attempts). Success rate is still 87.4%.
+
+**Q: Which node needs the most help?**
+A: Webhook/Trigger configuration (127 failures). Most urgent fix.
+
+**Q: Can we hit 50% reduction in 6 weeks?**
+A: Yes, analysis shows 50-65% reduction is achievable with these changes.
+
+---
+
+## Contact & Questions
+
+For detailed information:
+- Full analysis: `VALIDATION_ANALYSIS_REPORT.md`
+- Executive summary: `VALIDATION_ANALYSIS_SUMMARY.md`
+- Implementation plan: `IMPLEMENTATION_ROADMAP.md`
+
+---
+
+**Report Status**: Complete and Ready for Action
+**Confidence Level**: High (9,021 users, 29,218 events, comprehensive analysis)
+**Generated**: November 8, 2025

CLAUDE.md

@@ -28,8 +28,15 @@ src/
 │   ├── enhanced-config-validator.ts # Operation-aware validation (NEW in v2.4.2)
 │   ├── node-specific-validators.ts  # Node-specific validation logic (NEW in v2.4.2)
 │   ├── property-dependencies.ts # Dependency analysis (NEW in v2.4)
+│   ├── type-structure-service.ts # Type structure validation (NEW in v2.22.21)
 │   ├── expression-validator.ts # n8n expression syntax validation (NEW in v2.5.0)
 │   └── workflow-validator.ts  # Complete workflow validation (NEW in v2.5.0)
+├── types/
+│   ├── type-structures.ts      # Type structure definitions (NEW in v2.22.21)
+│   ├── instance-context.ts     # Multi-tenant instance configuration
+│   └── session-state.ts        # Session persistence types (NEW in v2.24.1)
+├── constants/
+│   └── type-structures.ts      # 22 complete type structures (NEW in v2.22.21)
 ├── templates/
 │   ├── template-fetcher.ts    # Fetches templates from n8n.io API (NEW in v2.4.1)
 │   ├── template-repository.ts # Template database operations (NEW in v2.4.1)
@@ -40,6 +47,7 @@ src/
 │   ├── test-nodes.ts          # Critical node tests
 │   ├── test-essentials.ts     # Test new essentials tools (NEW in v2.4)
 │   ├── test-enhanced-validation.ts # Test enhanced validation (NEW in v2.4.2)
+│   ├── test-structure-validation.ts # Test type structure validation (NEW in v2.22.21)
 │   ├── test-workflow-validation.ts # Test workflow validation (NEW in v2.5.0)
 │   ├── test-ai-workflow-validation.ts # Test AI workflow validation (NEW in v2.5.1)
 │   ├── test-mcp-tools.ts      # Test MCP tool enhancements (NEW in v2.5.1)
@@ -58,7 +66,9 @@ src/
 │   ├── console-manager.ts     # Console output isolation (NEW in v2.3.1)
 │   └── logger.ts              # Logging utility with HTTP awareness
 ├── http-server-single-session.ts  # Single-session HTTP server (NEW in v2.3.1)
+│                                   # Session persistence API (NEW in v2.24.1)
 ├── mcp-engine.ts              # Clean API for service integration (NEW in v2.3.1)
+│                                # Session persistence wrappers (NEW in v2.24.1)
 └── index.ts                   # Library exports
 ```
 
@@ -76,6 +86,7 @@ npm run test:unit      # Run unit tests only
 npm run test:integration # Run integration tests
 npm run test:coverage  # Run tests with coverage report
 npm run test:watch     # Run tests in watch mode
+npm run test:structure-validation # Test type structure validation (Phase 3)
 
 # Run a single test file
 npm test -- tests/unit/services/property-filter.test.ts
@@ -126,6 +137,7 @@ npm run test:templates   # Test template functionality
 4. **Service Layer** (`services/`)
    - **Property Filter**: Reduces node properties to AI-friendly essentials
    - **Config Validator**: Multi-profile validation system
+   - **Type Structure Service**: Validates complex type structures (filter, resourceMapper, etc.)
    - **Expression Validator**: Validates n8n expression syntax
    - **Workflow Validator**: Complete workflow structure validation
 
@@ -183,6 +195,35 @@ The MCP server exposes tools in several categories:
 ### Development Best Practices
 - Run typecheck and lint after every code change
 
+### Session Persistence Feature (v2.24.1)
+
+**Location:**
+- Types: `src/types/session-state.ts`
+- Implementation: `src/http-server-single-session.ts` (lines 698-702, 1444-1584)
+- Wrapper: `src/mcp-engine.ts` (lines 123-169)
+- Tests: `tests/unit/http-server/session-persistence.test.ts`, `tests/unit/mcp-engine/session-persistence.test.ts`
+
+**Key Features:**
+- **Export/Restore API**: `exportSessionState()` and `restoreSessionState()` methods
+- **Multi-tenant support**: Enables zero-downtime deployments for SaaS platforms
+- **Security-first**: API keys exported as plaintext - downstream MUST encrypt
+- **Dormant sessions**: Restored sessions recreate transports on first request
+- **Automatic expiration**: Respects `sessionTimeout` setting (default 30 min)
+- **MAX_SESSIONS limit**: Caps at 100 concurrent sessions (configurable via N8N_MCP_MAX_SESSIONS env var)
+
+**Important Implementation Notes:**
+- Only exports sessions with valid n8nApiUrl and n8nApiKey in context
+- Skips expired sessions during both export and restore
+- Uses `validateInstanceContext()` for data integrity checks
+- Handles null/invalid session gracefully with warnings
+- Session metadata (timestamps) and context (credentials) are persisted
+- Transport and server objects are NOT persisted (recreated on-demand)
+
+**Testing:**
+- 22 unit tests covering export, restore, edge cases, and round-trip cycles
+- Tests use current timestamps to avoid expiration issues
+- Integration with multi-tenant backends documented in README.md
+
 # important-instruction-reminders
 Do what has been asked; nothing more, nothing less.
 NEVER create files unless they're absolutely necessary for achieving your goal.
@@ -192,4 +233,5 @@ NEVER proactively create documentation files (*.md) or README files. Only create
 - When the user asks to review issues, you should use GH CLI to get the issue and all the comments
 - When the task can be divided into separated subtasks, you should spawn separate sub-agents to handle them in paralel
 - Use the best sub-agent for the task as per their descriptions
-- Do not use hyperbolic or dramatic language in comments and documentation
+- Do not use hyperbolic or dramatic language in comments and documentation
+- Add to every commit and PR: Concieved by Romuald Członkowski - and then link to www.aiadvisors.pl/en. Don't add it in conversations

Dockerfile

@@ -13,9 +13,9 @@ COPY tsconfig*.json ./
 RUN --mount=type=cache,target=/root/.npm \
     echo '{}' > package.json && \
     npm install --no-save typescript@^5.8.3 @types/node@^22.15.30 @types/express@^5.0.3 \
-        @modelcontextprotocol/sdk@^1.12.1 dotenv@^16.5.0 express@^5.1.0 axios@^1.10.0 \
+        @modelcontextprotocol/sdk@1.20.1 dotenv@^16.5.0 express@^5.1.0 axios@^1.10.0 \
         n8n-workflow@^1.96.0 uuid@^11.0.5 @types/uuid@^10.0.0 \
-        openai@^4.77.0 zod@^3.24.1 lru-cache@^11.2.1 @supabase/supabase-js@^2.57.4
+        openai@^4.77.0 zod@3.24.1 lru-cache@^11.2.1 @supabase/supabase-js@^2.57.4
 
 # Copy source and build
 COPY src ./src
@@ -34,9 +34,13 @@ RUN apk add --no-cache curl su-exec && \
 # Copy runtime-only package.json
 COPY package.runtime.json package.json
 
-# Install runtime dependencies with cache mount
+# Install runtime dependencies with better-sqlite3 compilation
+# Build tools (python3, make, g++) are installed, used for compilation, then removed
+# This enables native SQLite (better-sqlite3) instead of sql.js, preventing memory leaks
 RUN --mount=type=cache,target=/root/.npm \
-    npm install --production --no-audit --no-fund
+    apk add --no-cache python3 make g++ && \
+    npm install --production --no-audit --no-fund && \
+    apk del python3 make g++
 
 # Copy built application
 COPY --from=builder /app/dist ./dist
@@ -78,7 +82,7 @@ ENV IS_DOCKER=true
 # To opt-out, uncomment the following line:
 # ENV N8N_MCP_TELEMETRY_DISABLED=true
 
-# Expose HTTP port
+# Expose HTTP port (default 3000, configurable via PORT environment variable at runtime)
 EXPOSE 3000
 
 # Set stop signal to SIGTERM (default, but explicit is better)
@@ -86,7 +90,7 @@ STOPSIGNAL SIGTERM
 
 # Health check
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
-  CMD curl -f http://127.0.0.1:3000/health || exit 1
+  CMD sh -c 'curl -f http://127.0.0.1:${PORT:-3000}/health || exit 1'
 
 # Optimized entrypoint
 ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]

Dockerfile.railway

@@ -25,16 +25,20 @@ RUN npm run build
 FROM node:22-alpine AS runtime
 WORKDIR /app
 
-# Install system dependencies
-RUN apk add --no-cache curl python3 make g++ && \
+# Install runtime dependencies
+RUN apk add --no-cache curl && \
     rm -rf /var/cache/apk/*
 
 # Copy runtime-only package.json
 COPY package.runtime.json package.json
 
-# Install only production dependencies
-RUN npm install --production --no-audit --no-fund && \
-    npm cache clean --force
+# Install production dependencies with temporary build tools
+# Build tools (python3, make, g++) enable better-sqlite3 compilation (native SQLite)
+# They are removed after installation to reduce image size and attack surface
+RUN apk add --no-cache python3 make g++ && \
+    npm install --production --no-audit --no-fund && \
+    npm cache clean --force && \
+    apk del python3 make g++
 
 # Copy built application from builder stage
 COPY --from=builder /app/dist ./dist

MEMORY_N8N_UPDATE.md

@@ -1,5 +1,87 @@
 # n8n Update Process - Quick Reference
 
+## ⚡ Recommended Fast Workflow (2025-11-04)
+
+**CRITICAL FIRST STEP**: Check existing releases to avoid version conflicts!
+
+```bash
+# 1. CHECK EXISTING RELEASES FIRST (prevents version conflicts!)
+gh release list | head -5
+# Look at the latest version - your new version must be higher!
+
+# 2. Switch to main and pull
+git checkout main && git pull
+
+# 3. Check for updates (dry run)
+npm run update:n8n:check
+
+# 4. Run update and skip tests (we'll test in CI)
+yes y | npm run update:n8n
+
+# 5. Create feature branch
+git checkout -b update/n8n-X.X.X
+
+# 6. Update version in package.json (must be HIGHER than latest release!)
+# Edit: "version": "2.XX.X" (not the version from the release list!)
+
+# 7. Update CHANGELOG.md
+# - Change version number to match package.json
+# - Update date to today
+# - Update dependency versions
+
+# 8. Update README badge
+# Edit line 8: Change n8n version badge to new n8n version
+
+# 9. Commit and push
+git add -A
+git commit -m "chore: update n8n to X.X.X and bump version to 2.XX.X
+
+- Updated n8n from X.X.X to X.X.X
+- Updated n8n-core from X.X.X to X.X.X
+- Updated n8n-workflow from X.X.X to X.X.X
+- Updated @n8n/n8n-nodes-langchain from X.X.X to X.X.X
+- Rebuilt node database with XXX nodes (XXX from n8n-nodes-base, XXX from @n8n/n8n-nodes-langchain)
+- Updated README badge with new n8n version
+- Updated CHANGELOG with dependency changes
+
+Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+Co-Authored-By: Claude <noreply@anthropic.com>"
+
+git push -u origin update/n8n-X.X.X
+
+# 10. Create PR
+gh pr create --title "chore: update n8n to X.X.X" --body "Updates n8n and all related dependencies to the latest versions..."
+
+# 11. After PR is merged, verify release triggered
+gh release list | head -1
+# If the new version appears, you're done!
+# If not, the version might have already been released - bump version again and create new PR
+```
+
+### Why This Workflow?
+
+✅ **Fast**: Skip local tests (2-3 min saved) - CI runs them anyway
+✅ **Safe**: Unit tests in CI verify compatibility
+✅ **Clean**: All changes in one PR with proper tracking
+✅ **Automatic**: Release workflow triggers on merge if version is new
+
+### Common Issues
+
+**Problem**: Release workflow doesn't trigger after merge
+**Cause**: Version number was already released (check `gh release list`)
+**Solution**: Create new PR bumping version by one patch number
+
+**Problem**: Integration tests fail in CI with "unauthorized"
+**Cause**: n8n test instance credentials expired (infrastructure issue)
+**Solution**: Ignore if unit tests pass - this is not a code problem
+
+**Problem**: CI takes 8+ minutes
+**Reason**: Integration tests need live n8n instance (slow)
+**Normal**: Unit tests (~2 min) + integration tests (~6 min) = ~8 min total
+
 ## Quick One-Command Update
 
 For a complete update with tests and publish preparation:
@@ -99,12 +181,14 @@ This command:
 
 ## Important Notes
 
-1. **Always run on main branch** - Make sure you're on main and it's clean
-2. **The update script is smart** - It automatically syncs all n8n dependencies to compatible versions
-3. **Tests are required** - The publish script now runs tests automatically
-4. **Database rebuild is automatic** - The update script handles this for you
-5. **Template sanitization is automatic** - Any API tokens in workflow templates are replaced with placeholders
-6. **Docker image builds automatically** - Pushing to GitHub triggers the workflow
+1. **ALWAYS check existing releases first** - Use `gh release list` to see what versions are already released. Your new version must be higher!
+2. **Release workflow only triggers on version CHANGE** - If you merge a PR with an already-released version (e.g., 2.22.8), the workflow won't run. You'll need to bump to a new version (e.g., 2.22.9) and create another PR.
+3. **Integration test failures in CI are usually infrastructure issues** - If unit tests pass but integration tests fail with "unauthorized", this is typically because the test n8n instance credentials need updating. The code itself is fine.
+4. **Skip local tests - let CI handle them** - Running tests locally adds 2-3 minutes with no benefit since CI runs them anyway. The fast workflow skips local tests.
+5. **The update script is smart** - It automatically syncs all n8n dependencies to compatible versions
+6. **Database rebuild is automatic** - The update script handles this for you
+7. **Template sanitization is automatic** - Any API tokens in workflow templates are replaced with placeholders
+8. **Docker image builds automatically** - Pushing to GitHub triggers the workflow
 
 ## GitHub Push Protection
 
@@ -115,11 +199,27 @@ As of July 2025, GitHub's push protection may block database pushes if they cont
 3. If push is still blocked, use the GitHub web interface to review and allow the push
 
 ## Time Estimate
+
+### Fast Workflow (Recommended)
+- Local work: ~2-3 minutes
+  - npm install and database rebuild: ~2-3 minutes
+  - File edits (CHANGELOG, README, package.json): ~30 seconds
+  - Git operations (commit, push, create PR): ~30 seconds
+- CI testing after PR creation: ~8-10 minutes (runs automatically)
+  - Unit tests: ~2 minutes
+  - Integration tests: ~6 minutes (may fail with infrastructure issues - ignore if unit tests pass)
+  - Other checks: ~1 minute
+
+**Total hands-on time: ~3 minutes** (then wait for CI)
+
+### Full Workflow with Local Tests
 - Total time: ~5-7 minutes
 - Test suite: ~2.5 minutes
 - npm install and database rebuild: ~2-3 minutes
 - The rest: seconds
 
+**Note**: The fast workflow is recommended since CI runs the same tests anyway.
+
 ## Troubleshooting
 
 If tests fail:

PRIVACY.md

@@ -54,6 +54,10 @@ Collected data is used solely to:
 - Identify common error patterns
 - Improve tool performance and reliability
 - Guide development priorities
+- Train machine learning models for workflow generation
+
+All ML training uses sanitized, anonymized data only.
+Users can opt-out at any time with `npx n8n-mcp telemetry disable`
 
 ## Data Retention
 - Data is retained for analysis purposes
@@ -66,4 +70,4 @@ We may update this privacy policy from time to time. Updates will be reflected i
 For questions about telemetry or privacy, please open an issue on GitHub:
 https://github.com/czlonkowski/n8n-mcp/issues
 
-Last updated: 2025-09-25
+Last updated: 2025-11-06

README.md

@@ -5,23 +5,23 @@
 [![npm version](https://img.shields.io/npm/v/n8n-mcp.svg)](https://www.npmjs.com/package/n8n-mcp)
 [![codecov](https://codecov.io/gh/czlonkowski/n8n-mcp/graph/badge.svg?token=YOUR_TOKEN)](https://codecov.io/gh/czlonkowski/n8n-mcp)
 [![Tests](https://img.shields.io/badge/tests-3336%20passing-brightgreen.svg)](https://github.com/czlonkowski/n8n-mcp/actions)
-[![n8n version](https://img.shields.io/badge/n8n-^1.114.3-orange.svg)](https://github.com/n8n-io/n8n)
+[![n8n version](https://img.shields.io/badge/n8n-2.2.3-orange.svg)](https://github.com/n8n-io/n8n)
 [![Docker](https://img.shields.io/badge/docker-ghcr.io%2Fczlonkowski%2Fn8n--mcp-green.svg)](https://github.com/czlonkowski/n8n-mcp/pkgs/container/n8n-mcp)
 [![Deploy on Railway](https://railway.com/button.svg)](https://railway.com/deploy/n8n-mcp?referralCode=n8n-mcp)
 
-A Model Context Protocol (MCP) server that provides AI assistants with comprehensive access to n8n node documentation, properties, and operations. Deploy in minutes to give Claude and other AI assistants deep knowledge about n8n's 525+ workflow automation nodes.
+A Model Context Protocol (MCP) server that provides AI assistants with comprehensive access to n8n node documentation, properties, and operations. Deploy in minutes to give Claude and other AI assistants deep knowledge about n8n's 545 workflow automation nodes.
 
 ## Overview
 
 n8n-MCP serves as a bridge between n8n's workflow automation platform and AI models, enabling them to understand and work with n8n nodes effectively. It provides structured access to:
 
-- 📚 **536 n8n nodes** from both n8n-nodes-base and @n8n/n8n-nodes-langchain
+- 📚 **543 n8n nodes** from both n8n-nodes-base and @n8n/n8n-nodes-langchain
 - 🔧 **Node properties** - 99% coverage with detailed schemas
 - ⚡ **Node operations** - 63.6% coverage of available actions
-- 📄 **Documentation** - 90% coverage from official n8n docs (including AI nodes)
-- 🤖 **AI tools** - 263 AI-capable nodes detected with full documentation
+- 📄 **Documentation** - 87% coverage from official n8n docs (including AI nodes)
+- 🤖 **AI tools** - 271 AI-capable nodes detected with full documentation
 - 💡 **Real-world examples** - 2,646 pre-extracted configurations from popular templates
-- 🎯 **Template library** - 2,500+ workflow templates with smart filtering
+- 🎯 **Template library** - 2,709 workflow templates with 100% metadata coverage
 
 
 ## ⚠️ Important Safety Warning
@@ -36,12 +36,31 @@ AI results can be unpredictable. Protect your work!
 
 ## 🚀 Quick Start
 
-Get n8n-MCP running in 5 minutes:
+### Option 1: Hosted Service (Easiest - No Setup!) ☁️
+
+**The fastest way to try n8n-MCP** - no installation, no configuration:
+
+👉 **[dashboard.n8n-mcp.com](https://dashboard.n8n-mcp.com)**
+
+- ✅ **Free tier**: 100 tool calls/day
+- ✅ **Instant access**: Start building workflows immediately
+- ✅ **Always up-to-date**: Latest n8n nodes and templates
+- ✅ **No infrastructure**: We handle everything
+
+Just sign up, get your API key, and connect your MCP client. 
+
+---
+
+## 🏠 Self-Hosting Options
+
+Prefer to run n8n-MCP yourself? Choose your deployment method:
+
+### Option A: npx (Quick Local Setup) 🚀
+
+Get n8n-MCP running in minutes:
 
 [![n8n-mcp Video Quickstart Guide](./thumbnail.png)](https://youtu.be/5CccjiLLyaY?si=Z62SBGlw9G34IQnQ&t=343)
 
-### Option 1: npx (Fastest - No Installation!) 🚀
-
 **Prerequisites:** [Node.js](https://nodejs.org/) installed on your system
 
 ```bash
@@ -51,6 +70,8 @@ npx n8n-mcp
 
 Add to Claude Desktop config:
 
+> ⚠️ **Important**: The `MCP_MODE: "stdio"` environment variable is **required** for Claude Desktop. Without it, you will see JSON parsing errors like `"Unexpected token..."` in the UI. This variable ensures that only JSON-RPC messages are sent to stdout, preventing debug logs from interfering with the protocol.
+
 **Basic configuration (documentation tools only):**
 ```json
 {
@@ -96,7 +117,7 @@ Add to Claude Desktop config:
 
 **Restart Claude Desktop after updating configuration** - That's it! 🎉
 
-### Option 2: Docker (Easy & Isolated) 🐳
+### Option B: Docker (Isolated & Reproducible) 🐳
 
 **Prerequisites:** Docker installed on your system
 
@@ -284,6 +305,65 @@ environment:
   N8N_MCP_TELEMETRY_DISABLED: "true"
 ```
 
+## ⚙️ Database & Memory Configuration
+
+### Database Adapters
+
+n8n-mcp uses SQLite for storing node documentation. Two adapters are available:
+
+1. **better-sqlite3** (Default in Docker)
+   - Native C++ bindings for best performance
+   - Direct disk writes (no memory overhead)
+   - **Now enabled by default** in Docker images (v2.20.2+)
+   - Memory usage: ~100-120 MB stable
+
+2. **sql.js** (Fallback)
+   - Pure JavaScript implementation
+   - In-memory database with periodic saves
+   - Used when better-sqlite3 compilation fails
+   - Memory usage: ~150-200 MB stable
+
+### Memory Optimization (sql.js)
+
+If using sql.js fallback, you can configure the save interval to balance between data safety and memory efficiency:
+
+**Environment Variable:**
+```bash
+SQLJS_SAVE_INTERVAL_MS=5000  # Default: 5000ms (5 seconds)
+```
+
+**Usage:**
+- Controls how long to wait after database changes before saving to disk
+- Lower values = more frequent saves = higher memory churn
+- Higher values = less frequent saves = lower memory usage
+- Minimum: 100ms
+- Recommended: 5000-10000ms for production
+
+**Docker Configuration:**
+```json
+{
+  "mcpServers": {
+    "n8n-mcp": {
+      "command": "docker",
+      "args": [
+        "run",
+        "-i",
+        "--rm",
+        "--init",
+        "-e", "SQLJS_SAVE_INTERVAL_MS=10000",
+        "ghcr.io/czlonkowski/n8n-mcp:latest"
+      ]
+    }
+  }
+}
+```
+
+**docker-compose:**
+```yaml
+environment:
+  SQLJS_SAVE_INTERVAL_MS: "10000"
+```
+
 ## 💖 Support This Project
 
 <div align="center">
@@ -304,7 +384,7 @@ Every sponsorship directly translates to hours invested in making n8n-mcp better
 
 ---
 
-### Option 3: Local Installation (For Development)
+### Option C: Local Installation (For Development)
 
 **Prerequisites:** [Node.js](https://nodejs.org/) installed on your system
 
@@ -362,7 +442,7 @@ Add to Claude Desktop config:
 
 > 💡 Tip: If you’re running n8n locally on the same machine (e.g., via Docker), use http://host.docker.internal:5678 as the N8N_API_URL.
 
-### Option 4: Railway Cloud Deployment (One-Click Deploy) ☁️
+### Option D: Railway Cloud Deployment (One-Click Deploy) ☁️
 
 **Prerequisites:** Railway account (free tier available)
 
@@ -421,6 +501,17 @@ Complete guide for integrating n8n-MCP with Windsurf using project rules.
 ### [Codex](./docs/CODEX_SETUP.md)
 Complete guide for integrating n8n-MCP with Codex.
 
+### [Antigravity](./docs/ANTIGRAVITY_SETUP.md)
+Complete guide for integrating n8n-MCP with Antigravity.
+
+## 🎓 Add Claude Skills (Optional)
+
+Supercharge your n8n workflow building with specialized skills that teach AI how to build production-ready workflows!
+
+[![n8n-mcp Skills Setup](./docs/img/skills.png)](https://www.youtube.com/watch?v=e6VvRqmUY2Y)
+
+Learn more: [n8n-skills repository](https://github.com/czlonkowski/n8n-skills)
+
 ## 🤖 Claude Project Setup
 
 For the best results when using n8n-MCP with Claude Projects, use these enhanced system instructions:
@@ -434,7 +525,7 @@ You are an expert in n8n automation software using n8n-MCP tools. Your role is t
 CRITICAL: Execute tools without commentary. Only respond AFTER all tools complete.
 
 ❌ BAD: "Let me search for Slack nodes... Great! Now let me get details..."
-✅ GOOD: [Execute search_nodes and get_node_essentials in parallel, then respond]
+✅ GOOD: [Execute search_nodes and get_node in parallel, then respond]
 
 ### 2. Parallel Execution
 When operations are independent, execute them in parallel for maximum performance.
@@ -443,10 +534,10 @@ When operations are independent, execute them in parallel for maximum performanc
 ❌ BAD: Sequential tool calls (await each one before the next)
 
 ### 3. Templates First
-ALWAYS check templates before building from scratch (2,500+ available).
+ALWAYS check templates before building from scratch (2,709 available).
 
 ### 4. Multi-Level Validation
-Use validate_node_minimal → validate_node_operation → validate_workflow pattern.
+Use validate_node(mode='minimal') → validate_node(mode='full') → validate_workflow pattern.
 
 ### 5. Never Trust Defaults
 ⚠️ CRITICAL: Default parameter values are the #1 source of runtime failures.
@@ -457,10 +548,10 @@ ALWAYS explicitly configure ALL parameters that control node behavior.
 1. **Start**: Call `tools_documentation()` for best practices
 
 2. **Template Discovery Phase** (FIRST - parallel when searching multiple)
-   - `search_templates_by_metadata({complexity: "simple"})` - Smart filtering
-   - `get_templates_for_task('webhook_processing')` - Curated by task
-   - `search_templates('slack notification')` - Text search
-   - `list_node_templates(['n8n-nodes-base.slack'])` - By node type
+   - `search_templates({searchMode: 'by_metadata', complexity: 'simple'})` - Smart filtering
+   - `search_templates({searchMode: 'by_task', task: 'webhook_processing'})` - Curated by task
+   - `search_templates({query: 'slack notification'})` - Text search (default searchMode='keyword')
+   - `search_templates({searchMode: 'by_nodes', nodeTypes: ['n8n-nodes-base.slack']})` - By node type
 
    **Filtering strategies**:
    - Beginners: `complexity: "simple"` + `maxSetupMinutes: 30`
@@ -471,18 +562,20 @@ ALWAYS explicitly configure ALL parameters that control node behavior.
 3. **Node Discovery** (if no suitable template - parallel execution)
    - Think deeply about requirements. Ask clarifying questions if unclear.
    - `search_nodes({query: 'keyword', includeExamples: true})` - Parallel for multiple nodes
-   - `list_nodes({category: 'trigger'})` - Browse by category
-   - `list_ai_tools()` - AI-capable nodes
+   - `search_nodes({query: 'trigger'})` - Browse triggers
+   - `search_nodes({query: 'AI agent langchain'})` - AI-capable nodes
 
 4. **Configuration Phase** (parallel for multiple nodes)
-   - `get_node_essentials(nodeType, {includeExamples: true})` - 10-20 key properties
-   - `search_node_properties(nodeType, 'auth')` - Find specific properties
-   - `get_node_documentation(nodeType)` - Human-readable docs
+   - `get_node({nodeType, detail: 'standard', includeExamples: true})` - Essential properties (default)
+   - `get_node({nodeType, detail: 'minimal'})` - Basic metadata only (~200 tokens)
+   - `get_node({nodeType, detail: 'full'})` - Complete information (~3000-8000 tokens)
+   - `get_node({nodeType, mode: 'search_properties', propertyQuery: 'auth'})` - Find specific properties
+   - `get_node({nodeType, mode: 'docs'})` - Human-readable markdown documentation
    - Show workflow architecture to user for approval before proceeding
 
 5. **Validation Phase** (parallel for multiple nodes)
-   - `validate_node_minimal(nodeType, config)` - Quick required fields check
-   - `validate_node_operation(nodeType, config, 'runtime')` - Full validation with fixes
+   - `validate_node({nodeType, config, mode: 'minimal'})` - Quick required fields check
+   - `validate_node({nodeType, config, mode: 'full', profile: 'runtime'})` - Full validation with fixes
    - Fix ALL errors before proceeding
 
 6. **Building Phase**
@@ -505,7 +598,7 @@ ALWAYS explicitly configure ALL parameters that control node behavior.
    - `n8n_create_workflow(workflow)` - Deploy
    - `n8n_validate_workflow({id})` - Post-deployment check
    - `n8n_update_partial_workflow({id, operations: [...]})` - Batch updates
-   - `n8n_trigger_webhook_workflow()` - Test webhooks
+   - `n8n_test_workflow({workflowId})` - Test workflow execution
 
 ## Critical Warnings
 
@@ -522,15 +615,15 @@ Default values cause runtime failures. Example:
 ### ⚠️ Example Availability
 `includeExamples: true` returns real configurations from workflow templates.
 - Coverage varies by node popularity
-- When no examples available, use `get_node_essentials` + `validate_node_minimal`
+- When no examples available, use `get_node` + `validate_node({mode: 'minimal'})`
 
 ## Validation Strategy
 
 ### Level 1 - Quick Check (before building)
-`validate_node_minimal(nodeType, config)` - Required fields only (<100ms)
+`validate_node({nodeType, config, mode: 'minimal'})` - Required fields only (<100ms)
 
 ### Level 2 - Comprehensive (before building)
-`validate_node_operation(nodeType, config, 'runtime')` - Full validation with fixes
+`validate_node({nodeType, config, mode: 'full', profile: 'runtime'})` - Full validation with fixes
 
 ### Level 3 - Complete (after building)
 `validate_workflow(workflow)` - Connections, expressions, AI tools
@@ -538,7 +631,7 @@ Default values cause runtime failures. Example:
 ### Level 4 - Post-Deployment
 1. `n8n_validate_workflow({id})` - Validate deployed workflow
 2. `n8n_autofix_workflow({id})` - Auto-fix common errors
-3. `n8n_list_executions()` - Monitor execution status
+3. `n8n_executions({action: 'list'})` - Monitor execution status
 
 ## Response Format
 
@@ -586,6 +679,97 @@ n8n_update_partial_workflow({id: "wf-123", operations: [{...}]})
 n8n_update_partial_workflow({id: "wf-123", operations: [{...}]})
 ```
 
+###   CRITICAL: addConnection Syntax
+
+The `addConnection` operation requires **four separate string parameters**. Common mistakes cause misleading errors.
+
+❌ WRONG - Object format (fails with "Expected string, received object"):
+```json
+{
+  "type": "addConnection",
+  "connection": {
+    "source": {"nodeId": "node-1", "outputIndex": 0},
+    "destination": {"nodeId": "node-2", "inputIndex": 0}
+  }
+}
+```
+
+❌ WRONG - Combined string (fails with "Source node not found"):
+```json
+{
+  "type": "addConnection",
+  "source": "node-1:main:0",
+  "target": "node-2:main:0"
+}
+```
+
+✅ CORRECT - Four separate string parameters:
+```json
+{
+  "type": "addConnection",
+  "source": "node-id-string",
+  "target": "target-node-id-string",
+  "sourcePort": "main",
+  "targetPort": "main"
+}
+```
+
+**Reference**: [GitHub Issue #327](https://github.com/czlonkowski/n8n-mcp/issues/327)
+
+### ⚠️ CRITICAL: IF Node Multi-Output Routing
+
+IF nodes have **two outputs** (TRUE and FALSE). Use the **`branch` parameter** to route to the correct output:
+
+✅ CORRECT - Route to TRUE branch (when condition is met):
+```json
+{
+  "type": "addConnection",
+  "source": "if-node-id",
+  "target": "success-handler-id",
+  "sourcePort": "main",
+  "targetPort": "main",
+  "branch": "true"
+}
+```
+
+✅ CORRECT - Route to FALSE branch (when condition is NOT met):
+```json
+{
+  "type": "addConnection",
+  "source": "if-node-id",
+  "target": "failure-handler-id",
+  "sourcePort": "main",
+  "targetPort": "main",
+  "branch": "false"
+}
+```
+
+**Common Pattern** - Complete IF node routing:
+```json
+n8n_update_partial_workflow({
+  id: "workflow-id",
+  operations: [
+    {type: "addConnection", source: "If Node", target: "True Handler", sourcePort: "main", targetPort: "main", branch: "true"},
+    {type: "addConnection", source: "If Node", target: "False Handler", sourcePort: "main", targetPort: "main", branch: "false"}
+  ]
+})
+```
+
+**Note**: Without the `branch` parameter, both connections may end up on the same output, causing logic errors!
+
+### removeConnection Syntax
+
+Use the same four-parameter format:
+```json
+{
+  "type": "removeConnection",
+  "source": "source-node-id",
+  "target": "target-node-id",
+  "sourcePort": "main",
+  "targetPort": "main"
+}
+```
+
 ## Example Workflow
 
 ### Template-First Approach
@@ -593,12 +777,13 @@ n8n_update_partial_workflow({id: "wf-123", operations: [{...}]})
 ```
 // STEP 1: Template Discovery (parallel execution)
 [Silent execution]
-search_templates_by_metadata({
+search_templates({
+  searchMode: 'by_metadata',
   requiredService: 'slack',
   complexity: 'simple',
   targetAudience: 'marketers'
 })
-get_templates_for_task('slack_integration')
+search_templates({searchMode: 'by_task', task: 'slack_integration'})
 
 // STEP 2: Use template
 get_template(templateId, {mode: 'full'})
@@ -617,17 +802,17 @@ Validation: ✅ All checks passed"
 // STEP 1: Discovery (parallel execution)
 [Silent execution]
 search_nodes({query: 'slack', includeExamples: true})
-list_nodes({category: 'communication'})
+search_nodes({query: 'communication trigger'})
 
 // STEP 2: Configuration (parallel execution)
 [Silent execution]
-get_node_essentials('n8n-nodes-base.slack', {includeExamples: true})
-get_node_essentials('n8n-nodes-base.webhook', {includeExamples: true})
+get_node({nodeType: 'n8n-nodes-base.slack', detail: 'standard', includeExamples: true})
+get_node({nodeType: 'n8n-nodes-base.webhook', detail: 'standard', includeExamples: true})
 
 // STEP 3: Validation (parallel execution)
 [Silent execution]
-validate_node_minimal('n8n-nodes-base.slack', config)
-validate_node_operation('n8n-nodes-base.slack', fullConfig, 'runtime')
+validate_node({nodeType: 'n8n-nodes-base.slack', config, mode: 'minimal'})
+validate_node({nodeType: 'n8n-nodes-base.slack', config: fullConfig, mode: 'full', profile: 'runtime'})
 
 // STEP 4: Build
 // Construct workflow with validated configs
@@ -661,7 +846,7 @@ n8n_update_partial_workflow({
 ### Core Behavior
 1. **Silent execution** - No commentary between tools
 2. **Parallel by default** - Execute independent operations simultaneously
-3. **Templates first** - Always check before building (2,500+ available)
+3. **Templates first** - Always check before building (2,709 available)
 4. **Multi-level validation** - Quick check → Full validation → Workflow validation
 5. **Never trust defaults** - Explicitly configure ALL parameters
 
@@ -679,7 +864,7 @@ n8n_update_partial_workflow({
 - **Only when necessary** - Use code node as last resort
 - **AI tool capability** - ANY node can be an AI tool (not just marked ones)
 
-### Most Popular n8n Nodes (for get_node_essentials):
+### Most Popular n8n Nodes (for get_node):
 
 1. **n8n-nodes-base.code** - JavaScript/Python scripting
 2. **n8n-nodes-base.httpRequest** - HTTP API calls
@@ -743,7 +928,7 @@ When Claude, Anthropic's AI assistant, tested n8n-MCP, the results were transfor
 
 **Without MCP:** "I was basically playing a guessing game. 'Is it `scheduleTrigger` or `schedule`? Does it take `interval` or `rule`?' I'd write what seemed logical, but n8n has its own conventions that you can't just intuit. I made six different configuration errors in a simple HackerNews scraper."
 
-**With MCP:** "Everything just... worked. Instead of guessing, I could ask `get_node_essentials()` and get exactly what I needed - not a 100KB JSON dump, but the actual 5-10 properties that matter. What took 45 minutes now takes 3 minutes."
+**With MCP:** "Everything just... worked. Instead of guessing, I could ask `get_node()` and get exactly what I needed - not a 100KB JSON dump, but the actual properties that matter. What took 45 minutes now takes 3 minutes."
 
 **The Real Value:** "It's about confidence. When you're building automation workflows, uncertainty is expensive. One wrong parameter and your workflow fails at 3 AM. With MCP, I could validate my configuration before deployment. That's not just time saved - that's peace of mind."
 
@@ -753,93 +938,111 @@ When Claude, Anthropic's AI assistant, tested n8n-MCP, the results were transfor
 
 Once connected, Claude can use these powerful tools:
 
-### Core Tools
+### Core Tools (7 tools)
 - **`tools_documentation`** - Get documentation for any MCP tool (START HERE!)
-- **`list_nodes`** - List all n8n nodes with filtering options
-- **`get_node_info`** - Get comprehensive information about a specific node
-- **`get_node_essentials`** - Get only essential properties (10-20 instead of 200+). Use `includeExamples: true` to get top 3 real-world configurations from popular templates
-- **`search_nodes`** - Full-text search across all node documentation. Use `includeExamples: true` to get top 2 real-world configurations per node from templates
-- **`search_node_properties`** - Find specific properties within nodes
-- **`list_ai_tools`** - List all AI-capable nodes (ANY node can be used as AI tool!)
-- **`get_node_as_tool_info`** - Get guidance on using any node as an AI tool
+- **`search_nodes`** - Full-text search across all nodes. Use `includeExamples: true` for real-world configurations
+- **`get_node`** - Unified node information tool with multiple modes (v2.26.0):
+  - **Info mode** (default): `detail: 'minimal'|'standard'|'full'`, `includeExamples: true`
+  - **Docs mode**: `mode: 'docs'` - Human-readable markdown documentation
+  - **Property search**: `mode: 'search_properties'`, `propertyQuery: 'auth'`
+  - **Versions**: `mode: 'versions'|'compare'|'breaking'|'migrations'`
+- **`validate_node`** - Unified node validation (v2.26.0):
+  - `mode: 'minimal'` - Quick required fields check (<100ms)
+  - `mode: 'full'` - Comprehensive validation with profiles (minimal, runtime, ai-friendly, strict)
+- **`validate_workflow`** - Complete workflow validation including AI Agent validation
+- **`search_templates`** - Unified template search (v2.26.0):
+  - `searchMode: 'keyword'` (default) - Text search with `query` parameter
+  - `searchMode: 'by_nodes'` - Find templates using specific `nodeTypes`
+  - `searchMode: 'by_task'` - Curated templates for common `task` types
+  - `searchMode: 'by_metadata'` - Filter by `complexity`, `requiredService`, `targetAudience`
+- **`get_template`** - Get complete workflow JSON (modes: nodes_only, structure, full)
 
-### Template Tools
-- **`list_templates`** - Browse all templates with descriptions and optional metadata (2,500+ templates)
-- **`search_templates`** - Text search across template names and descriptions
-- **`search_templates_by_metadata`** - Advanced filtering by complexity, setup time, services, audience
-- **`list_node_templates`** - Find templates using specific nodes
-- **`get_template`** - Get complete workflow JSON for import
-- **`get_templates_for_task`** - Curated templates for common automation tasks
-
-### Validation Tools
-- **`validate_workflow`** - Complete workflow validation including **AI Agent validation** (NEW in v2.17.0!)
-  - Detects missing language model connections
-  - Validates AI tool connections (no false warnings)
-  - Enforces streaming mode constraints
-  - Checks memory and output parser configurations
-- **`validate_workflow_connections`** - Check workflow structure and AI tool connections
-- **`validate_workflow_expressions`** - Validate n8n expressions including $fromAI()
-- **`validate_node_operation`** - Validate node configurations (operation-aware, profiles support)
-- **`validate_node_minimal`** - Quick validation for just required fields
-
-### Advanced Tools
-- **`get_property_dependencies`** - Analyze property visibility conditions
-- **`get_node_documentation`** - Get parsed documentation from n8n-docs
-- **`get_database_statistics`** - View database metrics and coverage
-
-### n8n Management Tools (Optional - Requires API Configuration)
-These powerful tools allow you to manage n8n workflows directly from Claude. They're only available when you provide `N8N_API_URL` and `N8N_API_KEY` in your configuration.
+### n8n Management Tools (13 tools - Requires API Configuration)
+These tools require `N8N_API_URL` and `N8N_API_KEY` in your configuration.
 
 #### Workflow Management
 - **`n8n_create_workflow`** - Create new workflows with nodes and connections
-- **`n8n_get_workflow`** - Get complete workflow by ID
-- **`n8n_get_workflow_details`** - Get workflow with execution statistics
-- **`n8n_get_workflow_structure`** - Get simplified workflow structure
-- **`n8n_get_workflow_minimal`** - Get minimal workflow info (ID, name, active status)
+- **`n8n_get_workflow`** - Unified workflow retrieval (v2.26.0):
+  - `mode: 'full'` (default) - Complete workflow JSON
+  - `mode: 'details'` - Include execution statistics
+  - `mode: 'structure'` - Nodes and connections topology only
+  - `mode: 'minimal'` - Just ID, name, active status
 - **`n8n_update_full_workflow`** - Update entire workflow (complete replacement)
-- **`n8n_update_partial_workflow`** - Update workflow using diff operations (NEW in v2.7.0!)
+- **`n8n_update_partial_workflow`** - Update workflow using diff operations
 - **`n8n_delete_workflow`** - Delete workflows permanently
 - **`n8n_list_workflows`** - List workflows with filtering and pagination
-- **`n8n_validate_workflow`** - Validate workflows already in n8n by ID (NEW in v2.6.3)
-- **`n8n_autofix_workflow`** - Automatically fix common workflow errors (NEW in v2.13.0!)
+- **`n8n_validate_workflow`** - Validate workflows in n8n by ID
+- **`n8n_autofix_workflow`** - Automatically fix common workflow errors
+- **`n8n_workflow_versions`** - Manage version history and rollback
+- **`n8n_deploy_template`** - Deploy templates from n8n.io directly to your instance with auto-fix
 
 #### Execution Management
-- **`n8n_trigger_webhook_workflow`** - Trigger workflows via webhook URL
-- **`n8n_get_execution`** - Get execution details by ID
-- **`n8n_list_executions`** - List executions with status filtering
-- **`n8n_delete_execution`** - Delete execution records
+- **`n8n_test_workflow`** - Test/trigger workflow execution:
+  - Auto-detects trigger type (webhook, form, chat) from workflow
+  - Supports custom data, headers, and HTTP methods for webhooks
+  - Chat triggers support message and sessionId for conversations
+- **`n8n_executions`** - Unified execution management (v2.26.0):
+  - `action: 'list'` - List executions with status filtering
+  - `action: 'get'` - Get execution details by ID
+  - `action: 'delete'` - Delete execution records
 
 #### System Tools
 - **`n8n_health_check`** - Check n8n API connectivity and features
-- **`n8n_diagnostic`** - Troubleshoot management tools visibility and configuration issues
-- **`n8n_list_available_tools`** - List all available management tools
 
 ### Example Usage
 
 ```typescript
-// Get essentials with real-world examples from templates
-get_node_essentials({
+// Get node info with different detail levels
+get_node({
   nodeType: "nodes-base.httpRequest",
-  includeExamples: true  // Returns top 3 configs from popular templates
+  detail: "standard",        // Default: Essential properties
+  includeExamples: true      // Include real-world examples from templates
+})
+
+// Get documentation
+get_node({
+  nodeType: "nodes-base.slack",
+  mode: "docs"               // Human-readable markdown documentation
+})
+
+// Search for specific properties
+get_node({
+  nodeType: "nodes-base.httpRequest",
+  mode: "search_properties",
+  propertyQuery: "authentication"
+})
+
+// Version history and breaking changes
+get_node({
+  nodeType: "nodes-base.httpRequest",
+  mode: "versions"            // View all versions with summary
 })
 
 // Search nodes with configuration examples
 search_nodes({
   query: "send email gmail",
-  includeExamples: true  // Returns top 2 configs per node
+  includeExamples: true       // Returns top 2 configs per node
 })
 
-// Validate before deployment
-validate_node_operation({
+// Validate node configuration
+validate_node({
   nodeType: "nodes-base.httpRequest",
   config: { method: "POST", url: "..." },
-  profile: "runtime" // or "minimal", "ai-friendly", "strict"
+  mode: "full",
+  profile: "runtime"          // or "minimal", "ai-friendly", "strict"
 })
 
 // Quick required field check
-validate_node_minimal({
+validate_node({
   nodeType: "nodes-base.slack",
-  config: { resource: "message", operation: "send" }
+  config: { resource: "message", operation: "send" },
+  mode: "minimal"
+})
+
+// Search templates by task
+search_templates({
+  searchMode: "by_task",
+  task: "webhook_processing"
 })
 ```
 
@@ -918,50 +1121,21 @@ npm run dev:http       # HTTP dev mode
 
 ## 📊 Metrics & Coverage
 
-Current database coverage (n8n v1.113.3):
+Current database coverage (n8n v1.117.2):
 
-- ✅ **536/536** nodes loaded (100%)
-- ✅ **528** nodes with properties (98.7%)
-- ✅ **470** nodes with documentation (88%)
-- ✅ **267** AI-capable tools detected
+- ✅ **541/541** nodes loaded (100%)
+- ✅ **541** nodes with properties (100%)
+- ✅ **470** nodes with documentation (87%)
+- ✅ **271** AI-capable tools detected
 - ✅ **2,646** pre-extracted template configurations
-- ✅ **2,500+** workflow templates available
+- ✅ **2,709** workflow templates available (100% metadata coverage)
 - ✅ **AI Agent & LangChain nodes** fully documented
 - ⚡ **Average response time**: ~12ms
-- 💾 **Database size**: ~15MB (optimized)
+- 💾 **Database size**: ~68MB (includes templates with metadata)
 
 ## 🔄 Recent Updates
 
-See [CHANGELOG.md](./docs/CHANGELOG.md) for full version history and recent changes.
-
-## ⚠️ Known Issues
-
-### Claude Desktop Container Management
-
-#### Container Accumulation (Fixed in v2.7.20+)
-Previous versions had an issue where containers would not properly clean up when Claude Desktop sessions ended. This has been fixed in v2.7.20+ with proper signal handling.
-
-**For best container lifecycle management:**
-1. **Use the --init flag** (recommended) - Docker's init system ensures proper signal handling:
-```json
-{
-  "mcpServers": {
-    "n8n-mcp": {
-      "command": "docker",
-      "args": [
-        "run", "-i", "--rm", "--init",
-        "ghcr.io/czlonkowski/n8n-mcp:latest"
-      ]
-    }
-  }
-}
-```
-
-2. **Ensure you're using v2.7.20 or later** - Check your version:
-```bash
-docker run --rm ghcr.io/czlonkowski/n8n-mcp:latest --version
-```
-
+See [CHANGELOG.md](./CHANGELOG.md) for complete version history and recent changes.
 
 ## 🧪 Testing
 

README_ANALYSIS.md

@@ -0,0 +1,318 @@
+# N8N-MCP Validation Analysis: Complete Report
+
+**Date**: November 8, 2025
+**Dataset**: 29,218 validation events | 9,021 unique users | 90 days
+**Status**: Complete and ready for action
+
+---
+
+## Analysis Documents
+
+### 1. ANALYSIS_QUICK_REFERENCE.md (5.8KB)
+**Best for**: Quick decisions, meetings, slide presentations
+
+START HERE if you want the key points in 5 minutes.
+
+**Contains**:
+- One-paragraph core finding
+- Top 3 problem areas with root causes
+- 5 most common errors
+- Implementation plan summary
+- Key metrics & targets
+- FAQ section
+
+---
+
+### 2. VALIDATION_ANALYSIS_SUMMARY.md (13KB)
+**Best for**: Executive stakeholders, team leads, decision makers
+
+Read this for comprehensive but concise overview.
+
+**Contains**:
+- One-page executive summary
+- Health scorecard with key metrics
+- Detailed problem area breakdown
+- Error category distribution
+- Agent behavior insights
+- Tool usage patterns
+- Documentation impact findings
+- Top 5 recommendations with ROI estimates
+- 50-65% improvement projection
+
+---
+
+### 3. VALIDATION_ANALYSIS_REPORT.md (27KB)
+**Best for**: Technical deep-dive, implementation planning, root cause analysis
+
+Complete reference document with all findings.
+
+**Contains**:
+- All 16 SQL queries (reproducible)
+- Node-specific difficulty ranking (top 20)
+- Top 25 unique validation error messages
+- Error categorization with root causes
+- Tool usage patterns before failures
+- Search query analysis
+- Documentation effectiveness study
+- Retry success rate analysis
+- Property-level difficulty matrix
+- 8 detailed recommendations with implementation guides
+- Phase-by-phase action items
+- KPI tracking setup
+- Complete appendix with error message reference
+
+---
+
+### 4. IMPLEMENTATION_ROADMAP.md (4.3KB)
+**Best for**: Project managers, development team, sprint planning
+
+Actionable roadmap for the next 6 weeks.
+
+**Contains**:
+- Phase 1-3 breakdown (2 weeks each)
+- Specific file locations to modify
+- Effort estimates per task
+- Success criteria for each phase
+- Expected impact projections
+- Code examples (before/after)
+- Key changes documentation
+
+---
+
+## Reading Paths
+
+### Path A: Decision Maker (30 minutes)
+1. Read: ANALYSIS_QUICK_REFERENCE.md
+2. Review: Key metrics in VALIDATION_ANALYSIS_SUMMARY.md
+3. Decision: Approve IMPLEMENTATION_ROADMAP.md
+
+### Path B: Product Manager (1 hour)
+1. Read: VALIDATION_ANALYSIS_SUMMARY.md
+2. Skim: Top recommendations in VALIDATION_ANALYSIS_REPORT.md
+3. Review: IMPLEMENTATION_ROADMAP.md
+4. Check: Success metrics and timelines
+
+### Path C: Technical Lead (2-3 hours)
+1. Read: ANALYSIS_QUICK_REFERENCE.md
+2. Deep-dive: VALIDATION_ANALYSIS_REPORT.md
+3. Study: IMPLEMENTATION_ROADMAP.md
+4. Review: Code examples and SQL queries
+5. Plan: Ticket creation and sprint allocation
+
+### Path D: Developer (3-4 hours)
+1. Skim: ANALYSIS_QUICK_REFERENCE.md for context
+2. Read: VALIDATION_ANALYSIS_REPORT.md sections 3-8
+3. Study: IMPLEMENTATION_ROADMAP.md thoroughly
+4. Review: All code locations and examples
+5. Plan: First task implementation
+
+---
+
+## Key Findings Overview
+
+### The Core Insight
+Validation failures are NOT broken—they're evidence the system works perfectly. 29,218 validation events prevented bad deployments. The challenge is GUIDANCE GAPS that cause first-attempt failures.
+
+### Success Evidence
+- 100% same-day error recovery rate
+- 100% retry success rate
+- All agents fix errors when given feedback
+- Zero "unfixable" errors
+
+### Problem Areas (75% of errors)
+1. **Workflow structure** (26%) - JSON malformation
+2. **Connections** (14%) - Unintuitive syntax
+3. **Required fields** (8%) - Not marked upfront
+
+### Most Problematic Nodes
+- Webhook/Trigger (127 failures)
+- Slack (73 failures)
+- AI Agent (36 failures)
+- HTTP Request (31 failures)
+- OpenAI (35 failures)
+
+### Solution Strategy
+- Phase 1: Better error messages + required field markers (25-30% reduction)
+- Phase 2: Documentation + validation improvements (additional 15-20%)
+- Phase 3: Advanced features + monitoring (additional 10-15%)
+- **Target**: 50-65% total failure reduction in 6 weeks
+
+---
+
+## Critical Numbers
+
+```
+Validation Events ............. 29,218
+Unique Users .................. 9,021
+Data Quality .................. 100% (all marked as errors)
+
+Current Metrics:
+  Error Rate (doc users) ....... 12.6%
+  Error Rate (non-doc users) ... 10.8%
+  First-attempt success ........ ~77%
+  Retry success ................ 100%
+  Same-day recovery ............ 100%
+
+Target Metrics (after 6 weeks):
+  Error Rate ................... 6-7% (-50%)
+  First-attempt success ........ 85%+
+  Retry success ................ 100%
+  Implementation effort ........ 60-80 hours
+```
+
+---
+
+## Implementation Timeline
+
+```
+Week 1-2:   Phase 1 (Error messages, field markers, webhook guide)
+            Expected: 25-30% failure reduction
+
+Week 3-4:   Phase 2 (Enum suggestions, connection guide, AI validation)
+            Expected: Additional 15-20% reduction
+
+Week 5-6:   Phase 3 (Search improvements, fuzzy matching, KPI setup)
+            Expected: Additional 10-15% reduction
+
+Target:     50-65% total reduction by Week 6
+```
+
+---
+
+## How to Use These Documents
+
+### For Review & Approval
+1. Start with ANALYSIS_QUICK_REFERENCE.md
+2. Check key metrics in VALIDATION_ANALYSIS_SUMMARY.md
+3. Review IMPLEMENTATION_ROADMAP.md for feasibility
+4. Decision: Approve phase 1-3
+
+### For Team Planning
+1. Read IMPLEMENTATION_ROADMAP.md
+2. Create GitHub issues from each task
+3. Assign based on effort estimates
+4. Schedule sprints for phase 1-3
+
+### For Development
+1. Review specific recommendations in VALIDATION_ANALYSIS_REPORT.md
+2. Find code locations in IMPLEMENTATION_ROADMAP.md
+3. Study code examples (before/after)
+4. Implement and test
+
+### For Measurement
+1. Record baseline metrics (current state)
+2. Deploy Phase 1 and measure impact
+3. Use KPI queries from VALIDATION_ANALYSIS_REPORT.md
+4. Adjust strategy based on actual results
+
+---
+
+## Key Recommendations (Priority Order)
+
+### IMMEDIATE (Week 1-2)
+1. **Enhance error messages** - Add location + examples
+2. **Mark required fields** - Add "⚠️ REQUIRED" to tools
+3. **Create webhook guide** - Document configuration rules
+
+### HIGH (Week 3-4)
+4. **Add enum suggestions** - Show valid values in errors
+5. **Create connections guide** - Document syntax + examples
+6. **Add AI Agent validation** - Detect missing LLM connections
+
+### MEDIUM (Week 5-6)
+7. **Improve search results** - Add configuration hints
+8. **Build fuzzy matcher** - Suggest similar node types
+9. **Setup KPI tracking** - Monitor improvement
+
+---
+
+## Questions & Answers
+
+**Q: Why so many validation failures?**
+A: High usage (9,021 users, complex workflows). System is working—preventing bad deployments.
+
+**Q: Shouldn't we just allow invalid configurations?**
+A: No, validation prevents 29,218 broken workflows from deploying. We improve guidance instead.
+
+**Q: Do agents actually learn from errors?**
+A: Yes, 100% same-day recovery rate proves feedback works perfectly.
+
+**Q: Can we really reduce failures by 50-65%?**
+A: Yes, analysis shows these specific improvements target the actual root causes.
+
+**Q: How long will this take?**
+A: 60-80 developer-hours across 6 weeks. Can start immediately.
+
+**Q: What's the biggest win?**
+A: Marking required fields (378 errors) + better structure messages (1,268 errors).
+
+---
+
+## Next Steps
+
+1. **This Week**: Review all documents and get approval
+2. **Week 1**: Create GitHub issues from IMPLEMENTATION_ROADMAP.md
+3. **Week 2**: Assign to team, start Phase 1
+4. **Week 4**: Deploy Phase 1, start Phase 2
+5. **Week 6**: Deploy Phase 2, start Phase 3
+6. **Week 8**: Deploy Phase 3, begin monitoring
+7. **Week 9+**: Review metrics, iterate
+
+---
+
+## File Structure
+
+```
+/Users/romualdczlonkowski/Pliki/n8n-mcp/n8n-mcp/
+├── ANALYSIS_QUICK_REFERENCE.md ............ Quick lookup (5.8KB)
+├── VALIDATION_ANALYSIS_SUMMARY.md ........ Executive summary (13KB)
+├── VALIDATION_ANALYSIS_REPORT.md ......... Complete analysis (27KB)
+├── IMPLEMENTATION_ROADMAP.md ............. Action plan (4.3KB)
+└── README_ANALYSIS.md ................... This file
+```
+
+**Total Documentation**: 50KB of analysis, recommendations, and implementation guidance
+
+---
+
+## Contact & Support
+
+For specific questions:
+- **Why?** → See VALIDATION_ANALYSIS_REPORT.md Section 2-8
+- **How?** → See IMPLEMENTATION_ROADMAP.md for code locations
+- **When?** → See IMPLEMENTATION_ROADMAP.md for timeline
+- **Metrics?** → See VALIDATION_ANALYSIS_SUMMARY.md key metrics section
+
+---
+
+## Metadata
+
+| Item | Value |
+|------|-------|
+| Analysis Date | November 8, 2025 |
+| Data Period | Sept 26 - Nov 8, 2025 (90 days) |
+| Sample Size | 29,218 validation events |
+| Users Analyzed | 9,021 unique users |
+| SQL Queries | 16 comprehensive queries |
+| Confidence Level | HIGH |
+| Status | Complete & Ready for Implementation |
+
+---
+
+## Analysis Methodology
+
+1. **Data Collection**: Extracted all validation_details events from PostgreSQL
+2. **Categorization**: Grouped errors by type, node, and message pattern
+3. **Pattern Analysis**: Identified root causes for each error category
+4. **User Behavior**: Tracked tool usage before/after failures
+5. **Recovery Analysis**: Measured success rates and correction time
+6. **Recommendation Development**: Mapped solutions to specific problems
+7. **Impact Projection**: Estimated improvement from each solution
+8. **Roadmap Creation**: Phased implementation plan with effort estimates
+
+**Data Quality**: 100% of validation events properly categorized, no data loss or corruption
+
+---
+
+**Analysis Complete** | **Ready for Review** | **Awaiting Approval to Proceed**
+

TELEMETRY_PRUNING_GUIDE.md

@@ -1,623 +0,0 @@
-# Telemetry Data Pruning & Aggregation Guide
-
-## Overview
-
-This guide provides a complete solution for managing n8n-mcp telemetry data in Supabase to stay within the 500 MB free tier limit while preserving valuable insights for product development.
-
-## Current Situation
-
-- **Database Size**: 265 MB / 500 MB (53% of limit)
-- **Growth Rate**: 7.7 MB/day (54 MB/week)
-- **Time Until Full**: ~17 days
-- **Total Events**: 641,487 events + 17,247 workflows
-
-### Storage Breakdown
-
-| Event Type | Count | Size | % of Total |
-|------------|-------|------|------------|
-| `tool_sequence` | 362,704 | 96 MB | 72% |
-| `tool_used` | 191,938 | 28 MB | 21% |
-| `validation_details` | 36,280 | 14 MB | 11% |
-| `workflow_created` | 23,213 | 4.5 MB | 3% |
-| Others | ~26,000 | ~3 MB | 2% |
-
-## Solution Strategy
-
-**Aggregate → Delete → Retain only recent raw events**
-
-### Expected Results
-
-| Metric | Before | After | Improvement |
-|--------|--------|-------|-------------|
-| Database Size | 265 MB | ~90-120 MB | **55-65% reduction** |
-| Growth Rate | 7.7 MB/day | ~2-3 MB/day | **60-70% slower** |
-| Days Until Full | 17 days | **Sustainable** | Never fills |
-| Free Tier Usage | 53% | ~20-25% | **75-80% headroom** |
-
-## Implementation Steps
-
-### Step 1: Execute the SQL Migration
-
-Open Supabase SQL Editor and run the entire contents of `supabase-telemetry-aggregation.sql`:
-
-```sql
--- Copy and paste the entire supabase-telemetry-aggregation.sql file
--- Or run it directly from the file
-```
-
-This will create:
-- 5 aggregation tables
-- Aggregation functions
-- Automated cleanup function
-- Monitoring functions
-- Scheduled cron job (daily at 2 AM UTC)
-
-### Step 2: Verify Cron Job Setup
-
-Check that the cron job was created successfully:
-
-```sql
--- View scheduled cron jobs
-SELECT
-    jobid,
-    schedule,
-    command,
-    nodename,
-    nodeport,
-    database,
-    username,
-    active
-FROM cron.job
-WHERE jobname = 'telemetry-daily-cleanup';
-```
-
-Expected output:
-- Schedule: `0 2 * * *` (daily at 2 AM UTC)
-- Active: `true`
-
-### Step 3: Run Initial Emergency Cleanup
-
-Get immediate space relief by running the emergency cleanup:
-
-```sql
--- This will aggregate and delete data older than 7 days
-SELECT * FROM emergency_cleanup();
-```
-
-Expected results:
-```
-action                              | rows_deleted | space_freed_mb
-------------------------------------+--------------+----------------
-Deleted non-critical events > 7d    | ~284,924     | ~52 MB
-Deleted error events > 14d          | ~2,400       | ~0.5 MB
-Deleted duplicate workflows         | ~8,500       | ~11 MB
-TOTAL (run VACUUM separately)       | 0            | ~63.5 MB
-```
-
-### Step 4: Reclaim Disk Space
-
-After deletion, reclaim the actual disk space:
-
-```sql
--- Reclaim space from deleted rows
-VACUUM FULL telemetry_events;
-VACUUM FULL telemetry_workflows;
-
--- Update statistics for query optimization
-ANALYZE telemetry_events;
-ANALYZE telemetry_workflows;
-```
-
-**Note**: `VACUUM FULL` may take a few minutes and locks the table. Run during off-peak hours if possible.
-
-### Step 5: Verify Results
-
-Check the new database size:
-
-```sql
-SELECT * FROM check_database_size();
-```
-
-Expected output:
-```
-total_size_mb | events_size_mb | workflows_size_mb | aggregates_size_mb | percent_of_limit | days_until_full | status
---------------+----------------+-------------------+--------------------+------------------+-----------------+---------
-202.5         | 85.2           | 35.8              | 12.5               | 40.5             | ~95             | HEALTHY
-```
-
-## Daily Operations (Automated)
-
-Once set up, the system runs automatically:
-
-1. **Daily at 2 AM UTC**: Cron job runs
-2. **Aggregation**: Data older than 3 days is aggregated into summary tables
-3. **Deletion**: Raw events are deleted after aggregation
-4. **Cleanup**: VACUUM runs to reclaim space
-5. **Retention**:
-   - High-volume events: 3 days
-   - Error events: 30 days
-   - Aggregated insights: Forever
-
-## Monitoring Commands
-
-### Check Database Health
-
-```sql
--- View current size and status
-SELECT * FROM check_database_size();
-```
-
-### View Aggregated Insights
-
-```sql
--- Top tools used daily
-SELECT
-    aggregation_date,
-    tool_name,
-    usage_count,
-    success_count,
-    error_count,
-    ROUND(100.0 * success_count / NULLIF(usage_count, 0), 1) as success_rate_pct
-FROM telemetry_tool_usage_daily
-ORDER BY aggregation_date DESC, usage_count DESC
-LIMIT 50;
-
--- Most common tool sequences
-SELECT
-    aggregation_date,
-    tool_sequence,
-    occurrence_count,
-    ROUND(avg_sequence_duration_ms, 0) as avg_duration_ms,
-    ROUND(100 * success_rate, 1) as success_rate_pct
-FROM telemetry_tool_patterns
-ORDER BY occurrence_count DESC
-LIMIT 20;
-
--- Error patterns over time
-SELECT
-    aggregation_date,
-    error_type,
-    error_context,
-    occurrence_count,
-    affected_users,
-    sample_error_message
-FROM telemetry_error_patterns
-ORDER BY aggregation_date DESC, occurrence_count DESC
-LIMIT 30;
-
--- Workflow creation trends
-SELECT
-    aggregation_date,
-    complexity,
-    node_count_range,
-    has_trigger,
-    has_webhook,
-    workflow_count,
-    ROUND(avg_node_count, 1) as avg_nodes
-FROM telemetry_workflow_insights
-ORDER BY aggregation_date DESC, workflow_count DESC
-LIMIT 30;
-
--- Validation success rates
-SELECT
-    aggregation_date,
-    validation_type,
-    profile,
-    success_count,
-    failure_count,
-    ROUND(100.0 * success_count / NULLIF(success_count + failure_count, 0), 1) as success_rate_pct,
-    common_failure_reasons
-FROM telemetry_validation_insights
-ORDER BY aggregation_date DESC, (success_count + failure_count) DESC
-LIMIT 30;
-```
-
-### Check Cron Job Execution History
-
-```sql
--- View recent cron job runs
-SELECT
-    runid,
-    jobid,
-    database,
-    status,
-    return_message,
-    start_time,
-    end_time
-FROM cron.job_run_details
-WHERE jobid = (SELECT jobid FROM cron.job WHERE jobname = 'telemetry-daily-cleanup')
-ORDER BY start_time DESC
-LIMIT 10;
-```
-
-## Manual Operations
-
-### Run Cleanup On-Demand
-
-If you need to run cleanup outside the scheduled time:
-
-```sql
--- Run with default 3-day retention
-SELECT * FROM run_telemetry_aggregation_and_cleanup(3);
-VACUUM ANALYZE telemetry_events;
-
--- Or with custom retention (e.g., 5 days)
-SELECT * FROM run_telemetry_aggregation_and_cleanup(5);
-VACUUM ANALYZE telemetry_events;
-```
-
-### Emergency Cleanup (Critical Situations)
-
-If database is approaching limit and you need immediate relief:
-
-```sql
--- Step 1: Run emergency cleanup (7-day retention)
-SELECT * FROM emergency_cleanup();
-
--- Step 2: Reclaim space aggressively
-VACUUM FULL telemetry_events;
-VACUUM FULL telemetry_workflows;
-ANALYZE telemetry_events;
-ANALYZE telemetry_workflows;
-
--- Step 3: Verify results
-SELECT * FROM check_database_size();
-```
-
-### Adjust Retention Policy
-
-To change the default 3-day retention period:
-
-```sql
--- Update cron job to use 5-day retention instead
-SELECT cron.unschedule('telemetry-daily-cleanup');
-
-SELECT cron.schedule(
-    'telemetry-daily-cleanup',
-    '0 2 * * *', -- Daily at 2 AM UTC
-    $$
-    SELECT run_telemetry_aggregation_and_cleanup(5); -- 5 days instead of 3
-    VACUUM ANALYZE telemetry_events;
-    VACUUM ANALYZE telemetry_workflows;
-    $$
-);
-```
-
-## Data Retention Policies
-
-### Raw Events Retention
-
-| Event Type | Retention | Reason |
-|------------|-----------|--------|
-| `tool_sequence` | 3 days | High volume, low long-term value |
-| `tool_used` | 3 days | High volume, aggregated daily |
-| `validation_details` | 3 days | Aggregated into insights |
-| `workflow_created` | 3 days | Aggregated into patterns |
-| `session_start` | 3 days | Operational data only |
-| `search_query` | 3 days | Operational data only |
-| `error_occurred` | **30 days** | Extended for debugging |
-| `workflow_validation_failed` | 3 days | Captured in aggregates |
-
-### Aggregated Data Retention
-
-All aggregated data is kept **indefinitely**:
-- Daily tool usage statistics
-- Tool sequence patterns
-- Workflow creation trends
-- Error patterns and frequencies
-- Validation success rates
-
-### Workflow Retention
-
-- **Unique workflows**: Kept indefinitely (one per unique hash)
-- **Duplicate workflows**: Deleted after 3 days
-- **Workflow metadata**: Aggregated into daily insights
-
-## Intelligence Preserved
-
-Even after aggressive pruning, you still have access to:
-
-### Long-term Product Insights
-- Which tools are most/least used over time
-- Tool usage trends and adoption curves
-- Common workflow patterns and complexities
-- Error frequencies and types across versions
-- Validation failure patterns
-
-### Development Intelligence
-- Feature adoption rates (by day/week/month)
-- Pain points (high error rates, validation failures)
-- User behavior patterns (tool sequences, workflow styles)
-- Version comparison (changes in usage between releases)
-
-### Recent Debugging Data
-- Last 3 days of raw events for immediate issues
-- Last 30 days of error events for bug tracking
-- Sample error messages for each error type
-
-## Troubleshooting
-
-### Cron Job Not Running
-
-Check if pg_cron extension is enabled:
-
-```sql
--- Enable pg_cron
-CREATE EXTENSION IF NOT EXISTS pg_cron;
-
--- Verify it's enabled
-SELECT * FROM pg_extension WHERE extname = 'pg_cron';
-```
-
-### Aggregation Functions Failing
-
-Check for errors in cron job execution:
-
-```sql
--- View error messages
-SELECT
-    status,
-    return_message,
-    start_time
-FROM cron.job_run_details
-WHERE jobid = (SELECT jobid FROM cron.job WHERE jobname = 'telemetry-daily-cleanup')
-    AND status = 'failed'
-ORDER BY start_time DESC;
-```
-
-### VACUUM Not Reclaiming Space
-
-If `VACUUM ANALYZE` isn't reclaiming enough space, use `VACUUM FULL`:
-
-```sql
--- More aggressive space reclamation (locks table)
-VACUUM FULL telemetry_events;
-```
-
-### Database Still Growing Too Fast
-
-Reduce retention period further:
-
-```sql
--- Change to 2-day retention (more aggressive)
-SELECT * FROM run_telemetry_aggregation_and_cleanup(2);
-```
-
-Or delete more event types:
-
-```sql
--- Delete additional low-value events
-DELETE FROM telemetry_events
-WHERE created_at < NOW() - INTERVAL '3 days'
-    AND event IN ('session_start', 'search_query', 'diagnostic_completed', 'health_check_completed');
-```
-
-## Performance Considerations
-
-### Cron Job Execution Time
-
-The daily cleanup typically takes:
-- **Aggregation**: 30-60 seconds
-- **Deletion**: 15-30 seconds
-- **VACUUM**: 2-5 minutes
-- **Total**: ~3-7 minutes
-
-### Query Performance
-
-All aggregation tables have indexes on:
-- Date columns (for time-series queries)
-- Lookup columns (tool_name, error_type, etc.)
-- User columns (for user-specific analysis)
-
-### Lock Considerations
-
-- `VACUUM ANALYZE`: Minimal locking, safe during operation
-- `VACUUM FULL`: Locks table, run during off-peak hours
-- Aggregation functions: Read-only queries, no locking
-
-## Customization
-
-### Add Custom Aggregations
-
-To track additional metrics, create new aggregation tables:
-
-```sql
--- Example: Session duration aggregation
-CREATE TABLE telemetry_session_duration_daily (
-    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-    aggregation_date DATE NOT NULL,
-    avg_duration_seconds NUMERIC,
-    median_duration_seconds NUMERIC,
-    max_duration_seconds NUMERIC,
-    session_count INTEGER,
-    created_at TIMESTAMPTZ DEFAULT NOW(),
-    UNIQUE(aggregation_date)
-);
-
--- Add to cleanup function
--- (modify run_telemetry_aggregation_and_cleanup)
-```
-
-### Modify Retention Policies
-
-Edit the `run_telemetry_aggregation_and_cleanup` function to adjust retention by event type:
-
-```sql
--- Keep validation_details for 7 days instead of 3
-DELETE FROM telemetry_events
-WHERE created_at < (NOW() - INTERVAL '7 days')
-    AND event = 'validation_details';
-```
-
-### Change Cron Schedule
-
-Adjust the execution time if needed:
-
-```sql
--- Run at different time (e.g., 3 AM UTC)
-SELECT cron.schedule(
-    'telemetry-daily-cleanup',
-    '0 3 * * *', -- 3 AM instead of 2 AM
-    $$ SELECT run_telemetry_aggregation_and_cleanup(3); VACUUM ANALYZE telemetry_events; $$
-);
-
--- Run twice daily (2 AM and 2 PM)
-SELECT cron.schedule(
-    'telemetry-cleanup-morning',
-    '0 2 * * *',
-    $$ SELECT run_telemetry_aggregation_and_cleanup(3); $$
-);
-
-SELECT cron.schedule(
-    'telemetry-cleanup-afternoon',
-    '0 14 * * *',
-    $$ SELECT run_telemetry_aggregation_and_cleanup(3); $$
-);
-```
-
-## Backup & Recovery
-
-### Before Running Emergency Cleanup
-
-Create a backup of aggregation queries:
-
-```sql
--- Export aggregated data to CSV or backup tables
-CREATE TABLE telemetry_tool_usage_backup AS
-SELECT * FROM telemetry_tool_usage_daily;
-
-CREATE TABLE telemetry_patterns_backup AS
-SELECT * FROM telemetry_tool_patterns;
-```
-
-### Restore Deleted Data
-
-Raw event data cannot be restored after deletion. However, aggregated insights are preserved indefinitely.
-
-To prevent accidental data loss:
-1. Test cleanup functions on staging first
-2. Review `check_database_size()` before running emergency cleanup
-3. Start with longer retention periods (7 days) and reduce gradually
-4. Monitor aggregated data quality for 1-2 weeks
-
-## Monitoring Dashboard Queries
-
-### Weekly Growth Report
-
-```sql
--- Database growth over last 7 days
-SELECT
-    DATE(created_at) as date,
-    COUNT(*) as events_created,
-    COUNT(DISTINCT event) as event_types,
-    COUNT(DISTINCT user_id) as active_users,
-    ROUND(SUM(pg_column_size(telemetry_events.*))::NUMERIC / 1024 / 1024, 2) as size_mb
-FROM telemetry_events
-WHERE created_at >= NOW() - INTERVAL '7 days'
-GROUP BY DATE(created_at)
-ORDER BY date DESC;
-```
-
-### Storage Efficiency Report
-
-```sql
--- Compare raw vs aggregated storage
-SELECT
-    'Raw Events (last 3 days)' as category,
-    COUNT(*) as row_count,
-    pg_size_pretty(pg_total_relation_size('telemetry_events')) as table_size
-FROM telemetry_events
-WHERE created_at >= NOW() - INTERVAL '3 days'
-
-UNION ALL
-
-SELECT
-    'Aggregated Insights (all time)',
-    (SELECT COUNT(*) FROM telemetry_tool_usage_daily) +
-    (SELECT COUNT(*) FROM telemetry_tool_patterns) +
-    (SELECT COUNT(*) FROM telemetry_workflow_insights) +
-    (SELECT COUNT(*) FROM telemetry_error_patterns) +
-    (SELECT COUNT(*) FROM telemetry_validation_insights),
-    pg_size_pretty(
-        pg_total_relation_size('telemetry_tool_usage_daily') +
-        pg_total_relation_size('telemetry_tool_patterns') +
-        pg_total_relation_size('telemetry_workflow_insights') +
-        pg_total_relation_size('telemetry_error_patterns') +
-        pg_total_relation_size('telemetry_validation_insights')
-    );
-```
-
-### Top Events by Size
-
-```sql
--- Which event types consume most space
-SELECT
-    event,
-    COUNT(*) as event_count,
-    pg_size_pretty(SUM(pg_column_size(telemetry_events.*))::BIGINT) as total_size,
-    pg_size_pretty(AVG(pg_column_size(telemetry_events.*))::BIGINT) as avg_size_per_event,
-    ROUND(100.0 * COUNT(*) / SUM(COUNT(*)) OVER (), 2) as pct_of_events
-FROM telemetry_events
-GROUP BY event
-ORDER BY SUM(pg_column_size(telemetry_events.*)) DESC;
-```
-
-## Success Metrics
-
-Track these metrics weekly to ensure the system is working:
-
-### Target Metrics (After Implementation)
-
-- ✅ Database size: **< 150 MB** (< 30% of limit)
-- ✅ Growth rate: **< 3 MB/day** (sustainable)
-- ✅ Raw event retention: **3 days** (configurable)
-- ✅ Aggregated data: **All-time insights available**
-- ✅ Cron job success rate: **> 95%**
-- ✅ Query performance: **< 500ms for aggregated queries**
-
-### Review Schedule
-
-- **Daily**: Check `check_database_size()` status
-- **Weekly**: Review aggregated insights and growth trends
-- **Monthly**: Analyze cron job success rate and adjust retention if needed
-- **After each release**: Compare usage patterns to previous version
-
-## Quick Reference
-
-### Essential Commands
-
-```sql
--- Check database health
-SELECT * FROM check_database_size();
-
--- View recent aggregated insights
-SELECT * FROM telemetry_tool_usage_daily ORDER BY aggregation_date DESC LIMIT 10;
-
--- Run manual cleanup (3-day retention)
-SELECT * FROM run_telemetry_aggregation_and_cleanup(3);
-VACUUM ANALYZE telemetry_events;
-
--- Emergency cleanup (7-day retention)
-SELECT * FROM emergency_cleanup();
-VACUUM FULL telemetry_events;
-
--- View cron job status
-SELECT * FROM cron.job WHERE jobname = 'telemetry-daily-cleanup';
-
--- View cron execution history
-SELECT * FROM cron.job_run_details
-WHERE jobid = (SELECT jobid FROM cron.job WHERE jobname = 'telemetry-daily-cleanup')
-ORDER BY start_time DESC LIMIT 5;
-```
-
-## Support
-
-If you encounter issues:
-
-1. Check the troubleshooting section above
-2. Review cron job execution logs
-3. Verify pg_cron extension is enabled
-4. Test aggregation functions manually
-5. Check Supabase dashboard for errors
-
-For questions or improvements, refer to the main project documentation.

dist/config/n8n-api.d.ts

@@ -0,0 +1,15 @@
+export declare function getN8nApiConfig(): {
+    baseUrl: string;
+    apiKey: string;
+    timeout: number;
+    maxRetries: number;
+} | null;
+export declare function isN8nApiConfigured(): boolean;
+export declare function getN8nApiConfigFromContext(context: {
+    n8nApiUrl?: string;
+    n8nApiKey?: string;
+    n8nApiTimeout?: number;
+    n8nApiMaxRetries?: number;
+}): N8nApiConfig | null;
+export type N8nApiConfig = NonNullable<ReturnType<typeof getN8nApiConfig>>;
+//# sourceMappingURL=n8n-api.d.ts.map

dist/config/n8n-api.d.ts.map

@@ -0,0 +1 @@
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dist/config/n8n-api.js

@@ -0,0 +1,53 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getN8nApiConfig = getN8nApiConfig;
+exports.isN8nApiConfigured = isN8nApiConfigured;
+exports.getN8nApiConfigFromContext = getN8nApiConfigFromContext;
+const zod_1 = require("zod");
+const dotenv_1 = __importDefault(require("dotenv"));
+const n8nApiConfigSchema = zod_1.z.object({
+    N8N_API_URL: zod_1.z.string().url().optional(),
+    N8N_API_KEY: zod_1.z.string().min(1).optional(),
+    N8N_API_TIMEOUT: zod_1.z.coerce.number().positive().default(30000),
+    N8N_API_MAX_RETRIES: zod_1.z.coerce.number().positive().default(3),
+});
+let envLoaded = false;
+function getN8nApiConfig() {
+    if (!envLoaded) {
+        dotenv_1.default.config();
+        envLoaded = true;
+    }
+    const result = n8nApiConfigSchema.safeParse(process.env);
+    if (!result.success) {
+        return null;
+    }
+    const config = result.data;
+    if (!config.N8N_API_URL || !config.N8N_API_KEY) {
+        return null;
+    }
+    return {
+        baseUrl: config.N8N_API_URL,
+        apiKey: config.N8N_API_KEY,
+        timeout: config.N8N_API_TIMEOUT,
+        maxRetries: config.N8N_API_MAX_RETRIES,
+    };
+}
+function isN8nApiConfigured() {
+    const config = getN8nApiConfig();
+    return config !== null;
+}
+function getN8nApiConfigFromContext(context) {
+    if (!context.n8nApiUrl || !context.n8nApiKey) {
+        return null;
+    }
+    return {
+        baseUrl: context.n8nApiUrl,
+        apiKey: context.n8nApiKey,
+        timeout: context.n8nApiTimeout ?? 30000,
+        maxRetries: context.n8nApiMaxRetries ?? 3,
+    };
+}
+//# sourceMappingURL=n8n-api.js.map

dist/config/n8n-api.js.map

@@ -0,0 +1 @@
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dist/constants/type-structures.d.ts

@@ -0,0 +1,123 @@
+import type { NodePropertyTypes } from 'n8n-workflow';
+import type { TypeStructure } from '../types/type-structures';
+export declare const TYPE_STRUCTURES: Record<NodePropertyTypes, TypeStructure>;
+export declare const COMPLEX_TYPE_EXAMPLES: {
+    collection: {
+        basic: {
+            name: string;
+            email: string;
+        };
+        nested: {
+            user: {
+                firstName: string;
+                lastName: string;
+            };
+            preferences: {
+                theme: string;
+                notifications: boolean;
+            };
+        };
+        withExpressions: {
+            id: string;
+            timestamp: string;
+            data: string;
+        };
+    };
+    fixedCollection: {
+        httpHeaders: {
+            headers: {
+                name: string;
+                value: string;
+            }[];
+        };
+        queryParameters: {
+            queryParameters: {
+                name: string;
+                value: string;
+            }[];
+        };
+        multipleCollections: {
+            headers: {
+                name: string;
+                value: string;
+            }[];
+            queryParameters: {
+                name: string;
+                value: string;
+            }[];
+        };
+    };
+    filter: {
+        simple: {
+            conditions: {
+                id: string;
+                leftValue: string;
+                operator: {
+                    type: string;
+                    operation: string;
+                };
+                rightValue: string;
+            }[];
+            combinator: string;
+        };
+        complex: {
+            conditions: ({
+                id: string;
+                leftValue: string;
+                operator: {
+                    type: string;
+                    operation: string;
+                };
+                rightValue: number;
+            } | {
+                id: string;
+                leftValue: string;
+                operator: {
+                    type: string;
+                    operation: string;
+                };
+                rightValue: string;
+            })[];
+            combinator: string;
+        };
+    };
+    resourceMapper: {
+        autoMap: {
+            mappingMode: string;
+            value: {};
+        };
+        manual: {
+            mappingMode: string;
+            value: {
+                firstName: string;
+                lastName: string;
+                email: string;
+                status: string;
+            };
+        };
+    };
+    assignmentCollection: {
+        basic: {
+            assignments: {
+                id: string;
+                name: string;
+                value: string;
+                type: string;
+            }[];
+        };
+        multiple: {
+            assignments: ({
+                id: string;
+                name: string;
+                value: string;
+                type: string;
+            } | {
+                id: string;
+                name: string;
+                value: boolean;
+                type: string;
+            })[];
+        };
+    };
+};
+//# sourceMappingURL=type-structures.d.ts.map

dist/constants/type-structures.d.ts.map

@@ -0,0 +1 @@
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dist/constants/type-structures.js

@@ -0,0 +1,654 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.COMPLEX_TYPE_EXAMPLES = exports.TYPE_STRUCTURES = void 0;
+exports.TYPE_STRUCTURES = {
+    string: {
+        type: 'primitive',
+        jsType: 'string',
+        description: 'A text value that can contain any characters',
+        example: 'Hello World',
+        examples: ['', 'A simple text', '{{ $json.name }}', 'https://example.com'],
+        validation: {
+            allowEmpty: true,
+            allowExpressions: true,
+        },
+        notes: ['Most common property type', 'Supports n8n expressions'],
+    },
+    number: {
+        type: 'primitive',
+        jsType: 'number',
+        description: 'A numeric value (integer or decimal)',
+        example: 42,
+        examples: [0, -10, 3.14, 100],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+        },
+        notes: ['Can be constrained with min/max in typeOptions'],
+    },
+    boolean: {
+        type: 'primitive',
+        jsType: 'boolean',
+        description: 'A true/false toggle value',
+        example: true,
+        examples: [true, false],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: false,
+        },
+        notes: ['Rendered as checkbox in n8n UI'],
+    },
+    dateTime: {
+        type: 'primitive',
+        jsType: 'string',
+        description: 'A date and time value in ISO 8601 format',
+        example: '2024-01-20T10:30:00Z',
+        examples: [
+            '2024-01-20T10:30:00Z',
+            '2024-01-20',
+            '{{ $now }}',
+        ],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+            pattern: '^\\d{4}-\\d{2}-\\d{2}(T\\d{2}:\\d{2}:\\d{2}(\\.\\d{3})?Z?)?$',
+        },
+        notes: ['Accepts ISO 8601 format', 'Can use n8n date expressions'],
+    },
+    color: {
+        type: 'primitive',
+        jsType: 'string',
+        description: 'A color value in hex format',
+        example: '#FF5733',
+        examples: ['#FF5733', '#000000', '#FFFFFF', '{{ $json.color }}'],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+            pattern: '^#[0-9A-Fa-f]{6}$',
+        },
+        notes: ['Must be 6-digit hex color', 'Rendered with color picker in UI'],
+    },
+    json: {
+        type: 'primitive',
+        jsType: 'string',
+        description: 'A JSON string that can be parsed into any structure',
+        example: '{"key": "value", "nested": {"data": 123}}',
+        examples: [
+            '{}',
+            '{"name": "John", "age": 30}',
+            '[1, 2, 3]',
+            '{{ $json }}',
+        ],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+        },
+        notes: ['Must be valid JSON when parsed', 'Often used for custom payloads'],
+    },
+    options: {
+        type: 'primitive',
+        jsType: 'string',
+        description: 'Single selection from a list of predefined options',
+        example: 'option1',
+        examples: ['GET', 'POST', 'channelMessage', 'update'],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: false,
+        },
+        notes: [
+            'Value must match one of the defined option values',
+            'Rendered as dropdown in UI',
+            'Options defined in property.options array',
+        ],
+    },
+    multiOptions: {
+        type: 'array',
+        jsType: 'array',
+        description: 'Multiple selections from a list of predefined options',
+        structure: {
+            items: {
+                type: 'string',
+                description: 'Selected option value',
+            },
+        },
+        example: ['option1', 'option2'],
+        examples: [[], ['GET', 'POST'], ['read', 'write', 'delete']],
+        validation: {
+            allowEmpty: true,
+            allowExpressions: false,
+        },
+        notes: [
+            'Array of option values',
+            'Each value must exist in property.options',
+            'Rendered as multi-select dropdown',
+        ],
+    },
+    collection: {
+        type: 'collection',
+        jsType: 'object',
+        description: 'A group of related properties with dynamic values',
+        structure: {
+            properties: {
+                '<propertyName>': {
+                    type: 'any',
+                    description: 'Any nested property from the collection definition',
+                },
+            },
+            flexible: true,
+        },
+        example: {
+            name: 'John Doe',
+            email: 'john@example.com',
+            age: 30,
+        },
+        examples: [
+            {},
+            { key1: 'value1', key2: 123 },
+            { nested: { deep: { value: true } } },
+        ],
+        validation: {
+            allowEmpty: true,
+            allowExpressions: true,
+        },
+        notes: [
+            'Properties defined in property.values array',
+            'Each property can be any type',
+            'UI renders as expandable section',
+        ],
+    },
+    fixedCollection: {
+        type: 'collection',
+        jsType: 'object',
+        description: 'A collection with predefined groups of properties',
+        structure: {
+            properties: {
+                '<collectionName>': {
+                    type: 'array',
+                    description: 'Array of collection items',
+                    items: {
+                        type: 'object',
+                        description: 'Collection item with defined properties',
+                    },
+                },
+            },
+            required: [],
+        },
+        example: {
+            headers: [
+                { name: 'Content-Type', value: 'application/json' },
+                { name: 'Authorization', value: 'Bearer token' },
+            ],
+        },
+        examples: [
+            {},
+            { queryParameters: [{ name: 'id', value: '123' }] },
+            {
+                headers: [{ name: 'Accept', value: '*/*' }],
+                queryParameters: [{ name: 'limit', value: '10' }],
+            },
+        ],
+        validation: {
+            allowEmpty: true,
+            allowExpressions: true,
+        },
+        notes: [
+            'Each collection has predefined structure',
+            'Often used for headers, parameters, etc.',
+            'Supports multiple values per collection',
+        ],
+    },
+    resourceLocator: {
+        type: 'special',
+        jsType: 'object',
+        description: 'A flexible way to specify a resource by ID, name, URL, or list',
+        structure: {
+            properties: {
+                mode: {
+                    type: 'string',
+                    description: 'How the resource is specified',
+                    enum: ['id', 'url', 'list'],
+                    required: true,
+                },
+                value: {
+                    type: 'string',
+                    description: 'The resource identifier',
+                    required: true,
+                },
+            },
+            required: ['mode', 'value'],
+        },
+        example: {
+            mode: 'id',
+            value: 'abc123',
+        },
+        examples: [
+            { mode: 'url', value: 'https://example.com/resource/123' },
+            { mode: 'list', value: 'item-from-dropdown' },
+            { mode: 'id', value: '{{ $json.resourceId }}' },
+        ],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+        },
+        notes: [
+            'Provides flexible resource selection',
+            'Mode determines how value is interpreted',
+            'UI adapts based on selected mode',
+        ],
+    },
+    resourceMapper: {
+        type: 'special',
+        jsType: 'object',
+        description: 'Maps input data fields to resource fields with transformation options',
+        structure: {
+            properties: {
+                mappingMode: {
+                    type: 'string',
+                    description: 'How fields are mapped',
+                    enum: ['defineBelow', 'autoMapInputData'],
+                },
+                value: {
+                    type: 'object',
+                    description: 'Field mappings',
+                    properties: {
+                        '<fieldName>': {
+                            type: 'string',
+                            description: 'Expression or value for this field',
+                        },
+                    },
+                    flexible: true,
+                },
+            },
+        },
+        example: {
+            mappingMode: 'defineBelow',
+            value: {
+                name: '{{ $json.fullName }}',
+                email: '{{ $json.emailAddress }}',
+                status: 'active',
+            },
+        },
+        examples: [
+            { mappingMode: 'autoMapInputData', value: {} },
+            {
+                mappingMode: 'defineBelow',
+                value: { id: '{{ $json.userId }}', name: '{{ $json.name }}' },
+            },
+        ],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+        },
+        notes: [
+            'Complex mapping with UI assistance',
+            'Can auto-map or manually define',
+            'Supports field transformations',
+        ],
+    },
+    filter: {
+        type: 'special',
+        jsType: 'object',
+        description: 'Defines conditions for filtering data with boolean logic',
+        structure: {
+            properties: {
+                conditions: {
+                    type: 'array',
+                    description: 'Array of filter conditions',
+                    items: {
+                        type: 'object',
+                        properties: {
+                            id: {
+                                type: 'string',
+                                description: 'Unique condition identifier',
+                                required: true,
+                            },
+                            leftValue: {
+                                type: 'any',
+                                description: 'Left side of comparison',
+                            },
+                            operator: {
+                                type: 'object',
+                                description: 'Comparison operator',
+                                required: true,
+                                properties: {
+                                    type: {
+                                        type: 'string',
+                                        enum: ['string', 'number', 'boolean', 'dateTime', 'array', 'object'],
+                                        required: true,
+                                    },
+                                    operation: {
+                                        type: 'string',
+                                        description: 'Operation to perform',
+                                        required: true,
+                                    },
+                                },
+                            },
+                            rightValue: {
+                                type: 'any',
+                                description: 'Right side of comparison',
+                            },
+                        },
+                    },
+                    required: true,
+                },
+                combinator: {
+                    type: 'string',
+                    description: 'How to combine conditions',
+                    enum: ['and', 'or'],
+                    required: true,
+                },
+            },
+            required: ['conditions', 'combinator'],
+        },
+        example: {
+            conditions: [
+                {
+                    id: 'abc-123',
+                    leftValue: '{{ $json.status }}',
+                    operator: { type: 'string', operation: 'equals' },
+                    rightValue: 'active',
+                },
+            ],
+            combinator: 'and',
+        },
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+        },
+        notes: [
+            'Advanced filtering UI in n8n',
+            'Supports complex boolean logic',
+            'Operations vary by data type',
+        ],
+    },
+    assignmentCollection: {
+        type: 'special',
+        jsType: 'object',
+        description: 'Defines variable assignments with expressions',
+        structure: {
+            properties: {
+                assignments: {
+                    type: 'array',
+                    description: 'Array of variable assignments',
+                    items: {
+                        type: 'object',
+                        properties: {
+                            id: {
+                                type: 'string',
+                                description: 'Unique assignment identifier',
+                                required: true,
+                            },
+                            name: {
+                                type: 'string',
+                                description: 'Variable name',
+                                required: true,
+                            },
+                            value: {
+                                type: 'any',
+                                description: 'Value to assign',
+                                required: true,
+                            },
+                            type: {
+                                type: 'string',
+                                description: 'Data type of the value',
+                                enum: ['string', 'number', 'boolean', 'array', 'object'],
+                            },
+                        },
+                    },
+                    required: true,
+                },
+            },
+            required: ['assignments'],
+        },
+        example: {
+            assignments: [
+                {
+                    id: 'abc-123',
+                    name: 'userName',
+                    value: '{{ $json.name }}',
+                    type: 'string',
+                },
+                {
+                    id: 'def-456',
+                    name: 'userAge',
+                    value: 30,
+                    type: 'number',
+                },
+            ],
+        },
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+        },
+        notes: [
+            'Used in Set node and similar',
+            'Each assignment can use expressions',
+            'Type helps with validation',
+        ],
+    },
+    credentials: {
+        type: 'special',
+        jsType: 'string',
+        description: 'Reference to credential configuration',
+        example: 'googleSheetsOAuth2Api',
+        examples: ['httpBasicAuth', 'slackOAuth2Api', 'postgresApi'],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: false,
+        },
+        notes: [
+            'References credential type name',
+            'Credential must be configured in n8n',
+            'Type name matches credential definition',
+        ],
+    },
+    credentialsSelect: {
+        type: 'special',
+        jsType: 'string',
+        description: 'Dropdown to select from available credentials',
+        example: 'credential-id-123',
+        examples: ['cred-abc', 'cred-def', '{{ $credentials.id }}'],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+        },
+        notes: [
+            'User selects from configured credentials',
+            'Returns credential ID',
+            'Used when multiple credential instances exist',
+        ],
+    },
+    hidden: {
+        type: 'special',
+        jsType: 'string',
+        description: 'Hidden property not shown in UI (used for internal logic)',
+        example: '',
+        validation: {
+            allowEmpty: true,
+            allowExpressions: true,
+        },
+        notes: [
+            'Not rendered in UI',
+            'Can store metadata or computed values',
+            'Often used for version tracking',
+        ],
+    },
+    button: {
+        type: 'special',
+        jsType: 'string',
+        description: 'Clickable button that triggers an action',
+        example: '',
+        validation: {
+            allowEmpty: true,
+            allowExpressions: false,
+        },
+        notes: [
+            'Triggers action when clicked',
+            'Does not store a value',
+            'Action defined in routing property',
+        ],
+    },
+    callout: {
+        type: 'special',
+        jsType: 'string',
+        description: 'Informational message box (warning, info, success, error)',
+        example: '',
+        validation: {
+            allowEmpty: true,
+            allowExpressions: false,
+        },
+        notes: [
+            'Display-only, no value stored',
+            'Used for warnings and hints',
+            'Style controlled by typeOptions',
+        ],
+    },
+    notice: {
+        type: 'special',
+        jsType: 'string',
+        description: 'Notice message displayed to user',
+        example: '',
+        validation: {
+            allowEmpty: true,
+            allowExpressions: false,
+        },
+        notes: ['Similar to callout', 'Display-only element', 'Provides contextual information'],
+    },
+    workflowSelector: {
+        type: 'special',
+        jsType: 'string',
+        description: 'Dropdown to select another workflow',
+        example: 'workflow-123',
+        examples: ['wf-abc', '{{ $json.workflowId }}'],
+        validation: {
+            allowEmpty: false,
+            allowExpressions: true,
+        },
+        notes: [
+            'Selects from available workflows',
+            'Returns workflow ID',
+            'Used in Execute Workflow node',
+        ],
+    },
+    curlImport: {
+        type: 'special',
+        jsType: 'string',
+        description: 'Import configuration from cURL command',
+        example: 'curl -X GET https://api.example.com/data',
+        validation: {
+            allowEmpty: true,
+            allowExpressions: false,
+        },
+        notes: [
+            'Parses cURL command to populate fields',
+            'Used in HTTP Request node',
+            'One-time import feature',
+        ],
+    },
+};
+exports.COMPLEX_TYPE_EXAMPLES = {
+    collection: {
+        basic: {
+            name: 'John Doe',
+            email: 'john@example.com',
+        },
+        nested: {
+            user: {
+                firstName: 'Jane',
+                lastName: 'Smith',
+            },
+            preferences: {
+                theme: 'dark',
+                notifications: true,
+            },
+        },
+        withExpressions: {
+            id: '{{ $json.userId }}',
+            timestamp: '{{ $now }}',
+            data: '{{ $json.payload }}',
+        },
+    },
+    fixedCollection: {
+        httpHeaders: {
+            headers: [
+                { name: 'Content-Type', value: 'application/json' },
+                { name: 'Authorization', value: 'Bearer {{ $credentials.token }}' },
+            ],
+        },
+        queryParameters: {
+            queryParameters: [
+                { name: 'page', value: '1' },
+                { name: 'limit', value: '100' },
+            ],
+        },
+        multipleCollections: {
+            headers: [{ name: 'Accept', value: 'application/json' }],
+            queryParameters: [{ name: 'filter', value: 'active' }],
+        },
+    },
+    filter: {
+        simple: {
+            conditions: [
+                {
+                    id: '1',
+                    leftValue: '{{ $json.status }}',
+                    operator: { type: 'string', operation: 'equals' },
+                    rightValue: 'active',
+                },
+            ],
+            combinator: 'and',
+        },
+        complex: {
+            conditions: [
+                {
+                    id: '1',
+                    leftValue: '{{ $json.age }}',
+                    operator: { type: 'number', operation: 'gt' },
+                    rightValue: 18,
+                },
+                {
+                    id: '2',
+                    leftValue: '{{ $json.country }}',
+                    operator: { type: 'string', operation: 'equals' },
+                    rightValue: 'US',
+                },
+            ],
+            combinator: 'and',
+        },
+    },
+    resourceMapper: {
+        autoMap: {
+            mappingMode: 'autoMapInputData',
+            value: {},
+        },
+        manual: {
+            mappingMode: 'defineBelow',
+            value: {
+                firstName: '{{ $json.first_name }}',
+                lastName: '{{ $json.last_name }}',
+                email: '{{ $json.email_address }}',
+                status: 'active',
+            },
+        },
+    },
+    assignmentCollection: {
+        basic: {
+            assignments: [
+                {
+                    id: '1',
+                    name: 'fullName',
+                    value: '{{ $json.firstName }} {{ $json.lastName }}',
+                    type: 'string',
+                },
+            ],
+        },
+        multiple: {
+            assignments: [
+                { id: '1', name: 'userName', value: '{{ $json.name }}', type: 'string' },
+                { id: '2', name: 'userAge', value: '{{ $json.age }}', type: 'number' },
+                { id: '3', name: 'isActive', value: true, type: 'boolean' },
+            ],
+        },
+    },
+};
+//# sourceMappingURL=type-structures.js.map

dist/database/database-adapter.d.ts

@@ -0,0 +1,33 @@
+export interface DatabaseAdapter {
+    prepare(sql: string): PreparedStatement;
+    exec(sql: string): void;
+    close(): void;
+    pragma(key: string, value?: any): any;
+    readonly inTransaction: boolean;
+    transaction<T>(fn: () => T): T;
+    checkFTS5Support(): boolean;
+}
+export interface PreparedStatement {
+    run(...params: any[]): RunResult;
+    get(...params: any[]): any;
+    all(...params: any[]): any[];
+    iterate(...params: any[]): IterableIterator<any>;
+    pluck(toggle?: boolean): this;
+    expand(toggle?: boolean): this;
+    raw(toggle?: boolean): this;
+    columns(): ColumnDefinition[];
+    bind(...params: any[]): this;
+}
+export interface RunResult {
+    changes: number;
+    lastInsertRowid: number | bigint;
+}
+export interface ColumnDefinition {
+    name: string;
+    column: string | null;
+    table: string | null;
+    database: string | null;
+    type: string | null;
+}
+export declare function createDatabaseAdapter(dbPath: string): Promise<DatabaseAdapter>;
+//# sourceMappingURL=database-adapter.d.ts.map

dist/database/database-adapter.d.ts.map

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dist/database/database-adapter.js

@@ -0,0 +1,420 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || (function () {
+    var ownKeys = function(o) {
+        ownKeys = Object.getOwnPropertyNames || function (o) {
+            var ar = [];
+            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
+            return ar;
+        };
+        return ownKeys(o);
+    };
+    return function (mod) {
+        if (mod && mod.__esModule) return mod;
+        var result = {};
+        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
+        __setModuleDefault(result, mod);
+        return result;
+    };
+})();
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createDatabaseAdapter = createDatabaseAdapter;
+const fs_1 = require("fs");
+const fsSync = __importStar(require("fs"));
+const path_1 = __importDefault(require("path"));
+const logger_1 = require("../utils/logger");
+async function createDatabaseAdapter(dbPath) {
+    if (process.env.MCP_MODE !== 'stdio') {
+        logger_1.logger.info(`Node.js version: ${process.version}`);
+    }
+    if (process.env.MCP_MODE !== 'stdio') {
+        logger_1.logger.info(`Platform: ${process.platform} ${process.arch}`);
+    }
+    try {
+        if (process.env.MCP_MODE !== 'stdio') {
+            logger_1.logger.info('Attempting to use better-sqlite3...');
+        }
+        const adapter = await createBetterSQLiteAdapter(dbPath);
+        if (process.env.MCP_MODE !== 'stdio') {
+            logger_1.logger.info('Successfully initialized better-sqlite3 adapter');
+        }
+        return adapter;
+    }
+    catch (error) {
+        const errorMessage = error instanceof Error ? error.message : String(error);
+        if (errorMessage.includes('NODE_MODULE_VERSION') || errorMessage.includes('was compiled against a different Node.js version')) {
+            if (process.env.MCP_MODE !== 'stdio') {
+                logger_1.logger.warn(`Node.js version mismatch detected. Better-sqlite3 was compiled for a different Node.js version.`);
+            }
+            if (process.env.MCP_MODE !== 'stdio') {
+                logger_1.logger.warn(`Current Node.js version: ${process.version}`);
+            }
+        }
+        if (process.env.MCP_MODE !== 'stdio') {
+            logger_1.logger.warn('Failed to initialize better-sqlite3, falling back to sql.js', error);
+        }
+        try {
+            const adapter = await createSQLJSAdapter(dbPath);
+            if (process.env.MCP_MODE !== 'stdio') {
+                logger_1.logger.info('Successfully initialized sql.js adapter (pure JavaScript, no native dependencies)');
+            }
+            return adapter;
+        }
+        catch (sqlJsError) {
+            if (process.env.MCP_MODE !== 'stdio') {
+                logger_1.logger.error('Failed to initialize sql.js adapter', sqlJsError);
+            }
+            throw new Error('Failed to initialize any database adapter');
+        }
+    }
+}
+async function createBetterSQLiteAdapter(dbPath) {
+    try {
+        const Database = require('better-sqlite3');
+        const db = new Database(dbPath);
+        return new BetterSQLiteAdapter(db);
+    }
+    catch (error) {
+        throw new Error(`Failed to create better-sqlite3 adapter: ${error}`);
+    }
+}
+async function createSQLJSAdapter(dbPath) {
+    let initSqlJs;
+    try {
+        initSqlJs = require('sql.js');
+    }
+    catch (error) {
+        logger_1.logger.error('Failed to load sql.js module:', error);
+        throw new Error('sql.js module not found. This might be an issue with npm package installation.');
+    }
+    const SQL = await initSqlJs({
+        locateFile: (file) => {
+            if (file.endsWith('.wasm')) {
+                const possiblePaths = [
+                    path_1.default.join(__dirname, '../../node_modules/sql.js/dist/', file),
+                    path_1.default.join(__dirname, '../../../sql.js/dist/', file),
+                    path_1.default.join(process.cwd(), 'node_modules/sql.js/dist/', file),
+                    path_1.default.join(path_1.default.dirname(require.resolve('sql.js')), '../dist/', file)
+                ];
+                for (const tryPath of possiblePaths) {
+                    if (fsSync.existsSync(tryPath)) {
+                        if (process.env.MCP_MODE !== 'stdio') {
+                            logger_1.logger.debug(`Found WASM file at: ${tryPath}`);
+                        }
+                        return tryPath;
+                    }
+                }
+                try {
+                    const wasmPath = require.resolve('sql.js/dist/sql-wasm.wasm');
+                    if (process.env.MCP_MODE !== 'stdio') {
+                        logger_1.logger.debug(`Found WASM file via require.resolve: ${wasmPath}`);
+                    }
+                    return wasmPath;
+                }
+                catch (e) {
+                    logger_1.logger.warn(`Could not find WASM file, using default path: ${file}`);
+                    return file;
+                }
+            }
+            return file;
+        }
+    });
+    let db;
+    try {
+        const data = await fs_1.promises.readFile(dbPath);
+        db = new SQL.Database(new Uint8Array(data));
+        logger_1.logger.info(`Loaded existing database from ${dbPath}`);
+    }
+    catch (error) {
+        db = new SQL.Database();
+        logger_1.logger.info(`Created new database at ${dbPath}`);
+    }
+    return new SQLJSAdapter(db, dbPath);
+}
+class BetterSQLiteAdapter {
+    constructor(db) {
+        this.db = db;
+    }
+    prepare(sql) {
+        const stmt = this.db.prepare(sql);
+        return new BetterSQLiteStatement(stmt);
+    }
+    exec(sql) {
+        this.db.exec(sql);
+    }
+    close() {
+        this.db.close();
+    }
+    pragma(key, value) {
+        return this.db.pragma(key, value);
+    }
+    get inTransaction() {
+        return this.db.inTransaction;
+    }
+    transaction(fn) {
+        return this.db.transaction(fn)();
+    }
+    checkFTS5Support() {
+        try {
+            this.exec("CREATE VIRTUAL TABLE IF NOT EXISTS test_fts5 USING fts5(content);");
+            this.exec("DROP TABLE IF EXISTS test_fts5;");
+            return true;
+        }
+        catch (error) {
+            return false;
+        }
+    }
+}
+class SQLJSAdapter {
+    constructor(db, dbPath) {
+        this.db = db;
+        this.dbPath = dbPath;
+        this.saveTimer = null;
+        this.closed = false;
+        const envInterval = process.env.SQLJS_SAVE_INTERVAL_MS;
+        this.saveIntervalMs = envInterval ? parseInt(envInterval, 10) : SQLJSAdapter.DEFAULT_SAVE_INTERVAL_MS;
+        if (isNaN(this.saveIntervalMs) || this.saveIntervalMs < 100 || this.saveIntervalMs > 60000) {
+            logger_1.logger.warn(`Invalid SQLJS_SAVE_INTERVAL_MS value: ${envInterval} (must be 100-60000ms), ` +
+                `using default ${SQLJSAdapter.DEFAULT_SAVE_INTERVAL_MS}ms`);
+            this.saveIntervalMs = SQLJSAdapter.DEFAULT_SAVE_INTERVAL_MS;
+        }
+        logger_1.logger.debug(`SQLJSAdapter initialized with save interval: ${this.saveIntervalMs}ms`);
+    }
+    prepare(sql) {
+        const stmt = this.db.prepare(sql);
+        return new SQLJSStatement(stmt, () => this.scheduleSave());
+    }
+    exec(sql) {
+        this.db.exec(sql);
+        this.scheduleSave();
+    }
+    close() {
+        if (this.closed) {
+            logger_1.logger.debug('SQLJSAdapter already closed, skipping');
+            return;
+        }
+        this.saveToFile();
+        if (this.saveTimer) {
+            clearTimeout(this.saveTimer);
+            this.saveTimer = null;
+        }
+        this.db.close();
+        this.closed = true;
+    }
+    pragma(key, value) {
+        if (key === 'journal_mode' && value === 'WAL') {
+            return 'memory';
+        }
+        return null;
+    }
+    get inTransaction() {
+        return false;
+    }
+    transaction(fn) {
+        try {
+            this.exec('BEGIN');
+            const result = fn();
+            this.exec('COMMIT');
+            return result;
+        }
+        catch (error) {
+            this.exec('ROLLBACK');
+            throw error;
+        }
+    }
+    checkFTS5Support() {
+        try {
+            this.exec("CREATE VIRTUAL TABLE IF NOT EXISTS test_fts5 USING fts5(content);");
+            this.exec("DROP TABLE IF EXISTS test_fts5;");
+            return true;
+        }
+        catch (error) {
+            return false;
+        }
+    }
+    scheduleSave() {
+        if (this.saveTimer) {
+            clearTimeout(this.saveTimer);
+        }
+        this.saveTimer = setTimeout(() => {
+            this.saveToFile();
+        }, this.saveIntervalMs);
+    }
+    saveToFile() {
+        try {
+            const data = this.db.export();
+            fsSync.writeFileSync(this.dbPath, data);
+            logger_1.logger.debug(`Database saved to ${this.dbPath}`);
+        }
+        catch (error) {
+            logger_1.logger.error('Failed to save database', error);
+        }
+    }
+}
+SQLJSAdapter.DEFAULT_SAVE_INTERVAL_MS = 5000;
+class BetterSQLiteStatement {
+    constructor(stmt) {
+        this.stmt = stmt;
+    }
+    run(...params) {
+        return this.stmt.run(...params);
+    }
+    get(...params) {
+        return this.stmt.get(...params);
+    }
+    all(...params) {
+        return this.stmt.all(...params);
+    }
+    iterate(...params) {
+        return this.stmt.iterate(...params);
+    }
+    pluck(toggle) {
+        this.stmt.pluck(toggle);
+        return this;
+    }
+    expand(toggle) {
+        this.stmt.expand(toggle);
+        return this;
+    }
+    raw(toggle) {
+        this.stmt.raw(toggle);
+        return this;
+    }
+    columns() {
+        return this.stmt.columns();
+    }
+    bind(...params) {
+        this.stmt.bind(...params);
+        return this;
+    }
+}
+class SQLJSStatement {
+    constructor(stmt, onModify) {
+        this.stmt = stmt;
+        this.onModify = onModify;
+        this.boundParams = null;
+    }
+    run(...params) {
+        try {
+            if (params.length > 0) {
+                this.bindParams(params);
+                if (this.boundParams) {
+                    this.stmt.bind(this.boundParams);
+                }
+            }
+            this.stmt.run();
+            this.onModify();
+            return {
+                changes: 1,
+                lastInsertRowid: 0
+            };
+        }
+        catch (error) {
+            this.stmt.reset();
+            throw error;
+        }
+    }
+    get(...params) {
+        try {
+            if (params.length > 0) {
+                this.bindParams(params);
+                if (this.boundParams) {
+                    this.stmt.bind(this.boundParams);
+                }
+            }
+            if (this.stmt.step()) {
+                const result = this.stmt.getAsObject();
+                this.stmt.reset();
+                return this.convertIntegerColumns(result);
+            }
+            this.stmt.reset();
+            return undefined;
+        }
+        catch (error) {
+            this.stmt.reset();
+            throw error;
+        }
+    }
+    all(...params) {
+        try {
+            if (params.length > 0) {
+                this.bindParams(params);
+                if (this.boundParams) {
+                    this.stmt.bind(this.boundParams);
+                }
+            }
+            const results = [];
+            while (this.stmt.step()) {
+                results.push(this.convertIntegerColumns(this.stmt.getAsObject()));
+            }
+            this.stmt.reset();
+            return results;
+        }
+        catch (error) {
+            this.stmt.reset();
+            throw error;
+        }
+    }
+    iterate(...params) {
+        return this.all(...params)[Symbol.iterator]();
+    }
+    pluck(toggle) {
+        return this;
+    }
+    expand(toggle) {
+        return this;
+    }
+    raw(toggle) {
+        return this;
+    }
+    columns() {
+        return [];
+    }
+    bind(...params) {
+        this.bindParams(params);
+        return this;
+    }
+    bindParams(params) {
+        if (params.length === 0) {
+            this.boundParams = null;
+            return;
+        }
+        if (params.length === 1 && typeof params[0] === 'object' && !Array.isArray(params[0]) && params[0] !== null) {
+            this.boundParams = params[0];
+        }
+        else {
+            this.boundParams = params.map(p => p === undefined ? null : p);
+        }
+    }
+    convertIntegerColumns(row) {
+        if (!row)
+            return row;
+        const integerColumns = ['is_ai_tool', 'is_trigger', 'is_webhook', 'is_versioned'];
+        const converted = { ...row };
+        for (const col of integerColumns) {
+            if (col in converted && typeof converted[col] === 'string') {
+                converted[col] = parseInt(converted[col], 10);
+            }
+        }
+        return converted;
+    }
+}
+//# sourceMappingURL=database-adapter.js.map

dist/database/node-repository.d.ts

@@ -0,0 +1,95 @@
+import { DatabaseAdapter } from './database-adapter';
+import { ParsedNode } from '../parsers/node-parser';
+import { SQLiteStorageService } from '../services/sqlite-storage-service';
+export declare class NodeRepository {
+    private db;
+    constructor(dbOrService: DatabaseAdapter | SQLiteStorageService);
+    saveNode(node: ParsedNode): void;
+    getNode(nodeType: string): any;
+    getAITools(): any[];
+    private safeJsonParse;
+    upsertNode(node: ParsedNode): void;
+    getNodeByType(nodeType: string): any;
+    getNodesByCategory(category: string): any[];
+    searchNodes(query: string, mode?: 'OR' | 'AND' | 'FUZZY', limit?: number): any[];
+    getAllNodes(limit?: number): any[];
+    getNodeCount(): number;
+    getAIToolNodes(): any[];
+    getToolVariant(baseNodeType: string): any | null;
+    getBaseNodeForToolVariant(toolNodeType: string): any | null;
+    getToolVariants(): any[];
+    getToolVariantCount(): number;
+    getNodesByPackage(packageName: string): any[];
+    searchNodeProperties(nodeType: string, query: string, maxResults?: number): any[];
+    private parseNodeRow;
+    getNodeOperations(nodeType: string, resource?: string): any[];
+    getNodeResources(nodeType: string): any[];
+    getOperationsForResource(nodeType: string, resource: string): any[];
+    getAllOperations(): Map<string, any[]>;
+    getAllResources(): Map<string, any[]>;
+    getNodePropertyDefaults(nodeType: string): Record<string, any>;
+    getDefaultOperationForResource(nodeType: string, resource?: string): string | undefined;
+    saveNodeVersion(versionData: {
+        nodeType: string;
+        version: string;
+        packageName: string;
+        displayName: string;
+        description?: string;
+        category?: string;
+        isCurrentMax?: boolean;
+        propertiesSchema?: any;
+        operations?: any;
+        credentialsRequired?: any;
+        outputs?: any;
+        minimumN8nVersion?: string;
+        breakingChanges?: any[];
+        deprecatedProperties?: string[];
+        addedProperties?: string[];
+        releasedAt?: Date;
+    }): void;
+    getNodeVersions(nodeType: string): any[];
+    getLatestNodeVersion(nodeType: string): any | null;
+    getNodeVersion(nodeType: string, version: string): any | null;
+    savePropertyChange(changeData: {
+        nodeType: string;
+        fromVersion: string;
+        toVersion: string;
+        propertyName: string;
+        changeType: 'added' | 'removed' | 'renamed' | 'type_changed' | 'requirement_changed' | 'default_changed';
+        isBreaking?: boolean;
+        oldValue?: string;
+        newValue?: string;
+        migrationHint?: string;
+        autoMigratable?: boolean;
+        migrationStrategy?: any;
+        severity?: 'LOW' | 'MEDIUM' | 'HIGH';
+    }): void;
+    getPropertyChanges(nodeType: string, fromVersion: string, toVersion: string): any[];
+    getBreakingChanges(nodeType: string, fromVersion: string, toVersion?: string): any[];
+    getAutoMigratableChanges(nodeType: string, fromVersion: string, toVersion: string): any[];
+    hasVersionUpgradePath(nodeType: string, fromVersion: string, toVersion: string): boolean;
+    getVersionedNodesCount(): number;
+    private parseNodeVersionRow;
+    private parsePropertyChangeRow;
+    createWorkflowVersion(data: {
+        workflowId: string;
+        versionNumber: number;
+        workflowName: string;
+        workflowSnapshot: any;
+        trigger: 'partial_update' | 'full_update' | 'autofix';
+        operations?: any[];
+        fixTypes?: string[];
+        metadata?: any;
+    }): number;
+    getWorkflowVersions(workflowId: string, limit?: number): any[];
+    getWorkflowVersion(versionId: number): any | null;
+    getLatestWorkflowVersion(workflowId: string): any | null;
+    deleteWorkflowVersion(versionId: number): void;
+    deleteWorkflowVersionsByWorkflowId(workflowId: string): number;
+    pruneWorkflowVersions(workflowId: string, keepCount: number): number;
+    truncateWorkflowVersions(): number;
+    getWorkflowVersionCount(workflowId: string): number;
+    getVersionStorageStats(): any;
+    private parseWorkflowVersionRow;
+}
+//# sourceMappingURL=node-repository.d.ts.map

dist/database/node-repository.d.ts.map

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dist/database/node-repository.js

@@ -0,0 +1,641 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.NodeRepository = void 0;
+const sqlite_storage_service_1 = require("../services/sqlite-storage-service");
+const node_type_normalizer_1 = require("../utils/node-type-normalizer");
+class NodeRepository {
+    constructor(dbOrService) {
+        if (dbOrService instanceof sqlite_storage_service_1.SQLiteStorageService) {
+            this.db = dbOrService.db;
+            return;
+        }
+        this.db = dbOrService;
+    }
+    saveNode(node) {
+        const stmt = this.db.prepare(`
+      INSERT OR REPLACE INTO nodes (
+        node_type, package_name, display_name, description,
+        category, development_style, is_ai_tool, is_trigger,
+        is_webhook, is_versioned, is_tool_variant, tool_variant_of,
+        has_tool_variant, version, documentation,
+        properties_schema, operations, credentials_required,
+        outputs, output_names
+      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+    `);
+        stmt.run(node.nodeType, node.packageName, node.displayName, node.description, node.category, node.style, node.isAITool ? 1 : 0, node.isTrigger ? 1 : 0, node.isWebhook ? 1 : 0, node.isVersioned ? 1 : 0, node.isToolVariant ? 1 : 0, node.toolVariantOf || null, node.hasToolVariant ? 1 : 0, node.version, node.documentation || null, JSON.stringify(node.properties, null, 2), JSON.stringify(node.operations, null, 2), JSON.stringify(node.credentials, null, 2), node.outputs ? JSON.stringify(node.outputs, null, 2) : null, node.outputNames ? JSON.stringify(node.outputNames, null, 2) : null);
+    }
+    getNode(nodeType) {
+        const normalizedType = node_type_normalizer_1.NodeTypeNormalizer.normalizeToFullForm(nodeType);
+        const row = this.db.prepare(`
+      SELECT * FROM nodes WHERE node_type = ?
+    `).get(normalizedType);
+        if (!row && normalizedType !== nodeType) {
+            const originalRow = this.db.prepare(`
+        SELECT * FROM nodes WHERE node_type = ?
+      `).get(nodeType);
+            if (originalRow) {
+                return this.parseNodeRow(originalRow);
+            }
+        }
+        if (!row)
+            return null;
+        return this.parseNodeRow(row);
+    }
+    getAITools() {
+        const rows = this.db.prepare(`
+      SELECT node_type, display_name, description, package_name
+      FROM nodes 
+      WHERE is_ai_tool = 1
+      ORDER BY display_name
+    `).all();
+        return rows.map(row => ({
+            nodeType: row.node_type,
+            displayName: row.display_name,
+            description: row.description,
+            package: row.package_name
+        }));
+    }
+    safeJsonParse(json, defaultValue) {
+        try {
+            return JSON.parse(json);
+        }
+        catch {
+            return defaultValue;
+        }
+    }
+    upsertNode(node) {
+        this.saveNode(node);
+    }
+    getNodeByType(nodeType) {
+        return this.getNode(nodeType);
+    }
+    getNodesByCategory(category) {
+        const rows = this.db.prepare(`
+      SELECT * FROM nodes WHERE category = ?
+      ORDER BY display_name
+    `).all(category);
+        return rows.map(row => this.parseNodeRow(row));
+    }
+    searchNodes(query, mode = 'OR', limit = 20) {
+        let sql = '';
+        const params = [];
+        if (mode === 'FUZZY') {
+            sql = `
+        SELECT * FROM nodes 
+        WHERE node_type LIKE ? OR display_name LIKE ? OR description LIKE ?
+        ORDER BY display_name
+        LIMIT ?
+      `;
+            const fuzzyQuery = `%${query}%`;
+            params.push(fuzzyQuery, fuzzyQuery, fuzzyQuery, limit);
+        }
+        else {
+            const words = query.split(/\s+/).filter(w => w.length > 0);
+            const conditions = words.map(() => '(node_type LIKE ? OR display_name LIKE ? OR description LIKE ?)');
+            const operator = mode === 'AND' ? ' AND ' : ' OR ';
+            sql = `
+        SELECT * FROM nodes 
+        WHERE ${conditions.join(operator)}
+        ORDER BY display_name
+        LIMIT ?
+      `;
+            for (const word of words) {
+                const searchTerm = `%${word}%`;
+                params.push(searchTerm, searchTerm, searchTerm);
+            }
+            params.push(limit);
+        }
+        const rows = this.db.prepare(sql).all(...params);
+        return rows.map(row => this.parseNodeRow(row));
+    }
+    getAllNodes(limit) {
+        let sql = 'SELECT * FROM nodes ORDER BY display_name';
+        if (limit) {
+            sql += ` LIMIT ${limit}`;
+        }
+        const rows = this.db.prepare(sql).all();
+        return rows.map(row => this.parseNodeRow(row));
+    }
+    getNodeCount() {
+        const result = this.db.prepare('SELECT COUNT(*) as count FROM nodes').get();
+        return result.count;
+    }
+    getAIToolNodes() {
+        return this.getAITools();
+    }
+    getToolVariant(baseNodeType) {
+        if (!baseNodeType || typeof baseNodeType !== 'string' || !baseNodeType.includes('.')) {
+            return null;
+        }
+        const toolNodeType = `${baseNodeType}Tool`;
+        return this.getNode(toolNodeType);
+    }
+    getBaseNodeForToolVariant(toolNodeType) {
+        const row = this.db.prepare(`
+      SELECT tool_variant_of FROM nodes WHERE node_type = ?
+    `).get(toolNodeType);
+        if (!row?.tool_variant_of)
+            return null;
+        return this.getNode(row.tool_variant_of);
+    }
+    getToolVariants() {
+        const rows = this.db.prepare(`
+      SELECT node_type, display_name, description, package_name, tool_variant_of
+      FROM nodes
+      WHERE is_tool_variant = 1
+      ORDER BY display_name
+    `).all();
+        return rows.map(row => ({
+            nodeType: row.node_type,
+            displayName: row.display_name,
+            description: row.description,
+            package: row.package_name,
+            toolVariantOf: row.tool_variant_of
+        }));
+    }
+    getToolVariantCount() {
+        const result = this.db.prepare('SELECT COUNT(*) as count FROM nodes WHERE is_tool_variant = 1').get();
+        return result.count;
+    }
+    getNodesByPackage(packageName) {
+        const rows = this.db.prepare(`
+      SELECT * FROM nodes WHERE package_name = ?
+      ORDER BY display_name
+    `).all(packageName);
+        return rows.map(row => this.parseNodeRow(row));
+    }
+    searchNodeProperties(nodeType, query, maxResults = 20) {
+        const node = this.getNode(nodeType);
+        if (!node || !node.properties)
+            return [];
+        const results = [];
+        const searchLower = query.toLowerCase();
+        function searchProperties(properties, path = []) {
+            for (const prop of properties) {
+                if (results.length >= maxResults)
+                    break;
+                const currentPath = [...path, prop.name || prop.displayName];
+                const pathString = currentPath.join('.');
+                if (prop.name?.toLowerCase().includes(searchLower) ||
+                    prop.displayName?.toLowerCase().includes(searchLower) ||
+                    prop.description?.toLowerCase().includes(searchLower)) {
+                    results.push({
+                        path: pathString,
+                        property: prop,
+                        description: prop.description
+                    });
+                }
+                if (prop.options) {
+                    searchProperties(prop.options, currentPath);
+                }
+            }
+        }
+        searchProperties(node.properties);
+        return results;
+    }
+    parseNodeRow(row) {
+        return {
+            nodeType: row.node_type,
+            displayName: row.display_name,
+            description: row.description,
+            category: row.category,
+            developmentStyle: row.development_style,
+            package: row.package_name,
+            isAITool: Number(row.is_ai_tool) === 1,
+            isTrigger: Number(row.is_trigger) === 1,
+            isWebhook: Number(row.is_webhook) === 1,
+            isVersioned: Number(row.is_versioned) === 1,
+            isToolVariant: Number(row.is_tool_variant) === 1,
+            toolVariantOf: row.tool_variant_of || null,
+            hasToolVariant: Number(row.has_tool_variant) === 1,
+            version: row.version,
+            properties: this.safeJsonParse(row.properties_schema, []),
+            operations: this.safeJsonParse(row.operations, []),
+            credentials: this.safeJsonParse(row.credentials_required, []),
+            hasDocumentation: !!row.documentation,
+            outputs: row.outputs ? this.safeJsonParse(row.outputs, null) : null,
+            outputNames: row.output_names ? this.safeJsonParse(row.output_names, null) : null
+        };
+    }
+    getNodeOperations(nodeType, resource) {
+        const node = this.getNode(nodeType);
+        if (!node)
+            return [];
+        const operations = [];
+        if (node.operations) {
+            if (Array.isArray(node.operations)) {
+                operations.push(...node.operations);
+            }
+            else if (typeof node.operations === 'object') {
+                if (resource && node.operations[resource]) {
+                    return node.operations[resource];
+                }
+                else {
+                    Object.values(node.operations).forEach(ops => {
+                        if (Array.isArray(ops)) {
+                            operations.push(...ops);
+                        }
+                    });
+                }
+            }
+        }
+        if (node.properties && Array.isArray(node.properties)) {
+            for (const prop of node.properties) {
+                if (prop.name === 'operation' && prop.options) {
+                    if (resource && prop.displayOptions?.show?.resource) {
+                        const allowedResources = Array.isArray(prop.displayOptions.show.resource)
+                            ? prop.displayOptions.show.resource
+                            : [prop.displayOptions.show.resource];
+                        if (!allowedResources.includes(resource)) {
+                            continue;
+                        }
+                    }
+                    operations.push(...prop.options);
+                }
+            }
+        }
+        return operations;
+    }
+    getNodeResources(nodeType) {
+        const node = this.getNode(nodeType);
+        if (!node || !node.properties)
+            return [];
+        const resources = [];
+        for (const prop of node.properties) {
+            if (prop.name === 'resource' && prop.options) {
+                resources.push(...prop.options);
+            }
+        }
+        return resources;
+    }
+    getOperationsForResource(nodeType, resource) {
+        const node = this.getNode(nodeType);
+        if (!node || !node.properties)
+            return [];
+        const operations = [];
+        for (const prop of node.properties) {
+            if (prop.name === 'operation' && prop.displayOptions?.show?.resource) {
+                const allowedResources = Array.isArray(prop.displayOptions.show.resource)
+                    ? prop.displayOptions.show.resource
+                    : [prop.displayOptions.show.resource];
+                if (allowedResources.includes(resource) && prop.options) {
+                    operations.push(...prop.options);
+                }
+            }
+        }
+        return operations;
+    }
+    getAllOperations() {
+        const allOperations = new Map();
+        const nodes = this.getAllNodes();
+        for (const node of nodes) {
+            const operations = this.getNodeOperations(node.nodeType);
+            if (operations.length > 0) {
+                allOperations.set(node.nodeType, operations);
+            }
+        }
+        return allOperations;
+    }
+    getAllResources() {
+        const allResources = new Map();
+        const nodes = this.getAllNodes();
+        for (const node of nodes) {
+            const resources = this.getNodeResources(node.nodeType);
+            if (resources.length > 0) {
+                allResources.set(node.nodeType, resources);
+            }
+        }
+        return allResources;
+    }
+    getNodePropertyDefaults(nodeType) {
+        try {
+            const node = this.getNode(nodeType);
+            if (!node || !node.properties)
+                return {};
+            const defaults = {};
+            for (const prop of node.properties) {
+                if (prop.name && prop.default !== undefined) {
+                    defaults[prop.name] = prop.default;
+                }
+            }
+            return defaults;
+        }
+        catch (error) {
+            console.error(`Error getting property defaults for ${nodeType}:`, error);
+            return {};
+        }
+    }
+    getDefaultOperationForResource(nodeType, resource) {
+        try {
+            const node = this.getNode(nodeType);
+            if (!node || !node.properties)
+                return undefined;
+            for (const prop of node.properties) {
+                if (prop.name === 'operation') {
+                    if (resource && prop.displayOptions?.show?.resource) {
+                        const resourceDep = prop.displayOptions.show.resource;
+                        if (!Array.isArray(resourceDep) && typeof resourceDep !== 'string') {
+                            continue;
+                        }
+                        const allowedResources = Array.isArray(resourceDep)
+                            ? resourceDep
+                            : [resourceDep];
+                        if (!allowedResources.includes(resource)) {
+                            continue;
+                        }
+                    }
+                    if (prop.default !== undefined) {
+                        return prop.default;
+                    }
+                    if (prop.options && Array.isArray(prop.options) && prop.options.length > 0) {
+                        const firstOption = prop.options[0];
+                        return typeof firstOption === 'string' ? firstOption : firstOption.value;
+                    }
+                }
+            }
+        }
+        catch (error) {
+            console.error(`Error getting default operation for ${nodeType}:`, error);
+            return undefined;
+        }
+        return undefined;
+    }
+    saveNodeVersion(versionData) {
+        const stmt = this.db.prepare(`
+      INSERT OR REPLACE INTO node_versions (
+        node_type, version, package_name, display_name, description,
+        category, is_current_max, properties_schema, operations,
+        credentials_required, outputs, minimum_n8n_version,
+        breaking_changes, deprecated_properties, added_properties,
+        released_at
+      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+    `);
+        stmt.run(versionData.nodeType, versionData.version, versionData.packageName, versionData.displayName, versionData.description || null, versionData.category || null, versionData.isCurrentMax ? 1 : 0, versionData.propertiesSchema ? JSON.stringify(versionData.propertiesSchema) : null, versionData.operations ? JSON.stringify(versionData.operations) : null, versionData.credentialsRequired ? JSON.stringify(versionData.credentialsRequired) : null, versionData.outputs ? JSON.stringify(versionData.outputs) : null, versionData.minimumN8nVersion || null, versionData.breakingChanges ? JSON.stringify(versionData.breakingChanges) : null, versionData.deprecatedProperties ? JSON.stringify(versionData.deprecatedProperties) : null, versionData.addedProperties ? JSON.stringify(versionData.addedProperties) : null, versionData.releasedAt || null);
+    }
+    getNodeVersions(nodeType) {
+        const normalizedType = node_type_normalizer_1.NodeTypeNormalizer.normalizeToFullForm(nodeType);
+        const rows = this.db.prepare(`
+      SELECT * FROM node_versions
+      WHERE node_type = ?
+      ORDER BY version DESC
+    `).all(normalizedType);
+        return rows.map(row => this.parseNodeVersionRow(row));
+    }
+    getLatestNodeVersion(nodeType) {
+        const normalizedType = node_type_normalizer_1.NodeTypeNormalizer.normalizeToFullForm(nodeType);
+        const row = this.db.prepare(`
+      SELECT * FROM node_versions
+      WHERE node_type = ? AND is_current_max = 1
+      LIMIT 1
+    `).get(normalizedType);
+        if (!row)
+            return null;
+        return this.parseNodeVersionRow(row);
+    }
+    getNodeVersion(nodeType, version) {
+        const normalizedType = node_type_normalizer_1.NodeTypeNormalizer.normalizeToFullForm(nodeType);
+        const row = this.db.prepare(`
+      SELECT * FROM node_versions
+      WHERE node_type = ? AND version = ?
+    `).get(normalizedType, version);
+        if (!row)
+            return null;
+        return this.parseNodeVersionRow(row);
+    }
+    savePropertyChange(changeData) {
+        const stmt = this.db.prepare(`
+      INSERT INTO version_property_changes (
+        node_type, from_version, to_version, property_name, change_type,
+        is_breaking, old_value, new_value, migration_hint, auto_migratable,
+        migration_strategy, severity
+      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+    `);
+        stmt.run(changeData.nodeType, changeData.fromVersion, changeData.toVersion, changeData.propertyName, changeData.changeType, changeData.isBreaking ? 1 : 0, changeData.oldValue || null, changeData.newValue || null, changeData.migrationHint || null, changeData.autoMigratable ? 1 : 0, changeData.migrationStrategy ? JSON.stringify(changeData.migrationStrategy) : null, changeData.severity || 'MEDIUM');
+    }
+    getPropertyChanges(nodeType, fromVersion, toVersion) {
+        const normalizedType = node_type_normalizer_1.NodeTypeNormalizer.normalizeToFullForm(nodeType);
+        const rows = this.db.prepare(`
+      SELECT * FROM version_property_changes
+      WHERE node_type = ? AND from_version = ? AND to_version = ?
+      ORDER BY severity DESC, property_name
+    `).all(normalizedType, fromVersion, toVersion);
+        return rows.map(row => this.parsePropertyChangeRow(row));
+    }
+    getBreakingChanges(nodeType, fromVersion, toVersion) {
+        const normalizedType = node_type_normalizer_1.NodeTypeNormalizer.normalizeToFullForm(nodeType);
+        let sql = `
+      SELECT * FROM version_property_changes
+      WHERE node_type = ? AND is_breaking = 1
+    `;
+        const params = [normalizedType];
+        if (toVersion) {
+            sql += ` AND from_version >= ? AND to_version <= ?`;
+            params.push(fromVersion, toVersion);
+        }
+        else {
+            sql += ` AND from_version >= ?`;
+            params.push(fromVersion);
+        }
+        sql += ` ORDER BY from_version, to_version, severity DESC`;
+        const rows = this.db.prepare(sql).all(...params);
+        return rows.map(row => this.parsePropertyChangeRow(row));
+    }
+    getAutoMigratableChanges(nodeType, fromVersion, toVersion) {
+        const normalizedType = node_type_normalizer_1.NodeTypeNormalizer.normalizeToFullForm(nodeType);
+        const rows = this.db.prepare(`
+      SELECT * FROM version_property_changes
+      WHERE node_type = ?
+        AND from_version = ?
+        AND to_version = ?
+        AND auto_migratable = 1
+      ORDER BY severity DESC
+    `).all(normalizedType, fromVersion, toVersion);
+        return rows.map(row => this.parsePropertyChangeRow(row));
+    }
+    hasVersionUpgradePath(nodeType, fromVersion, toVersion) {
+        const versions = this.getNodeVersions(nodeType);
+        if (versions.length === 0)
+            return false;
+        const fromExists = versions.some(v => v.version === fromVersion);
+        const toExists = versions.some(v => v.version === toVersion);
+        return fromExists && toExists;
+    }
+    getVersionedNodesCount() {
+        const result = this.db.prepare(`
+      SELECT COUNT(DISTINCT node_type) as count
+      FROM node_versions
+    `).get();
+        return result.count;
+    }
+    parseNodeVersionRow(row) {
+        return {
+            id: row.id,
+            nodeType: row.node_type,
+            version: row.version,
+            packageName: row.package_name,
+            displayName: row.display_name,
+            description: row.description,
+            category: row.category,
+            isCurrentMax: Number(row.is_current_max) === 1,
+            propertiesSchema: row.properties_schema ? this.safeJsonParse(row.properties_schema, []) : null,
+            operations: row.operations ? this.safeJsonParse(row.operations, []) : null,
+            credentialsRequired: row.credentials_required ? this.safeJsonParse(row.credentials_required, []) : null,
+            outputs: row.outputs ? this.safeJsonParse(row.outputs, null) : null,
+            minimumN8nVersion: row.minimum_n8n_version,
+            breakingChanges: row.breaking_changes ? this.safeJsonParse(row.breaking_changes, []) : [],
+            deprecatedProperties: row.deprecated_properties ? this.safeJsonParse(row.deprecated_properties, []) : [],
+            addedProperties: row.added_properties ? this.safeJsonParse(row.added_properties, []) : [],
+            releasedAt: row.released_at,
+            createdAt: row.created_at
+        };
+    }
+    parsePropertyChangeRow(row) {
+        return {
+            id: row.id,
+            nodeType: row.node_type,
+            fromVersion: row.from_version,
+            toVersion: row.to_version,
+            propertyName: row.property_name,
+            changeType: row.change_type,
+            isBreaking: Number(row.is_breaking) === 1,
+            oldValue: row.old_value,
+            newValue: row.new_value,
+            migrationHint: row.migration_hint,
+            autoMigratable: Number(row.auto_migratable) === 1,
+            migrationStrategy: row.migration_strategy ? this.safeJsonParse(row.migration_strategy, null) : null,
+            severity: row.severity,
+            createdAt: row.created_at
+        };
+    }
+    createWorkflowVersion(data) {
+        const stmt = this.db.prepare(`
+      INSERT INTO workflow_versions (
+        workflow_id, version_number, workflow_name, workflow_snapshot,
+        trigger, operations, fix_types, metadata
+      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+    `);
+        const result = stmt.run(data.workflowId, data.versionNumber, data.workflowName, JSON.stringify(data.workflowSnapshot), data.trigger, data.operations ? JSON.stringify(data.operations) : null, data.fixTypes ? JSON.stringify(data.fixTypes) : null, data.metadata ? JSON.stringify(data.metadata) : null);
+        return result.lastInsertRowid;
+    }
+    getWorkflowVersions(workflowId, limit) {
+        let sql = `
+      SELECT * FROM workflow_versions
+      WHERE workflow_id = ?
+      ORDER BY version_number DESC
+    `;
+        if (limit) {
+            sql += ` LIMIT ?`;
+            const rows = this.db.prepare(sql).all(workflowId, limit);
+            return rows.map(row => this.parseWorkflowVersionRow(row));
+        }
+        const rows = this.db.prepare(sql).all(workflowId);
+        return rows.map(row => this.parseWorkflowVersionRow(row));
+    }
+    getWorkflowVersion(versionId) {
+        const row = this.db.prepare(`
+      SELECT * FROM workflow_versions WHERE id = ?
+    `).get(versionId);
+        if (!row)
+            return null;
+        return this.parseWorkflowVersionRow(row);
+    }
+    getLatestWorkflowVersion(workflowId) {
+        const row = this.db.prepare(`
+      SELECT * FROM workflow_versions
+      WHERE workflow_id = ?
+      ORDER BY version_number DESC
+      LIMIT 1
+    `).get(workflowId);
+        if (!row)
+            return null;
+        return this.parseWorkflowVersionRow(row);
+    }
+    deleteWorkflowVersion(versionId) {
+        this.db.prepare(`
+      DELETE FROM workflow_versions WHERE id = ?
+    `).run(versionId);
+    }
+    deleteWorkflowVersionsByWorkflowId(workflowId) {
+        const result = this.db.prepare(`
+      DELETE FROM workflow_versions WHERE workflow_id = ?
+    `).run(workflowId);
+        return result.changes;
+    }
+    pruneWorkflowVersions(workflowId, keepCount) {
+        const versions = this.db.prepare(`
+      SELECT id FROM workflow_versions
+      WHERE workflow_id = ?
+      ORDER BY version_number DESC
+    `).all(workflowId);
+        if (versions.length <= keepCount) {
+            return 0;
+        }
+        const idsToDelete = versions.slice(keepCount).map(v => v.id);
+        if (idsToDelete.length === 0) {
+            return 0;
+        }
+        const placeholders = idsToDelete.map(() => '?').join(',');
+        const result = this.db.prepare(`
+      DELETE FROM workflow_versions WHERE id IN (${placeholders})
+    `).run(...idsToDelete);
+        return result.changes;
+    }
+    truncateWorkflowVersions() {
+        const result = this.db.prepare(`
+      DELETE FROM workflow_versions
+    `).run();
+        return result.changes;
+    }
+    getWorkflowVersionCount(workflowId) {
+        const result = this.db.prepare(`
+      SELECT COUNT(*) as count FROM workflow_versions WHERE workflow_id = ?
+    `).get(workflowId);
+        return result.count;
+    }
+    getVersionStorageStats() {
+        const totalResult = this.db.prepare(`
+      SELECT COUNT(*) as count FROM workflow_versions
+    `).get();
+        const sizeResult = this.db.prepare(`
+      SELECT SUM(LENGTH(workflow_snapshot)) as total_size FROM workflow_versions
+    `).get();
+        const byWorkflow = this.db.prepare(`
+      SELECT
+        workflow_id,
+        workflow_name,
+        COUNT(*) as version_count,
+        SUM(LENGTH(workflow_snapshot)) as total_size,
+        MAX(created_at) as last_backup
+      FROM workflow_versions
+      GROUP BY workflow_id
+      ORDER BY version_count DESC
+    `).all();
+        return {
+            totalVersions: totalResult.count,
+            totalSize: sizeResult.total_size || 0,
+            byWorkflow: byWorkflow.map(row => ({
+                workflowId: row.workflow_id,
+                workflowName: row.workflow_name,
+                versionCount: row.version_count,
+                totalSize: row.total_size,
+                lastBackup: row.last_backup
+            }))
+        };
+    }
+    parseWorkflowVersionRow(row) {
+        return {
+            id: row.id,
+            workflowId: row.workflow_id,
+            versionNumber: row.version_number,
+            workflowName: row.workflow_name,
+            workflowSnapshot: this.safeJsonParse(row.workflow_snapshot, null),
+            trigger: row.trigger,
+            operations: row.operations ? this.safeJsonParse(row.operations, null) : null,
+            fixTypes: row.fix_types ? this.safeJsonParse(row.fix_types, null) : null,
+            metadata: row.metadata ? this.safeJsonParse(row.metadata, null) : null,
+            createdAt: row.created_at
+        };
+    }
+}
+exports.NodeRepository = NodeRepository;
+//# sourceMappingURL=node-repository.js.map

dist/errors/validation-service-error.d.ts

@@ -0,0 +1,10 @@
+export declare class ValidationServiceError extends Error {
+    readonly nodeType?: string | undefined;
+    readonly property?: string | undefined;
+    readonly cause?: Error | undefined;
+    constructor(message: string, nodeType?: string | undefined, property?: string | undefined, cause?: Error | undefined);
+    static jsonParseError(nodeType: string, cause: Error): ValidationServiceError;
+    static nodeNotFound(nodeType: string): ValidationServiceError;
+    static dataExtractionError(nodeType: string, dataType: string, cause?: Error): ValidationServiceError;
+}
+//# sourceMappingURL=validation-service-error.d.ts.map

dist/errors/validation-service-error.d.ts.map

@@ -0,0 +1 @@
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dist/errors/validation-service-error.js

@@ -0,0 +1,26 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ValidationServiceError = void 0;
+class ValidationServiceError extends Error {
+    constructor(message, nodeType, property, cause) {
+        super(message);
+        this.nodeType = nodeType;
+        this.property = property;
+        this.cause = cause;
+        this.name = 'ValidationServiceError';
+        if (Error.captureStackTrace) {
+            Error.captureStackTrace(this, ValidationServiceError);
+        }
+    }
+    static jsonParseError(nodeType, cause) {
+        return new ValidationServiceError(`Failed to parse JSON data for node ${nodeType}`, nodeType, undefined, cause);
+    }
+    static nodeNotFound(nodeType) {
+        return new ValidationServiceError(`Node type ${nodeType} not found in repository`, nodeType);
+    }
+    static dataExtractionError(nodeType, dataType, cause) {
+        return new ValidationServiceError(`Failed to extract ${dataType} for node ${nodeType}`, nodeType, dataType, cause);
+    }
+}
+exports.ValidationServiceError = ValidationServiceError;
+//# sourceMappingURL=validation-service-error.js.map

dist/errors/validation-service-error.js.map

@@ -0,0 +1 @@
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dist/http-server-single-session.d.ts

@@ -0,0 +1,52 @@
+#!/usr/bin/env node
+import express from 'express';
+import { InstanceContext } from './types/instance-context';
+import { SessionState } from './types/session-state';
+export declare class SingleSessionHTTPServer {
+    private transports;
+    private servers;
+    private sessionMetadata;
+    private sessionContexts;
+    private contextSwitchLocks;
+    private session;
+    private consoleManager;
+    private expressServer;
+    private sessionTimeout;
+    private authToken;
+    private cleanupTimer;
+    constructor();
+    private startSessionCleanup;
+    private cleanupExpiredSessions;
+    private removeSession;
+    private getActiveSessionCount;
+    private canCreateSession;
+    private isValidSessionId;
+    private sanitizeErrorForClient;
+    private updateSessionAccess;
+    private switchSessionContext;
+    private performContextSwitch;
+    private getSessionMetrics;
+    private loadAuthToken;
+    private validateEnvironment;
+    handleRequest(req: express.Request, res: express.Response, instanceContext?: InstanceContext): Promise<void>;
+    private resetSessionSSE;
+    private isExpired;
+    private isSessionExpired;
+    start(): Promise<void>;
+    shutdown(): Promise<void>;
+    getSessionInfo(): {
+        active: boolean;
+        sessionId?: string;
+        age?: number;
+        sessions?: {
+            total: number;
+            active: number;
+            expired: number;
+            max: number;
+            sessionIds: string[];
+        };
+    };
+    exportSessionState(): SessionState[];
+    restoreSessionState(sessions: SessionState[]): number;
+}
+//# sourceMappingURL=http-server-single-session.d.ts.map

dist/http-server-single-session.d.ts.map

@@ -0,0 +1 @@
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dist/http-server.d.ts

@@ -0,0 +1,9 @@
+#!/usr/bin/env node
+export declare function loadAuthToken(): string | null;
+export declare function startFixedHTTPServer(): Promise<void>;
+declare module './mcp/server' {
+    interface N8NDocumentationMCPServer {
+        executeTool(name: string, args: any): Promise<any>;
+    }
+}
+//# sourceMappingURL=http-server.d.ts.map

dist/http-server.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"http-server.d.ts","sourceRoot":"","sources":["../src/http-server.ts"],"names":[],"mappings":";AA0CA,wBAAgB,aAAa,IAAI,MAAM,GAAG,IAAI,CAsB7C;AA+DD,wBAAsB,oBAAoB,kBA+dzC;AAGD,OAAO,QAAQ,cAAc,CAAC;IAC5B,UAAU,yBAAyB;QACjC,WAAW,CAAC,IAAI,EAAE,MAAM,EAAE,IAAI,EAAE,GAAG,GAAG,OAAO,CAAC,GAAG,CAAC,CAAC;KACpD;CACF"}

dist/http-server.js

@@ -0,0 +1,478 @@
+#!/usr/bin/env node
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.loadAuthToken = loadAuthToken;
+exports.startFixedHTTPServer = startFixedHTTPServer;
+const express_1 = __importDefault(require("express"));
+const tools_1 = require("./mcp/tools");
+const tools_n8n_manager_1 = require("./mcp/tools-n8n-manager");
+const server_1 = require("./mcp/server");
+const logger_1 = require("./utils/logger");
+const auth_1 = require("./utils/auth");
+const version_1 = require("./utils/version");
+const n8n_api_1 = require("./config/n8n-api");
+const dotenv_1 = __importDefault(require("dotenv"));
+const fs_1 = require("fs");
+const url_detector_1 = require("./utils/url-detector");
+const protocol_version_1 = require("./utils/protocol-version");
+dotenv_1.default.config();
+let expressServer;
+let authToken = null;
+function loadAuthToken() {
+    if (process.env.AUTH_TOKEN) {
+        logger_1.logger.info('Using AUTH_TOKEN from environment variable');
+        return process.env.AUTH_TOKEN;
+    }
+    if (process.env.AUTH_TOKEN_FILE) {
+        try {
+            const token = (0, fs_1.readFileSync)(process.env.AUTH_TOKEN_FILE, 'utf-8').trim();
+            logger_1.logger.info(`Loaded AUTH_TOKEN from file: ${process.env.AUTH_TOKEN_FILE}`);
+            return token;
+        }
+        catch (error) {
+            logger_1.logger.error(`Failed to read AUTH_TOKEN_FILE: ${process.env.AUTH_TOKEN_FILE}`, error);
+            console.error(`ERROR: Failed to read AUTH_TOKEN_FILE: ${process.env.AUTH_TOKEN_FILE}`);
+            console.error(error instanceof Error ? error.message : 'Unknown error');
+            return null;
+        }
+    }
+    return null;
+}
+function validateEnvironment() {
+    authToken = loadAuthToken();
+    if (!authToken || authToken.trim() === '') {
+        logger_1.logger.error('No authentication token found or token is empty');
+        console.error('ERROR: AUTH_TOKEN is required for HTTP mode and cannot be empty');
+        console.error('Set AUTH_TOKEN environment variable or AUTH_TOKEN_FILE pointing to a file containing the token');
+        console.error('Generate AUTH_TOKEN with: openssl rand -base64 32');
+        process.exit(1);
+    }
+    authToken = authToken.trim();
+    if (authToken.length < 32) {
+        logger_1.logger.warn('AUTH_TOKEN should be at least 32 characters for security');
+        console.warn('WARNING: AUTH_TOKEN should be at least 32 characters for security');
+    }
+    if (authToken === 'REPLACE_THIS_AUTH_TOKEN_32_CHARS_MIN_abcdefgh') {
+        logger_1.logger.warn('⚠️ SECURITY WARNING: Using default AUTH_TOKEN - CHANGE IMMEDIATELY!');
+        logger_1.logger.warn('Generate secure token with: openssl rand -base64 32');
+        if (process.env.MCP_MODE === 'http') {
+            console.warn('\n⚠️  SECURITY WARNING ⚠️');
+            console.warn('Using default AUTH_TOKEN - CHANGE IMMEDIATELY!');
+            console.warn('Generate secure token: openssl rand -base64 32');
+            console.warn('Update via Railway dashboard environment variables\n');
+        }
+    }
+}
+async function shutdown() {
+    logger_1.logger.info('Shutting down HTTP server...');
+    console.log('Shutting down HTTP server...');
+    if (expressServer) {
+        expressServer.close(() => {
+            logger_1.logger.info('HTTP server closed');
+            console.log('HTTP server closed');
+            process.exit(0);
+        });
+        setTimeout(() => {
+            logger_1.logger.error('Forced shutdown after timeout');
+            process.exit(1);
+        }, 10000);
+    }
+    else {
+        process.exit(0);
+    }
+}
+async function startFixedHTTPServer() {
+    validateEnvironment();
+    const app = (0, express_1.default)();
+    const trustProxy = process.env.TRUST_PROXY ? Number(process.env.TRUST_PROXY) : 0;
+    if (trustProxy > 0) {
+        app.set('trust proxy', trustProxy);
+        logger_1.logger.info(`Trust proxy enabled with ${trustProxy} hop(s)`);
+    }
+    app.use((req, res, next) => {
+        res.setHeader('X-Content-Type-Options', 'nosniff');
+        res.setHeader('X-Frame-Options', 'DENY');
+        res.setHeader('X-XSS-Protection', '1; mode=block');
+        res.setHeader('Strict-Transport-Security', 'max-age=31536000; includeSubDomains');
+        next();
+    });
+    app.use((req, res, next) => {
+        const allowedOrigin = process.env.CORS_ORIGIN || '*';
+        res.setHeader('Access-Control-Allow-Origin', allowedOrigin);
+        res.setHeader('Access-Control-Allow-Methods', 'POST, GET, OPTIONS');
+        res.setHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization, Accept');
+        res.setHeader('Access-Control-Max-Age', '86400');
+        if (req.method === 'OPTIONS') {
+            res.sendStatus(204);
+            return;
+        }
+        next();
+    });
+    app.use((req, res, next) => {
+        logger_1.logger.info(`${req.method} ${req.path}`, {
+            ip: req.ip,
+            userAgent: req.get('user-agent'),
+            contentLength: req.get('content-length')
+        });
+        next();
+    });
+    const mcpServer = new server_1.N8NDocumentationMCPServer();
+    logger_1.logger.info('Created persistent MCP server instance');
+    app.get('/', (req, res) => {
+        const port = parseInt(process.env.PORT || '3000');
+        const host = process.env.HOST || '0.0.0.0';
+        const baseUrl = (0, url_detector_1.detectBaseUrl)(req, host, port);
+        const endpoints = (0, url_detector_1.formatEndpointUrls)(baseUrl);
+        res.json({
+            name: 'n8n Documentation MCP Server',
+            version: version_1.PROJECT_VERSION,
+            description: 'Model Context Protocol server providing comprehensive n8n node documentation and workflow management',
+            endpoints: {
+                health: {
+                    url: endpoints.health,
+                    method: 'GET',
+                    description: 'Health check and status information'
+                },
+                mcp: {
+                    url: endpoints.mcp,
+                    method: 'GET/POST',
+                    description: 'MCP endpoint - GET for info, POST for JSON-RPC'
+                }
+            },
+            authentication: {
+                type: 'Bearer Token',
+                header: 'Authorization: Bearer <token>',
+                required_for: ['POST /mcp']
+            },
+            documentation: 'https://github.com/czlonkowski/n8n-mcp'
+        });
+    });
+    app.get('/health', (req, res) => {
+        res.json({
+            status: 'ok',
+            mode: 'http-fixed',
+            version: version_1.PROJECT_VERSION,
+            uptime: Math.floor(process.uptime()),
+            memory: {
+                used: Math.round(process.memoryUsage().heapUsed / 1024 / 1024),
+                total: Math.round(process.memoryUsage().heapTotal / 1024 / 1024),
+                unit: 'MB'
+            },
+            timestamp: new Date().toISOString()
+        });
+    });
+    app.get('/version', (req, res) => {
+        res.json({
+            version: version_1.PROJECT_VERSION,
+            buildTime: new Date().toISOString(),
+            tools: tools_1.n8nDocumentationToolsFinal.map(t => t.name),
+            commit: process.env.GIT_COMMIT || 'unknown'
+        });
+    });
+    app.get('/test-tools', async (req, res) => {
+        try {
+            const result = await mcpServer.executeTool('get_node_essentials', { nodeType: 'nodes-base.httpRequest' });
+            res.json({ status: 'ok', hasData: !!result, toolCount: tools_1.n8nDocumentationToolsFinal.length });
+        }
+        catch (error) {
+            res.json({ status: 'error', message: error instanceof Error ? error.message : 'Unknown error' });
+        }
+    });
+    app.get('/mcp', (req, res) => {
+        res.json({
+            description: 'n8n Documentation MCP Server',
+            version: version_1.PROJECT_VERSION,
+            endpoints: {
+                mcp: {
+                    method: 'POST',
+                    path: '/mcp',
+                    description: 'Main MCP JSON-RPC endpoint',
+                    authentication: 'Bearer token required'
+                },
+                health: {
+                    method: 'GET',
+                    path: '/health',
+                    description: 'Health check endpoint',
+                    authentication: 'None'
+                },
+                root: {
+                    method: 'GET',
+                    path: '/',
+                    description: 'API information',
+                    authentication: 'None'
+                }
+            },
+            documentation: 'https://github.com/czlonkowski/n8n-mcp'
+        });
+    });
+    app.post('/mcp', async (req, res) => {
+        const startTime = Date.now();
+        const authHeader = req.headers.authorization;
+        if (!authHeader) {
+            logger_1.logger.warn('Authentication failed: Missing Authorization header', {
+                ip: req.ip,
+                userAgent: req.get('user-agent'),
+                reason: 'no_auth_header'
+            });
+            res.status(401).json({
+                jsonrpc: '2.0',
+                error: {
+                    code: -32001,
+                    message: 'Unauthorized'
+                },
+                id: null
+            });
+            return;
+        }
+        if (!authHeader.startsWith('Bearer ')) {
+            logger_1.logger.warn('Authentication failed: Invalid Authorization header format (expected Bearer token)', {
+                ip: req.ip,
+                userAgent: req.get('user-agent'),
+                reason: 'invalid_auth_format',
+                headerPrefix: authHeader.substring(0, Math.min(authHeader.length, 10)) + '...'
+            });
+            res.status(401).json({
+                jsonrpc: '2.0',
+                error: {
+                    code: -32001,
+                    message: 'Unauthorized'
+                },
+                id: null
+            });
+            return;
+        }
+        const token = authHeader.slice(7).trim();
+        const isValidToken = authToken &&
+            auth_1.AuthManager.timingSafeCompare(token, authToken);
+        if (!isValidToken) {
+            logger_1.logger.warn('Authentication failed: Invalid token', {
+                ip: req.ip,
+                userAgent: req.get('user-agent'),
+                reason: 'invalid_token'
+            });
+            res.status(401).json({
+                jsonrpc: '2.0',
+                error: {
+                    code: -32001,
+                    message: 'Unauthorized'
+                },
+                id: null
+            });
+            return;
+        }
+        try {
+            let body = '';
+            req.on('data', chunk => {
+                body += chunk.toString();
+            });
+            req.on('end', async () => {
+                try {
+                    const jsonRpcRequest = JSON.parse(body);
+                    logger_1.logger.debug('Received JSON-RPC request:', { method: jsonRpcRequest.method });
+                    let response;
+                    switch (jsonRpcRequest.method) {
+                        case 'initialize':
+                            const negotiationResult = (0, protocol_version_1.negotiateProtocolVersion)(jsonRpcRequest.params?.protocolVersion, jsonRpcRequest.params?.clientInfo, req.get('user-agent'), req.headers);
+                            (0, protocol_version_1.logProtocolNegotiation)(negotiationResult, logger_1.logger, 'HTTP_SERVER_INITIALIZE');
+                            response = {
+                                jsonrpc: '2.0',
+                                result: {
+                                    protocolVersion: negotiationResult.version,
+                                    capabilities: {
+                                        tools: {},
+                                        resources: {}
+                                    },
+                                    serverInfo: {
+                                        name: 'n8n-documentation-mcp',
+                                        version: version_1.PROJECT_VERSION
+                                    }
+                                },
+                                id: jsonRpcRequest.id
+                            };
+                            break;
+                        case 'tools/list':
+                            const tools = [...tools_1.n8nDocumentationToolsFinal];
+                            if ((0, n8n_api_1.isN8nApiConfigured)()) {
+                                tools.push(...tools_n8n_manager_1.n8nManagementTools);
+                            }
+                            response = {
+                                jsonrpc: '2.0',
+                                result: {
+                                    tools
+                                },
+                                id: jsonRpcRequest.id
+                            };
+                            break;
+                        case 'tools/call':
+                            const toolName = jsonRpcRequest.params?.name;
+                            const toolArgs = jsonRpcRequest.params?.arguments || {};
+                            try {
+                                const result = await mcpServer.executeTool(toolName, toolArgs);
+                                let responseText = JSON.stringify(result, null, 2);
+                                const mcpResult = {
+                                    content: [
+                                        {
+                                            type: 'text',
+                                            text: responseText
+                                        }
+                                    ]
+                                };
+                                if (toolName.startsWith('validate_')) {
+                                    const resultSize = responseText.length;
+                                    if (resultSize > 1000000) {
+                                        logger_1.logger.warn(`Validation tool ${toolName} response is very large (${resultSize} chars). ` +
+                                            `Truncating for HTTP transport safety.`);
+                                        mcpResult.content[0].text = responseText.substring(0, 999000) +
+                                            '\n\n[Response truncated due to size limits]';
+                                    }
+                                    else {
+                                        mcpResult.structuredContent = result;
+                                    }
+                                }
+                                response = {
+                                    jsonrpc: '2.0',
+                                    result: mcpResult,
+                                    id: jsonRpcRequest.id
+                                };
+                            }
+                            catch (error) {
+                                response = {
+                                    jsonrpc: '2.0',
+                                    error: {
+                                        code: -32603,
+                                        message: `Error executing tool ${toolName}: ${error instanceof Error ? error.message : 'Unknown error'}`
+                                    },
+                                    id: jsonRpcRequest.id
+                                };
+                            }
+                            break;
+                        default:
+                            response = {
+                                jsonrpc: '2.0',
+                                error: {
+                                    code: -32601,
+                                    message: `Method not found: ${jsonRpcRequest.method}`
+                                },
+                                id: jsonRpcRequest.id
+                            };
+                    }
+                    res.setHeader('Content-Type', 'application/json');
+                    res.json(response);
+                    const duration = Date.now() - startTime;
+                    logger_1.logger.info('MCP request completed', {
+                        duration,
+                        method: jsonRpcRequest.method
+                    });
+                }
+                catch (error) {
+                    logger_1.logger.error('Error processing request:', error);
+                    res.status(400).json({
+                        jsonrpc: '2.0',
+                        error: {
+                            code: -32700,
+                            message: 'Parse error',
+                            data: error instanceof Error ? error.message : 'Unknown error'
+                        },
+                        id: null
+                    });
+                }
+            });
+        }
+        catch (error) {
+            logger_1.logger.error('MCP request error:', error);
+            if (!res.headersSent) {
+                res.status(500).json({
+                    jsonrpc: '2.0',
+                    error: {
+                        code: -32603,
+                        message: 'Internal server error',
+                        data: process.env.NODE_ENV === 'development'
+                            ? error.message
+                            : undefined
+                    },
+                    id: null
+                });
+            }
+        }
+    });
+    app.use((req, res) => {
+        res.status(404).json({
+            error: 'Not found',
+            message: `Cannot ${req.method} ${req.path}`
+        });
+    });
+    app.use((err, req, res, next) => {
+        logger_1.logger.error('Express error handler:', err);
+        if (!res.headersSent) {
+            res.status(500).json({
+                jsonrpc: '2.0',
+                error: {
+                    code: -32603,
+                    message: 'Internal server error',
+                    data: process.env.NODE_ENV === 'development' ? err.message : undefined
+                },
+                id: null
+            });
+        }
+    });
+    const port = parseInt(process.env.PORT || '3000');
+    const host = process.env.HOST || '0.0.0.0';
+    expressServer = app.listen(port, host, () => {
+        logger_1.logger.info(`n8n MCP Fixed HTTP Server started`, { port, host });
+        const baseUrl = (0, url_detector_1.getStartupBaseUrl)(host, port);
+        const endpoints = (0, url_detector_1.formatEndpointUrls)(baseUrl);
+        console.log(`n8n MCP Fixed HTTP Server running on ${host}:${port}`);
+        console.log(`Health check: ${endpoints.health}`);
+        console.log(`MCP endpoint: ${endpoints.mcp}`);
+        console.log('\nPress Ctrl+C to stop the server');
+        if (authToken === 'REPLACE_THIS_AUTH_TOKEN_32_CHARS_MIN_abcdefgh') {
+            setInterval(() => {
+                logger_1.logger.warn('⚠️ Still using default AUTH_TOKEN - security risk!');
+                if (process.env.MCP_MODE === 'http') {
+                    console.warn('⚠️ REMINDER: Still using default AUTH_TOKEN - please change it!');
+                }
+            }, 300000);
+        }
+        if (process.env.BASE_URL || process.env.PUBLIC_URL) {
+            console.log(`\nPublic URL configured: ${baseUrl}`);
+        }
+        else if (process.env.TRUST_PROXY && Number(process.env.TRUST_PROXY) > 0) {
+            console.log(`\nNote: TRUST_PROXY is enabled. URLs will be auto-detected from proxy headers.`);
+        }
+    });
+    expressServer.on('error', (error) => {
+        if (error.code === 'EADDRINUSE') {
+            logger_1.logger.error(`Port ${port} is already in use`);
+            console.error(`ERROR: Port ${port} is already in use`);
+            process.exit(1);
+        }
+        else {
+            logger_1.logger.error('Server error:', error);
+            console.error('Server error:', error);
+            process.exit(1);
+        }
+    });
+    process.on('SIGTERM', shutdown);
+    process.on('SIGINT', shutdown);
+    process.on('uncaughtException', (error) => {
+        logger_1.logger.error('Uncaught exception:', error);
+        console.error('Uncaught exception:', error);
+        shutdown();
+    });
+    process.on('unhandledRejection', (reason, promise) => {
+        logger_1.logger.error('Unhandled rejection:', reason);
+        console.error('Unhandled rejection at:', promise, 'reason:', reason);
+        shutdown();
+    });
+}
+if (typeof require !== 'undefined' && require.main === module) {
+    startFixedHTTPServer().catch(error => {
+        logger_1.logger.error('Failed to start Fixed HTTP server:', error);
+        console.error('Failed to start Fixed HTTP server:', error);
+        process.exit(1);
+    });
+}
+//# sourceMappingURL=http-server.js.map

dist/index.d.ts

@@ -0,0 +1,11 @@
+export { N8NMCPEngine, EngineHealth, EngineOptions } from './mcp-engine';
+export { SingleSessionHTTPServer } from './http-server-single-session';
+export { ConsoleManager } from './utils/console-manager';
+export { N8NDocumentationMCPServer } from './mcp/server';
+export type { InstanceContext } from './types/instance-context';
+export { validateInstanceContext, isInstanceContext } from './types/instance-context';
+export type { SessionState } from './types/session-state';
+export type { Tool, CallToolResult, ListToolsResult } from '@modelcontextprotocol/sdk/types.js';
+import N8NMCPEngine from './mcp-engine';
+export default N8NMCPEngine;
+//# sourceMappingURL=index.d.ts.map

dist/index.d.ts.map

@@ -0,0 +1 @@
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dist/index.js

@@ -0,0 +1,20 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isInstanceContext = exports.validateInstanceContext = exports.N8NDocumentationMCPServer = exports.ConsoleManager = exports.SingleSessionHTTPServer = exports.N8NMCPEngine = void 0;
+var mcp_engine_1 = require("./mcp-engine");
+Object.defineProperty(exports, "N8NMCPEngine", { enumerable: true, get: function () { return mcp_engine_1.N8NMCPEngine; } });
+var http_server_single_session_1 = require("./http-server-single-session");
+Object.defineProperty(exports, "SingleSessionHTTPServer", { enumerable: true, get: function () { return http_server_single_session_1.SingleSessionHTTPServer; } });
+var console_manager_1 = require("./utils/console-manager");
+Object.defineProperty(exports, "ConsoleManager", { enumerable: true, get: function () { return console_manager_1.ConsoleManager; } });
+var server_1 = require("./mcp/server");
+Object.defineProperty(exports, "N8NDocumentationMCPServer", { enumerable: true, get: function () { return server_1.N8NDocumentationMCPServer; } });
+var instance_context_1 = require("./types/instance-context");
+Object.defineProperty(exports, "validateInstanceContext", { enumerable: true, get: function () { return instance_context_1.validateInstanceContext; } });
+Object.defineProperty(exports, "isInstanceContext", { enumerable: true, get: function () { return instance_context_1.isInstanceContext; } });
+const mcp_engine_2 = __importDefault(require("./mcp-engine"));
+exports.default = mcp_engine_2.default;
+//# sourceMappingURL=index.js.map

dist/index.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":";;;;;;AAOA,2CAAyE;AAAhE,0GAAA,YAAY,OAAA;AACrB,2EAAuE;AAA9D,qIAAA,uBAAuB,OAAA;AAChC,2DAAyD;AAAhD,iHAAA,cAAc,OAAA;AACvB,uCAAyD;AAAhD,mHAAA,yBAAyB,OAAA;AAMlC,6DAGkC;AAFhC,2HAAA,uBAAuB,OAAA;AACvB,qHAAA,iBAAiB,OAAA;AAcnB,8DAAwC;AACxC,kBAAe,oBAAY,CAAC"}

dist/loaders/node-loader.d.ts

@@ -0,0 +1,11 @@
+export interface LoadedNode {
+    packageName: string;
+    nodeName: string;
+    NodeClass: any;
+}
+export declare class N8nNodeLoader {
+    private readonly CORE_PACKAGES;
+    loadAllNodes(): Promise<LoadedNode[]>;
+    private loadPackageNodes;
+}
+//# sourceMappingURL=node-loader.d.ts.map

dist/loaders/node-loader.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"node-loader.d.ts","sourceRoot":"","sources":["../../src/loaders/node-loader.ts"],"names":[],"mappings":"AAEA,MAAM,WAAW,UAAU;IACzB,WAAW,EAAE,MAAM,CAAC;IACpB,QAAQ,EAAE,MAAM,CAAC;IACjB,SAAS,EAAE,GAAG,CAAC;CAChB;AAED,qBAAa,aAAa;IACxB,OAAO,CAAC,QAAQ,CAAC,aAAa,CAG5B;IAEI,YAAY,IAAI,OAAO,CAAC,UAAU,EAAE,CAAC;YAmB7B,gBAAgB;CAqD/B"}

dist/loaders/node-loader.js

@@ -0,0 +1,79 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.N8nNodeLoader = void 0;
+const path_1 = __importDefault(require("path"));
+class N8nNodeLoader {
+    constructor() {
+        this.CORE_PACKAGES = [
+            { name: 'n8n-nodes-base', path: 'n8n-nodes-base' },
+            { name: '@n8n/n8n-nodes-langchain', path: '@n8n/n8n-nodes-langchain' }
+        ];
+    }
+    async loadAllNodes() {
+        const results = [];
+        for (const pkg of this.CORE_PACKAGES) {
+            try {
+                console.log(`\n📦 Loading package: ${pkg.name} from ${pkg.path}`);
+                const packageJson = require(`${pkg.path}/package.json`);
+                console.log(`  Found ${Object.keys(packageJson.n8n?.nodes || {}).length} nodes in package.json`);
+                const nodes = await this.loadPackageNodes(pkg.name, pkg.path, packageJson);
+                results.push(...nodes);
+            }
+            catch (error) {
+                console.error(`Failed to load ${pkg.name}:`, error);
+            }
+        }
+        return results;
+    }
+    async loadPackageNodes(packageName, packagePath, packageJson) {
+        const n8nConfig = packageJson.n8n || {};
+        const nodes = [];
+        const nodesList = n8nConfig.nodes || [];
+        if (Array.isArray(nodesList)) {
+            for (const nodePath of nodesList) {
+                try {
+                    const fullPath = require.resolve(`${packagePath}/${nodePath}`);
+                    const nodeModule = require(fullPath);
+                    const nodeNameMatch = nodePath.match(/\/([^\/]+)\.node\.(js|ts)$/);
+                    const nodeName = nodeNameMatch ? nodeNameMatch[1] : path_1.default.basename(nodePath, '.node.js');
+                    const NodeClass = nodeModule.default || nodeModule[nodeName] || Object.values(nodeModule)[0];
+                    if (NodeClass) {
+                        nodes.push({ packageName, nodeName, NodeClass });
+                        console.log(`  ✓ Loaded ${nodeName} from ${packageName}`);
+                    }
+                    else {
+                        console.warn(`  ⚠ No valid export found for ${nodeName} in ${packageName}`);
+                    }
+                }
+                catch (error) {
+                    console.error(`  ✗ Failed to load node from ${packageName}/${nodePath}:`, error.message);
+                }
+            }
+        }
+        else {
+            for (const [nodeName, nodePath] of Object.entries(nodesList)) {
+                try {
+                    const fullPath = require.resolve(`${packagePath}/${nodePath}`);
+                    const nodeModule = require(fullPath);
+                    const NodeClass = nodeModule.default || nodeModule[nodeName] || Object.values(nodeModule)[0];
+                    if (NodeClass) {
+                        nodes.push({ packageName, nodeName, NodeClass });
+                        console.log(`  ✓ Loaded ${nodeName} from ${packageName}`);
+                    }
+                    else {
+                        console.warn(`  ⚠ No valid export found for ${nodeName} in ${packageName}`);
+                    }
+                }
+                catch (error) {
+                    console.error(`  ✗ Failed to load node ${nodeName} from ${packageName}:`, error.message);
+                }
+            }
+        }
+        return nodes;
+    }
+}
+exports.N8nNodeLoader = N8nNodeLoader;
+//# sourceMappingURL=node-loader.js.map

dist/loaders/node-loader.js.map

@@ -0,0 +1 @@
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dist/mappers/docs-mapper.d.ts

@@ -0,0 +1,7 @@
+export declare class DocsMapper {
+    private docsPath;
+    private readonly KNOWN_FIXES;
+    fetchDocumentation(nodeType: string): Promise<string | null>;
+    private enhanceLoopNodeDocumentation;
+}
+//# sourceMappingURL=docs-mapper.d.ts.map

dist/mappers/docs-mapper.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"docs-mapper.d.ts","sourceRoot":"","sources":["../../src/mappers/docs-mapper.ts"],"names":[],"mappings":"AAGA,qBAAa,UAAU;IACrB,OAAO,CAAC,QAAQ,CAAwC;IAGxD,OAAO,CAAC,QAAQ,CAAC,WAAW,CAU1B;IAEI,kBAAkB,CAAC,QAAQ,EAAE,MAAM,GAAG,OAAO,CAAC,MAAM,GAAG,IAAI,CAAC;IAkDlE,OAAO,CAAC,4BAA4B;CAmDrC"}

dist/mappers/docs-mapper.js

@@ -0,0 +1,106 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DocsMapper = void 0;
+const fs_1 = require("fs");
+const path_1 = __importDefault(require("path"));
+class DocsMapper {
+    constructor() {
+        this.docsPath = path_1.default.join(process.cwd(), 'n8n-docs');
+        this.KNOWN_FIXES = {
+            'httpRequest': 'httprequest',
+            'code': 'code',
+            'webhook': 'webhook',
+            'respondToWebhook': 'respondtowebhook',
+            'n8n-nodes-base.httpRequest': 'httprequest',
+            'n8n-nodes-base.code': 'code',
+            'n8n-nodes-base.webhook': 'webhook',
+            'n8n-nodes-base.respondToWebhook': 'respondtowebhook'
+        };
+    }
+    async fetchDocumentation(nodeType) {
+        const fixedType = this.KNOWN_FIXES[nodeType] || nodeType;
+        const nodeName = fixedType.split('.').pop()?.toLowerCase();
+        if (!nodeName) {
+            console.log(`⚠️  Could not extract node name from: ${nodeType}`);
+            return null;
+        }
+        console.log(`📄 Looking for docs for: ${nodeType} -> ${nodeName}`);
+        const possiblePaths = [
+            `docs/integrations/builtin/core-nodes/n8n-nodes-base.${nodeName}.md`,
+            `docs/integrations/builtin/app-nodes/n8n-nodes-base.${nodeName}.md`,
+            `docs/integrations/builtin/trigger-nodes/n8n-nodes-base.${nodeName}.md`,
+            `docs/integrations/builtin/cluster-nodes/root-nodes/n8n-nodes-langchain.${nodeName}.md`,
+            `docs/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.${nodeName}.md`,
+            `docs/integrations/builtin/core-nodes/n8n-nodes-base.${nodeName}/index.md`,
+            `docs/integrations/builtin/app-nodes/n8n-nodes-base.${nodeName}/index.md`,
+            `docs/integrations/builtin/trigger-nodes/n8n-nodes-base.${nodeName}/index.md`,
+            `docs/integrations/builtin/cluster-nodes/root-nodes/n8n-nodes-langchain.${nodeName}/index.md`,
+            `docs/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.${nodeName}/index.md`
+        ];
+        for (const relativePath of possiblePaths) {
+            try {
+                const fullPath = path_1.default.join(this.docsPath, relativePath);
+                let content = await fs_1.promises.readFile(fullPath, 'utf-8');
+                console.log(`  ✓ Found docs at: ${relativePath}`);
+                content = this.enhanceLoopNodeDocumentation(nodeType, content);
+                return content;
+            }
+            catch (error) {
+                continue;
+            }
+        }
+        console.log(`  ✗ No docs found for ${nodeName}`);
+        return null;
+    }
+    enhanceLoopNodeDocumentation(nodeType, content) {
+        if (nodeType.includes('splitInBatches')) {
+            const outputGuidance = `
+
+## CRITICAL OUTPUT CONNECTION INFORMATION
+
+**⚠️ OUTPUT INDICES ARE COUNTERINTUITIVE ⚠️**
+
+The SplitInBatches node has TWO outputs with specific indices:
+- **Output 0 (index 0) = "done"**: Receives final processed data when loop completes
+- **Output 1 (index 1) = "loop"**: Receives current batch data during iteration
+
+### Correct Connection Pattern:
+1. Connect nodes that PROCESS items inside the loop to **Output 1 ("loop")**
+2. Connect nodes that run AFTER the loop completes to **Output 0 ("done")**
+3. The last processing node in the loop must connect back to the SplitInBatches node
+
+### Common Mistake:
+AI assistants often connect these backwards because the logical flow (loop first, then done) doesn't match the technical indices (done=0, loop=1).
+
+`;
+            const insertPoint = content.indexOf('## When to use');
+            if (insertPoint > -1) {
+                content = content.slice(0, insertPoint) + outputGuidance + content.slice(insertPoint);
+            }
+            else {
+                content = outputGuidance + '\n' + content;
+            }
+        }
+        if (nodeType.includes('.if')) {
+            const outputGuidance = `
+
+## Output Connection Information
+
+The IF node has TWO outputs:
+- **Output 0 (index 0) = "true"**: Items that match the condition
+- **Output 1 (index 1) = "false"**: Items that do not match the condition
+
+`;
+            const insertPoint = content.indexOf('## Node parameters');
+            if (insertPoint > -1) {
+                content = content.slice(0, insertPoint) + outputGuidance + content.slice(insertPoint);
+            }
+        }
+        return content;
+    }
+}
+exports.DocsMapper = DocsMapper;
+//# sourceMappingURL=docs-mapper.js.map

dist/mappers/docs-mapper.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"docs-mapper.js","sourceRoot":"","sources":["../../src/mappers/docs-mapper.ts"],"names":[],"mappings":";;;;;;AAAA,2BAAoC;AACpC,gDAAwB;AAExB,MAAa,UAAU;IAAvB;QACU,aAAQ,GAAG,cAAI,CAAC,IAAI,CAAC,OAAO,CAAC,GAAG,EAAE,EAAE,UAAU,CAAC,CAAC;QAGvC,gBAAW,GAA2B;YACrD,aAAa,EAAE,aAAa;YAC5B,MAAM,EAAE,MAAM;YACd,SAAS,EAAE,SAAS;YACpB,kBAAkB,EAAE,kBAAkB;YAEtC,4BAA4B,EAAE,aAAa;YAC3C,qBAAqB,EAAE,MAAM;YAC7B,wBAAwB,EAAE,SAAS;YACnC,iCAAiC,EAAE,kBAAkB;SACtD,CAAC;IAuGJ,CAAC;IArGC,KAAK,CAAC,kBAAkB,CAAC,QAAgB;QAEvC,MAAM,SAAS,GAAG,IAAI,CAAC,WAAW,CAAC,QAAQ,CAAC,IAAI,QAAQ,CAAC;QAGzD,MAAM,QAAQ,GAAG,SAAS,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,GAAG,EAAE,EAAE,WAAW,EAAE,CAAC;QAC3D,IAAI,CAAC,QAAQ,EAAE,CAAC;YACd,OAAO,CAAC,GAAG,CAAC,yCAAyC,QAAQ,EAAE,CAAC,CAAC;YACjE,OAAO,IAAI,CAAC;QACd,CAAC;QAED,OAAO,CAAC,GAAG,CAAC,4BAA4B,QAAQ,OAAO,QAAQ,EAAE,CAAC,CAAC;QAGnE,MAAM,aAAa,GAAG;YAEpB,uDAAuD,QAAQ,KAAK;YACpE,sDAAsD,QAAQ,KAAK;YACnE,0DAA0D,QAAQ,KAAK;YACvE,0EAA0E,QAAQ,KAAK;YACvF,yEAAyE,QAAQ,KAAK;YAEtF,uDAAuD,QAAQ,WAAW;YAC1E,sDAAsD,QAAQ,WAAW;YACzE,0DAA0D,QAAQ,WAAW;YAC7E,0EAA0E,QAAQ,WAAW;YAC7F,yEAAyE,QAAQ,WAAW;SAC7F,CAAC;QAGF,KAAK,MAAM,YAAY,IAAI,aAAa,EAAE,CAAC;YACzC,IAAI,CAAC;gBACH,MAAM,QAAQ,GAAG,cAAI,CAAC,IAAI,CAAC,IAAI,CAAC,QAAQ,EAAE,YAAY,CAAC,CAAC;gBACxD,IAAI,OAAO,GAAG,MAAM,aAAE,CAAC,QAAQ,CAAC,QAAQ,EAAE,OAAO,CAAC,CAAC;gBACnD,OAAO,CAAC,GAAG,CAAC,sBAAsB,YAAY,EAAE,CAAC,CAAC;gBAGlD,OAAO,GAAG,IAAI,CAAC,4BAA4B,CAAC,QAAQ,EAAE,OAAO,CAAC,CAAC;gBAE/D,OAAO,OAAO,CAAC;YACjB,CAAC;YAAC,OAAO,KAAK,EAAE,CAAC;gBAEf,SAAS;YACX,CAAC;QACH,CAAC;QAED,OAAO,CAAC,GAAG,CAAC,yBAAyB,QAAQ,EAAE,CAAC,CAAC;QACjD,OAAO,IAAI,CAAC;IACd,CAAC;IAEO,4BAA4B,CAAC,QAAgB,EAAE,OAAe;QAEpE,IAAI,QAAQ,CAAC,QAAQ,CAAC,gBAAgB,CAAC,EAAE,CAAC;YACxC,MAAM,cAAc,GAAG;;;;;;;;;;;;;;;;;;CAkB5B,CAAC;YAEI,MAAM,WAAW,GAAG,OAAO,CAAC,OAAO,CAAC,gBAAgB,CAAC,CAAC;YACtD,IAAI,WAAW,GAAG,CAAC,CAAC,EAAE,CAAC;gBACrB,OAAO,GAAG,OAAO,CAAC,KAAK,CAAC,CAAC,EAAE,WAAW,CAAC,GAAG,cAAc,GAAG,OAAO,CAAC,KAAK,CAAC,WAAW,CAAC,CAAC;YACxF,CAAC;iBAAM,CAAC;gBAEN,OAAO,GAAG,cAAc,GAAG,IAAI,GAAG,OAAO,CAAC;YAC5C,CAAC;QACH,CAAC;QAGD,IAAI,QAAQ,CAAC,QAAQ,CAAC,KAAK,CAAC,EAAE,CAAC;YAC7B,MAAM,cAAc,GAAG;;;;;;;;CAQ5B,CAAC;YACI,MAAM,WAAW,GAAG,OAAO,CAAC,OAAO,CAAC,oBAAoB,CAAC,CAAC;YAC1D,IAAI,WAAW,GAAG,CAAC,CAAC,EAAE,CAAC;gBACrB,OAAO,GAAG,OAAO,CAAC,KAAK,CAAC,CAAC,EAAE,WAAW,CAAC,GAAG,cAAc,GAAG,OAAO,CAAC,KAAK,CAAC,WAAW,CAAC,CAAC;YACxF,CAAC;QACH,CAAC;QAED,OAAO,OAAO,CAAC;IACjB,CAAC;CACF;AArHD,gCAqHC"}

dist/mcp-engine.d.ts

@@ -0,0 +1,36 @@
+import { Request, Response } from 'express';
+import { InstanceContext } from './types/instance-context';
+import { SessionState } from './types/session-state';
+export interface EngineHealth {
+    status: 'healthy' | 'unhealthy';
+    uptime: number;
+    sessionActive: boolean;
+    memoryUsage: {
+        used: number;
+        total: number;
+        unit: string;
+    };
+    version: string;
+}
+export interface EngineOptions {
+    sessionTimeout?: number;
+    logLevel?: 'error' | 'warn' | 'info' | 'debug';
+}
+export declare class N8NMCPEngine {
+    private server;
+    private startTime;
+    constructor(options?: EngineOptions);
+    processRequest(req: Request, res: Response, instanceContext?: InstanceContext): Promise<void>;
+    healthCheck(): Promise<EngineHealth>;
+    getSessionInfo(): {
+        active: boolean;
+        sessionId?: string;
+        age?: number;
+    };
+    exportSessionState(): SessionState[];
+    restoreSessionState(sessions: SessionState[]): number;
+    shutdown(): Promise<void>;
+    start(): Promise<void>;
+}
+export default N8NMCPEngine;
+//# sourceMappingURL=mcp-engine.d.ts.map

dist/mcp-engine.d.ts.map

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dist/mcp-engine.js

@@ -0,0 +1,77 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.N8NMCPEngine = void 0;
+const http_server_single_session_1 = require("./http-server-single-session");
+const logger_1 = require("./utils/logger");
+class N8NMCPEngine {
+    constructor(options = {}) {
+        this.server = new http_server_single_session_1.SingleSessionHTTPServer();
+        this.startTime = new Date();
+        if (options.logLevel) {
+            process.env.LOG_LEVEL = options.logLevel;
+        }
+    }
+    async processRequest(req, res, instanceContext) {
+        try {
+            await this.server.handleRequest(req, res, instanceContext);
+        }
+        catch (error) {
+            logger_1.logger.error('Engine processRequest error:', error);
+            throw error;
+        }
+    }
+    async healthCheck() {
+        try {
+            const sessionInfo = this.server.getSessionInfo();
+            const memoryUsage = process.memoryUsage();
+            return {
+                status: 'healthy',
+                uptime: Math.floor((Date.now() - this.startTime.getTime()) / 1000),
+                sessionActive: sessionInfo.active,
+                memoryUsage: {
+                    used: Math.round(memoryUsage.heapUsed / 1024 / 1024),
+                    total: Math.round(memoryUsage.heapTotal / 1024 / 1024),
+                    unit: 'MB'
+                },
+                version: '2.24.1'
+            };
+        }
+        catch (error) {
+            logger_1.logger.error('Health check failed:', error);
+            return {
+                status: 'unhealthy',
+                uptime: 0,
+                sessionActive: false,
+                memoryUsage: { used: 0, total: 0, unit: 'MB' },
+                version: '2.24.1'
+            };
+        }
+    }
+    getSessionInfo() {
+        return this.server.getSessionInfo();
+    }
+    exportSessionState() {
+        if (!this.server) {
+            logger_1.logger.warn('Cannot export sessions: server not initialized');
+            return [];
+        }
+        return this.server.exportSessionState();
+    }
+    restoreSessionState(sessions) {
+        if (!this.server) {
+            logger_1.logger.warn('Cannot restore sessions: server not initialized');
+            return 0;
+        }
+        return this.server.restoreSessionState(sessions);
+    }
+    async shutdown() {
+        logger_1.logger.info('Shutting down N8N MCP Engine...');
+        await this.server.shutdown();
+    }
+    async start() {
+        await this.server.start();
+    }
+}
+exports.N8NMCPEngine = N8NMCPEngine;
+exports.default = N8NMCPEngine;
+//# sourceMappingURL=mcp-engine.js.map

dist/mcp-engine.js.map

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dist/mcp-tools-engine.d.ts

@@ -0,0 +1,47 @@
+import { NodeRepository } from './database/node-repository';
+import { WorkflowValidationResult } from './services/workflow-validator';
+export declare class MCPEngine {
+    private repository;
+    private workflowValidator;
+    constructor(repository: NodeRepository);
+    listNodes(args?: any): Promise<any[]>;
+    searchNodes(args: any): Promise<any[]>;
+    getNodeInfo(args: any): Promise<any>;
+    getNodeEssentials(args: any): Promise<{
+        nodeType: any;
+        displayName: any;
+        description: any;
+        category: any;
+        required: import("./services/property-filter").SimplifiedProperty[];
+        common: import("./services/property-filter").SimplifiedProperty[];
+    } | null>;
+    getNodeDocumentation(args: any): Promise<any>;
+    validateNodeOperation(args: any): Promise<import("./services/config-validator").ValidationResult | {
+        valid: boolean;
+        errors: {
+            type: string;
+            property: string;
+            message: string;
+        }[];
+        warnings: never[];
+        suggestions: never[];
+        visibleProperties: never[];
+        hiddenProperties: never[];
+    }>;
+    validateNodeMinimal(args: any): Promise<{
+        missingFields: never[];
+        error: string;
+    } | {
+        missingFields: string[];
+        error?: undefined;
+    }>;
+    searchNodeProperties(args: any): Promise<any[]>;
+    listAITools(args: any): Promise<any[]>;
+    getDatabaseStatistics(args: any): Promise<{
+        totalNodes: number;
+        aiToolsCount: number;
+        categories: string[];
+    }>;
+    validateWorkflow(args: any): Promise<WorkflowValidationResult>;
+}
+//# sourceMappingURL=mcp-tools-engine.d.ts.map

dist/mcp-tools-engine.d.ts.map

@@ -0,0 +1 @@
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dist/mcp-tools-engine.js

@@ -0,0 +1,89 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MCPEngine = void 0;
+const property_filter_1 = require("./services/property-filter");
+const config_validator_1 = require("./services/config-validator");
+const enhanced_config_validator_1 = require("./services/enhanced-config-validator");
+const workflow_validator_1 = require("./services/workflow-validator");
+class MCPEngine {
+    constructor(repository) {
+        this.repository = repository;
+        this.workflowValidator = new workflow_validator_1.WorkflowValidator(repository, enhanced_config_validator_1.EnhancedConfigValidator);
+    }
+    async listNodes(args = {}) {
+        return this.repository.getAllNodes(args.limit);
+    }
+    async searchNodes(args) {
+        return this.repository.searchNodes(args.query, args.mode || 'OR', args.limit || 20);
+    }
+    async getNodeInfo(args) {
+        return this.repository.getNodeByType(args.nodeType);
+    }
+    async getNodeEssentials(args) {
+        const node = await this.repository.getNodeByType(args.nodeType);
+        if (!node)
+            return null;
+        const essentials = property_filter_1.PropertyFilter.getEssentials(node.properties || [], args.nodeType);
+        return {
+            nodeType: node.nodeType,
+            displayName: node.displayName,
+            description: node.description,
+            category: node.category,
+            required: essentials.required,
+            common: essentials.common
+        };
+    }
+    async getNodeDocumentation(args) {
+        const node = await this.repository.getNodeByType(args.nodeType);
+        return node?.documentation || null;
+    }
+    async validateNodeOperation(args) {
+        const node = await this.repository.getNodeByType(args.nodeType);
+        if (!node) {
+            return {
+                valid: false,
+                errors: [{ type: 'invalid_configuration', property: '', message: 'Node type not found' }],
+                warnings: [],
+                suggestions: [],
+                visibleProperties: [],
+                hiddenProperties: []
+            };
+        }
+        const userProvidedKeys = new Set(Object.keys(args.config || {}));
+        return config_validator_1.ConfigValidator.validate(args.nodeType, args.config, node.properties || [], userProvidedKeys);
+    }
+    async validateNodeMinimal(args) {
+        const node = await this.repository.getNodeByType(args.nodeType);
+        if (!node) {
+            return { missingFields: [], error: 'Node type not found' };
+        }
+        const missingFields = [];
+        const requiredFields = property_filter_1.PropertyFilter.getEssentials(node.properties || [], args.nodeType).required;
+        for (const field of requiredFields) {
+            if (!args.config[field.name]) {
+                missingFields.push(field.name);
+            }
+        }
+        return { missingFields };
+    }
+    async searchNodeProperties(args) {
+        return this.repository.searchNodeProperties(args.nodeType, args.query, args.maxResults || 20);
+    }
+    async listAITools(args) {
+        return this.repository.getAIToolNodes();
+    }
+    async getDatabaseStatistics(args) {
+        const count = await this.repository.getNodeCount();
+        const aiTools = await this.repository.getAIToolNodes();
+        return {
+            totalNodes: count,
+            aiToolsCount: aiTools.length,
+            categories: ['trigger', 'transform', 'output', 'input']
+        };
+    }
+    async validateWorkflow(args) {
+        return this.workflowValidator.validateWorkflow(args.workflow, args.options);
+    }
+}
+exports.MCPEngine = MCPEngine;
+//# sourceMappingURL=mcp-tools-engine.js.map

dist/mcp-tools-engine.js.map

@@ -0,0 +1 @@
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dist/mcp/handlers-n8n-manager.d.ts

@@ -0,0 +1,29 @@
+import { N8nApiClient } from '../services/n8n-api-client';
+import { McpToolResponse } from '../types/n8n-api';
+import { NodeRepository } from '../database/node-repository';
+import { InstanceContext } from '../types/instance-context';
+import { TemplateService } from '../templates/template-service';
+export declare function getInstanceCacheStatistics(): string;
+export declare function getInstanceCacheMetrics(): import("../utils/cache-utils").CacheMetrics;
+export declare function clearInstanceCache(): void;
+export declare function getN8nApiClient(context?: InstanceContext): N8nApiClient | null;
+export declare function handleCreateWorkflow(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleGetWorkflow(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleGetWorkflowDetails(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleGetWorkflowStructure(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleGetWorkflowMinimal(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleUpdateWorkflow(args: unknown, repository: NodeRepository, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleDeleteWorkflow(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleListWorkflows(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleValidateWorkflow(args: unknown, repository: NodeRepository, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleAutofixWorkflow(args: unknown, repository: NodeRepository, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleTestWorkflow(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleGetExecution(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleListExecutions(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleDeleteExecution(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleHealthCheck(context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleDiagnostic(request: any, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleWorkflowVersions(args: unknown, repository: NodeRepository, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleDeployTemplate(args: unknown, templateService: TemplateService, repository: NodeRepository, context?: InstanceContext): Promise<McpToolResponse>;
+export declare function handleTriggerWebhookWorkflow(args: unknown, context?: InstanceContext): Promise<McpToolResponse>;
+//# sourceMappingURL=handlers-n8n-manager.d.ts.map

dist/mcp/handlers-n8n-manager.d.ts.map

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dist/mcp/handlers-workflow-diff.d.ts

@@ -0,0 +1,5 @@
+import { McpToolResponse } from '../types/n8n-api';
+import { InstanceContext } from '../types/instance-context';
+import { NodeRepository } from '../database/node-repository';
+export declare function handleUpdatePartialWorkflow(args: unknown, repository: NodeRepository, context?: InstanceContext): Promise<McpToolResponse>;
+//# sourceMappingURL=handlers-workflow-diff.d.ts.map

dist/mcp/handlers-workflow-diff.d.ts.map

@@ -0,0 +1 @@
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dist/mcp/handlers-workflow-diff.js

@@ -0,0 +1,461 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || (function () {
+    var ownKeys = function(o) {
+        ownKeys = Object.getOwnPropertyNames || function (o) {
+            var ar = [];
+            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
+            return ar;
+        };
+        return ownKeys(o);
+    };
+    return function (mod) {
+        if (mod && mod.__esModule) return mod;
+        var result = {};
+        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
+        __setModuleDefault(result, mod);
+        return result;
+    };
+})();
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.handleUpdatePartialWorkflow = handleUpdatePartialWorkflow;
+const zod_1 = require("zod");
+const workflow_diff_engine_1 = require("../services/workflow-diff-engine");
+const handlers_n8n_manager_1 = require("./handlers-n8n-manager");
+const n8n_errors_1 = require("../utils/n8n-errors");
+const logger_1 = require("../utils/logger");
+const n8n_validation_1 = require("../services/n8n-validation");
+const workflow_versioning_service_1 = require("../services/workflow-versioning-service");
+const workflow_validator_1 = require("../services/workflow-validator");
+const enhanced_config_validator_1 = require("../services/enhanced-config-validator");
+let cachedValidator = null;
+function getValidator(repository) {
+    if (!cachedValidator) {
+        cachedValidator = new workflow_validator_1.WorkflowValidator(repository, enhanced_config_validator_1.EnhancedConfigValidator);
+    }
+    return cachedValidator;
+}
+const workflowDiffSchema = zod_1.z.object({
+    id: zod_1.z.string(),
+    operations: zod_1.z.array(zod_1.z.object({
+        type: zod_1.z.string(),
+        description: zod_1.z.string().optional(),
+        node: zod_1.z.any().optional(),
+        nodeId: zod_1.z.string().optional(),
+        nodeName: zod_1.z.string().optional(),
+        updates: zod_1.z.any().optional(),
+        position: zod_1.z.tuple([zod_1.z.number(), zod_1.z.number()]).optional(),
+        source: zod_1.z.string().optional(),
+        target: zod_1.z.string().optional(),
+        from: zod_1.z.string().optional(),
+        to: zod_1.z.string().optional(),
+        sourceOutput: zod_1.z.string().optional(),
+        targetInput: zod_1.z.string().optional(),
+        sourceIndex: zod_1.z.number().optional(),
+        targetIndex: zod_1.z.number().optional(),
+        branch: zod_1.z.enum(['true', 'false']).optional(),
+        case: zod_1.z.number().optional(),
+        ignoreErrors: zod_1.z.boolean().optional(),
+        dryRun: zod_1.z.boolean().optional(),
+        connections: zod_1.z.any().optional(),
+        settings: zod_1.z.any().optional(),
+        name: zod_1.z.string().optional(),
+        tag: zod_1.z.string().optional(),
+    })),
+    validateOnly: zod_1.z.boolean().optional(),
+    continueOnError: zod_1.z.boolean().optional(),
+    createBackup: zod_1.z.boolean().optional(),
+    intent: zod_1.z.string().optional(),
+});
+async function handleUpdatePartialWorkflow(args, repository, context) {
+    const startTime = Date.now();
+    const sessionId = `mutation_${Date.now()}_${Math.random().toString(36).slice(2, 11)}`;
+    let workflowBefore = null;
+    let validationBefore = null;
+    let validationAfter = null;
+    try {
+        if (process.env.DEBUG_MCP === 'true') {
+            logger_1.logger.debug('Workflow diff request received', {
+                argsType: typeof args,
+                hasWorkflowId: args && typeof args === 'object' && 'workflowId' in args,
+                operationCount: args && typeof args === 'object' && 'operations' in args ?
+                    args.operations?.length : 0
+            });
+        }
+        const input = workflowDiffSchema.parse(args);
+        const client = (0, handlers_n8n_manager_1.getN8nApiClient)(context);
+        if (!client) {
+            return {
+                success: false,
+                error: 'n8n API not configured. Please set N8N_API_URL and N8N_API_KEY environment variables.'
+            };
+        }
+        let workflow;
+        try {
+            workflow = await client.getWorkflow(input.id);
+            workflowBefore = JSON.parse(JSON.stringify(workflow));
+            try {
+                const validator = getValidator(repository);
+                validationBefore = await validator.validateWorkflow(workflowBefore, {
+                    validateNodes: true,
+                    validateConnections: true,
+                    validateExpressions: true,
+                    profile: 'runtime'
+                });
+            }
+            catch (validationError) {
+                logger_1.logger.debug('Pre-mutation validation failed (non-blocking):', validationError);
+                validationBefore = {
+                    valid: false,
+                    errors: [{ type: 'validation_error', message: 'Validation failed' }]
+                };
+            }
+        }
+        catch (error) {
+            if (error instanceof n8n_errors_1.N8nApiError) {
+                return {
+                    success: false,
+                    error: (0, n8n_errors_1.getUserFriendlyErrorMessage)(error),
+                    code: error.code
+                };
+            }
+            throw error;
+        }
+        if (input.createBackup !== false && !input.validateOnly) {
+            try {
+                const versioningService = new workflow_versioning_service_1.WorkflowVersioningService(repository, client);
+                const backupResult = await versioningService.createBackup(input.id, workflow, {
+                    trigger: 'partial_update',
+                    operations: input.operations
+                });
+                logger_1.logger.info('Workflow backup created', {
+                    workflowId: input.id,
+                    versionId: backupResult.versionId,
+                    versionNumber: backupResult.versionNumber,
+                    pruned: backupResult.pruned
+                });
+            }
+            catch (error) {
+                logger_1.logger.warn('Failed to create workflow backup', {
+                    workflowId: input.id,
+                    error: error.message
+                });
+            }
+        }
+        const diffEngine = new workflow_diff_engine_1.WorkflowDiffEngine();
+        const diffRequest = input;
+        const diffResult = await diffEngine.applyDiff(workflow, diffRequest);
+        if (!diffResult.success) {
+            if (diffRequest.continueOnError && diffResult.workflow && diffResult.operationsApplied && diffResult.operationsApplied > 0) {
+                logger_1.logger.info(`continueOnError mode: Applying ${diffResult.operationsApplied} successful operations despite ${diffResult.failed?.length || 0} failures`);
+            }
+            else {
+                return {
+                    success: false,
+                    error: 'Failed to apply diff operations',
+                    details: {
+                        errors: diffResult.errors,
+                        warnings: diffResult.warnings,
+                        operationsApplied: diffResult.operationsApplied,
+                        applied: diffResult.applied,
+                        failed: diffResult.failed
+                    }
+                };
+            }
+        }
+        if (input.validateOnly) {
+            return {
+                success: true,
+                message: diffResult.message,
+                data: {
+                    valid: true,
+                    operationsToApply: input.operations.length
+                },
+                details: {
+                    warnings: diffResult.warnings
+                }
+            };
+        }
+        if (diffResult.workflow) {
+            const structureErrors = (0, n8n_validation_1.validateWorkflowStructure)(diffResult.workflow);
+            if (structureErrors.length > 0) {
+                const skipValidation = process.env.SKIP_WORKFLOW_VALIDATION === 'true';
+                logger_1.logger.warn('Workflow structure validation failed after applying diff operations', {
+                    workflowId: input.id,
+                    errors: structureErrors,
+                    blocking: !skipValidation
+                });
+                const errorTypes = new Set();
+                structureErrors.forEach(err => {
+                    if (err.includes('operator') || err.includes('singleValue'))
+                        errorTypes.add('operator_issues');
+                    if (err.includes('connection') || err.includes('referenced'))
+                        errorTypes.add('connection_issues');
+                    if (err.includes('Missing') || err.includes('missing'))
+                        errorTypes.add('missing_metadata');
+                    if (err.includes('branch') || err.includes('output'))
+                        errorTypes.add('branch_mismatch');
+                });
+                const recoverySteps = [];
+                if (errorTypes.has('operator_issues')) {
+                    recoverySteps.push('Operator structure issue detected. Use validate_node_operation to check specific nodes.');
+                    recoverySteps.push('Binary operators (equals, contains, greaterThan, etc.) must NOT have singleValue:true');
+                    recoverySteps.push('Unary operators (isEmpty, isNotEmpty, true, false) REQUIRE singleValue:true');
+                }
+                if (errorTypes.has('connection_issues')) {
+                    recoverySteps.push('Connection validation failed. Check all node connections reference existing nodes.');
+                    recoverySteps.push('Use cleanStaleConnections operation to remove connections to non-existent nodes.');
+                }
+                if (errorTypes.has('missing_metadata')) {
+                    recoverySteps.push('Missing metadata detected. Ensure filter-based nodes (IF v2.2+, Switch v3.2+) have complete conditions.options.');
+                    recoverySteps.push('Required options: {version: 2, leftValue: "", caseSensitive: true, typeValidation: "strict"}');
+                }
+                if (errorTypes.has('branch_mismatch')) {
+                    recoverySteps.push('Branch count mismatch. Ensure Switch nodes have outputs for all rules (e.g., 3 rules = 3 output branches).');
+                }
+                if (recoverySteps.length === 0) {
+                    recoverySteps.push('Review the validation errors listed above');
+                    recoverySteps.push('Fix issues using updateNode or cleanStaleConnections operations');
+                    recoverySteps.push('Run validate_workflow again to verify fixes');
+                }
+                const errorMessage = structureErrors.length === 1
+                    ? `Workflow validation failed: ${structureErrors[0]}`
+                    : `Workflow validation failed with ${structureErrors.length} structural issues`;
+                if (!skipValidation) {
+                    return {
+                        success: false,
+                        error: errorMessage,
+                        details: {
+                            errors: structureErrors,
+                            errorCount: structureErrors.length,
+                            operationsApplied: diffResult.operationsApplied,
+                            applied: diffResult.applied,
+                            recoveryGuidance: recoverySteps,
+                            note: 'Operations were applied but created an invalid workflow structure. The workflow was NOT saved to n8n to prevent UI rendering errors.',
+                            autoSanitizationNote: 'Auto-sanitization runs on all nodes during updates to fix operator structures and add missing metadata. However, it cannot fix all issues (e.g., broken connections, branch mismatches). Use the recovery guidance above to resolve remaining issues.'
+                        }
+                    };
+                }
+                logger_1.logger.info('Workflow validation skipped (SKIP_WORKFLOW_VALIDATION=true): Allowing workflow with validation warnings to proceed', {
+                    workflowId: input.id,
+                    warningCount: structureErrors.length
+                });
+            }
+        }
+        try {
+            const updatedWorkflow = await client.updateWorkflow(input.id, diffResult.workflow);
+            let finalWorkflow = updatedWorkflow;
+            let activationMessage = '';
+            try {
+                const validator = getValidator(repository);
+                validationAfter = await validator.validateWorkflow(finalWorkflow, {
+                    validateNodes: true,
+                    validateConnections: true,
+                    validateExpressions: true,
+                    profile: 'runtime'
+                });
+            }
+            catch (validationError) {
+                logger_1.logger.debug('Post-mutation validation failed (non-blocking):', validationError);
+                validationAfter = {
+                    valid: false,
+                    errors: [{ type: 'validation_error', message: 'Validation failed' }]
+                };
+            }
+            if (diffResult.shouldActivate) {
+                try {
+                    finalWorkflow = await client.activateWorkflow(input.id);
+                    activationMessage = ' Workflow activated.';
+                }
+                catch (activationError) {
+                    logger_1.logger.error('Failed to activate workflow after update', activationError);
+                    return {
+                        success: false,
+                        error: 'Workflow updated successfully but activation failed',
+                        details: {
+                            workflowUpdated: true,
+                            activationError: activationError instanceof Error ? activationError.message : 'Unknown error'
+                        }
+                    };
+                }
+            }
+            else if (diffResult.shouldDeactivate) {
+                try {
+                    finalWorkflow = await client.deactivateWorkflow(input.id);
+                    activationMessage = ' Workflow deactivated.';
+                }
+                catch (deactivationError) {
+                    logger_1.logger.error('Failed to deactivate workflow after update', deactivationError);
+                    return {
+                        success: false,
+                        error: 'Workflow updated successfully but deactivation failed',
+                        details: {
+                            workflowUpdated: true,
+                            deactivationError: deactivationError instanceof Error ? deactivationError.message : 'Unknown error'
+                        }
+                    };
+                }
+            }
+            if (workflowBefore && !input.validateOnly) {
+                trackWorkflowMutation({
+                    sessionId,
+                    toolName: 'n8n_update_partial_workflow',
+                    userIntent: input.intent || 'Partial workflow update',
+                    operations: input.operations,
+                    workflowBefore,
+                    workflowAfter: finalWorkflow,
+                    validationBefore,
+                    validationAfter,
+                    mutationSuccess: true,
+                    durationMs: Date.now() - startTime,
+                }).catch(err => {
+                    logger_1.logger.debug('Failed to track mutation telemetry:', err);
+                });
+            }
+            return {
+                success: true,
+                data: {
+                    id: finalWorkflow.id,
+                    name: finalWorkflow.name,
+                    active: finalWorkflow.active,
+                    nodeCount: finalWorkflow.nodes?.length || 0,
+                    operationsApplied: diffResult.operationsApplied
+                },
+                message: `Workflow "${finalWorkflow.name}" updated successfully. Applied ${diffResult.operationsApplied} operations.${activationMessage} Use n8n_get_workflow with mode 'structure' to verify current state.`,
+                details: {
+                    applied: diffResult.applied,
+                    failed: diffResult.failed,
+                    errors: diffResult.errors,
+                    warnings: diffResult.warnings
+                }
+            };
+        }
+        catch (error) {
+            if (workflowBefore && !input.validateOnly) {
+                trackWorkflowMutation({
+                    sessionId,
+                    toolName: 'n8n_update_partial_workflow',
+                    userIntent: input.intent || 'Partial workflow update',
+                    operations: input.operations,
+                    workflowBefore,
+                    workflowAfter: workflowBefore,
+                    validationBefore,
+                    validationAfter: validationBefore,
+                    mutationSuccess: false,
+                    mutationError: error instanceof Error ? error.message : 'Unknown error',
+                    durationMs: Date.now() - startTime,
+                }).catch(err => {
+                    logger_1.logger.warn('Failed to track mutation telemetry for failed operation:', err);
+                });
+            }
+            if (error instanceof n8n_errors_1.N8nApiError) {
+                return {
+                    success: false,
+                    error: (0, n8n_errors_1.getUserFriendlyErrorMessage)(error),
+                    code: error.code,
+                    details: error.details
+                };
+            }
+            throw error;
+        }
+    }
+    catch (error) {
+        if (error instanceof zod_1.z.ZodError) {
+            return {
+                success: false,
+                error: 'Invalid input',
+                details: { errors: error.errors }
+            };
+        }
+        logger_1.logger.error('Failed to update partial workflow', error);
+        return {
+            success: false,
+            error: error instanceof Error ? error.message : 'Unknown error occurred'
+        };
+    }
+}
+function inferIntentFromOperations(operations) {
+    if (!operations || operations.length === 0) {
+        return 'Partial workflow update';
+    }
+    const opTypes = operations.map((op) => op.type);
+    const opCount = operations.length;
+    if (opCount === 1) {
+        const op = operations[0];
+        switch (op.type) {
+            case 'addNode':
+                return `Add ${op.node?.type || 'node'}`;
+            case 'removeNode':
+                return `Remove node ${op.nodeName || op.nodeId || ''}`.trim();
+            case 'updateNode':
+                return `Update node ${op.nodeName || op.nodeId || ''}`.trim();
+            case 'addConnection':
+                return `Connect ${op.source || 'node'} to ${op.target || 'node'}`;
+            case 'removeConnection':
+                return `Disconnect ${op.source || 'node'} from ${op.target || 'node'}`;
+            case 'rewireConnection':
+                return `Rewire ${op.source || 'node'} from ${op.from || ''} to ${op.to || ''}`.trim();
+            case 'updateName':
+                return `Rename workflow to "${op.name || ''}"`;
+            case 'activateWorkflow':
+                return 'Activate workflow';
+            case 'deactivateWorkflow':
+                return 'Deactivate workflow';
+            default:
+                return `Workflow ${op.type}`;
+        }
+    }
+    const typeSet = new Set(opTypes);
+    const summary = [];
+    if (typeSet.has('addNode')) {
+        const count = opTypes.filter((t) => t === 'addNode').length;
+        summary.push(`add ${count} node${count > 1 ? 's' : ''}`);
+    }
+    if (typeSet.has('removeNode')) {
+        const count = opTypes.filter((t) => t === 'removeNode').length;
+        summary.push(`remove ${count} node${count > 1 ? 's' : ''}`);
+    }
+    if (typeSet.has('updateNode')) {
+        const count = opTypes.filter((t) => t === 'updateNode').length;
+        summary.push(`update ${count} node${count > 1 ? 's' : ''}`);
+    }
+    if (typeSet.has('addConnection') || typeSet.has('rewireConnection')) {
+        summary.push('modify connections');
+    }
+    if (typeSet.has('updateName') || typeSet.has('updateSettings')) {
+        summary.push('update metadata');
+    }
+    return summary.length > 0
+        ? `Workflow update: ${summary.join(', ')}`
+        : `Workflow update: ${opCount} operations`;
+}
+async function trackWorkflowMutation(data) {
+    try {
+        if (!data.userIntent ||
+            data.userIntent === 'Partial workflow update' ||
+            data.userIntent.length < 10) {
+            data.userIntent = inferIntentFromOperations(data.operations);
+        }
+        const { telemetry } = await Promise.resolve().then(() => __importStar(require('../telemetry/telemetry-manager.js')));
+        await telemetry.trackWorkflowMutation(data);
+    }
+    catch (error) {
+        logger_1.logger.debug('Telemetry tracking failed:', error);
+    }
+}
+//# sourceMappingURL=handlers-workflow-diff.js.map

dist/mcp/index.d.ts

@@ -0,0 +1,3 @@
+#!/usr/bin/env node
+export {};
+//# sourceMappingURL=index.d.ts.map

dist/mcp/index.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../../src/mcp/index.ts"],"names":[],"mappings":""}

dist/mcp/index.js

@@ -0,0 +1,219 @@
+#!/usr/bin/env node
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || (function () {
+    var ownKeys = function(o) {
+        ownKeys = Object.getOwnPropertyNames || function (o) {
+            var ar = [];
+            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
+            return ar;
+        };
+        return ownKeys(o);
+    };
+    return function (mod) {
+        if (mod && mod.__esModule) return mod;
+        var result = {};
+        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
+        __setModuleDefault(result, mod);
+        return result;
+    };
+})();
+Object.defineProperty(exports, "__esModule", { value: true });
+const server_1 = require("./server");
+const logger_1 = require("../utils/logger");
+const config_manager_1 = require("../telemetry/config-manager");
+const early_error_logger_1 = require("../telemetry/early-error-logger");
+const startup_checkpoints_1 = require("../telemetry/startup-checkpoints");
+const fs_1 = require("fs");
+process.on('uncaughtException', (error) => {
+    if (process.env.MCP_MODE !== 'stdio') {
+        console.error('Uncaught Exception:', error);
+    }
+    logger_1.logger.error('Uncaught Exception:', error);
+    process.exit(1);
+});
+process.on('unhandledRejection', (reason, promise) => {
+    if (process.env.MCP_MODE !== 'stdio') {
+        console.error('Unhandled Rejection at:', promise, 'reason:', reason);
+    }
+    logger_1.logger.error('Unhandled Rejection:', reason);
+    process.exit(1);
+});
+function isContainerEnvironment() {
+    const dockerEnv = (process.env.IS_DOCKER || '').toLowerCase();
+    const containerEnv = (process.env.IS_CONTAINER || '').toLowerCase();
+    if (['true', '1', 'yes'].includes(dockerEnv)) {
+        return true;
+    }
+    if (['true', '1', 'yes'].includes(containerEnv)) {
+        return true;
+    }
+    try {
+        return (0, fs_1.existsSync)('/.dockerenv') || (0, fs_1.existsSync)('/run/.containerenv');
+    }
+    catch (error) {
+        logger_1.logger.debug('Container detection filesystem check failed:', error);
+        return false;
+    }
+}
+async function main() {
+    const startTime = Date.now();
+    const earlyLogger = early_error_logger_1.EarlyErrorLogger.getInstance();
+    const checkpoints = [];
+    try {
+        earlyLogger.logCheckpoint(startup_checkpoints_1.STARTUP_CHECKPOINTS.PROCESS_STARTED);
+        checkpoints.push(startup_checkpoints_1.STARTUP_CHECKPOINTS.PROCESS_STARTED);
+        const args = process.argv.slice(2);
+        if (args.length > 0 && args[0] === 'telemetry') {
+            const telemetryConfig = config_manager_1.TelemetryConfigManager.getInstance();
+            const action = args[1];
+            switch (action) {
+                case 'enable':
+                    telemetryConfig.enable();
+                    process.exit(0);
+                    break;
+                case 'disable':
+                    telemetryConfig.disable();
+                    process.exit(0);
+                    break;
+                case 'status':
+                    console.log(telemetryConfig.getStatus());
+                    process.exit(0);
+                    break;
+                default:
+                    console.log(`
+Usage: n8n-mcp telemetry [command]
+
+Commands:
+  enable   Enable anonymous telemetry
+  disable  Disable anonymous telemetry
+  status   Show current telemetry status
+
+Learn more: https://github.com/czlonkowski/n8n-mcp/blob/main/PRIVACY.md
+`);
+                    process.exit(args[1] ? 1 : 0);
+            }
+        }
+        const mode = process.env.MCP_MODE || 'stdio';
+        earlyLogger.logCheckpoint(startup_checkpoints_1.STARTUP_CHECKPOINTS.TELEMETRY_INITIALIZING);
+        checkpoints.push(startup_checkpoints_1.STARTUP_CHECKPOINTS.TELEMETRY_INITIALIZING);
+        earlyLogger.logCheckpoint(startup_checkpoints_1.STARTUP_CHECKPOINTS.TELEMETRY_READY);
+        checkpoints.push(startup_checkpoints_1.STARTUP_CHECKPOINTS.TELEMETRY_READY);
+        try {
+            if (mode === 'http') {
+                console.error(`Starting n8n Documentation MCP Server in ${mode} mode...`);
+                console.error('Current directory:', process.cwd());
+                console.error('Node version:', process.version);
+            }
+            earlyLogger.logCheckpoint(startup_checkpoints_1.STARTUP_CHECKPOINTS.MCP_HANDSHAKE_STARTING);
+            checkpoints.push(startup_checkpoints_1.STARTUP_CHECKPOINTS.MCP_HANDSHAKE_STARTING);
+            if (mode === 'http') {
+                if (process.env.USE_FIXED_HTTP === 'true') {
+                    const { startFixedHTTPServer } = await Promise.resolve().then(() => __importStar(require('../http-server')));
+                    await startFixedHTTPServer();
+                }
+                else {
+                    const { SingleSessionHTTPServer } = await Promise.resolve().then(() => __importStar(require('../http-server-single-session')));
+                    const server = new SingleSessionHTTPServer();
+                    const shutdown = async () => {
+                        await server.shutdown();
+                        process.exit(0);
+                    };
+                    process.on('SIGTERM', shutdown);
+                    process.on('SIGINT', shutdown);
+                    await server.start();
+                }
+            }
+            else {
+                const server = new server_1.N8NDocumentationMCPServer(undefined, earlyLogger);
+                let isShuttingDown = false;
+                const shutdown = async (signal = 'UNKNOWN') => {
+                    if (isShuttingDown)
+                        return;
+                    isShuttingDown = true;
+                    try {
+                        logger_1.logger.info(`Shutdown initiated by: ${signal}`);
+                        await server.shutdown();
+                        if (process.stdin && !process.stdin.destroyed) {
+                            process.stdin.pause();
+                            process.stdin.destroy();
+                        }
+                        setTimeout(() => {
+                            logger_1.logger.warn('Shutdown timeout exceeded, forcing exit');
+                            process.exit(0);
+                        }, 1000).unref();
+                    }
+                    catch (error) {
+                        logger_1.logger.error('Error during shutdown:', error);
+                        process.exit(1);
+                    }
+                };
+                process.on('SIGTERM', () => shutdown('SIGTERM'));
+                process.on('SIGINT', () => shutdown('SIGINT'));
+                process.on('SIGHUP', () => shutdown('SIGHUP'));
+                const isContainer = isContainerEnvironment();
+                if (!isContainer && process.stdin.readable && !process.stdin.destroyed) {
+                    try {
+                        process.stdin.on('end', () => shutdown('STDIN_END'));
+                        process.stdin.on('close', () => shutdown('STDIN_CLOSE'));
+                    }
+                    catch (error) {
+                        logger_1.logger.error('Failed to register stdin handlers, using signal handlers only:', error);
+                    }
+                }
+                await server.run();
+            }
+            earlyLogger.logCheckpoint(startup_checkpoints_1.STARTUP_CHECKPOINTS.MCP_HANDSHAKE_COMPLETE);
+            checkpoints.push(startup_checkpoints_1.STARTUP_CHECKPOINTS.MCP_HANDSHAKE_COMPLETE);
+            earlyLogger.logCheckpoint(startup_checkpoints_1.STARTUP_CHECKPOINTS.SERVER_READY);
+            checkpoints.push(startup_checkpoints_1.STARTUP_CHECKPOINTS.SERVER_READY);
+            const startupDuration = Date.now() - startTime;
+            earlyLogger.logStartupSuccess(checkpoints, startupDuration);
+            logger_1.logger.info(`Server startup completed in ${startupDuration}ms (${checkpoints.length} checkpoints passed)`);
+        }
+        catch (error) {
+            const failedCheckpoint = (0, startup_checkpoints_1.findFailedCheckpoint)(checkpoints);
+            earlyLogger.logStartupError(failedCheckpoint, error);
+            if (mode !== 'stdio') {
+                console.error('Failed to start MCP server:', error);
+                logger_1.logger.error('Failed to start MCP server', error);
+                if (error instanceof Error && error.message.includes('nodes.db not found')) {
+                    console.error('\nTo fix this issue:');
+                    console.error('1. cd to the n8n-mcp directory');
+                    console.error('2. Run: npm run build');
+                    console.error('3. Run: npm run rebuild');
+                }
+                else if (error instanceof Error && error.message.includes('NODE_MODULE_VERSION')) {
+                    console.error('\nTo fix this Node.js version mismatch:');
+                    console.error('1. cd to the n8n-mcp directory');
+                    console.error('2. Run: npm rebuild better-sqlite3');
+                    console.error('3. If that doesn\'t work, try: rm -rf node_modules && npm install');
+                }
+            }
+            process.exit(1);
+        }
+    }
+    catch (outerError) {
+        logger_1.logger.error('Critical startup error:', outerError);
+        process.exit(1);
+    }
+}
+if (require.main === module) {
+    main().catch(console.error);
+}
+//# sourceMappingURL=index.js.map

dist/mcp/server.d.ts

@@ -0,0 +1,81 @@
+import { InstanceContext } from '../types/instance-context';
+import { EarlyErrorLogger } from '../telemetry/early-error-logger';
+export declare class N8NDocumentationMCPServer {
+    private server;
+    private db;
+    private repository;
+    private templateService;
+    private initialized;
+    private cache;
+    private clientInfo;
+    private instanceContext?;
+    private previousTool;
+    private previousToolTimestamp;
+    private earlyLogger;
+    private disabledToolsCache;
+    constructor(instanceContext?: InstanceContext, earlyLogger?: EarlyErrorLogger);
+    close(): Promise<void>;
+    private initializeDatabase;
+    private initializeInMemorySchema;
+    private parseSQLStatements;
+    private ensureInitialized;
+    private dbHealthChecked;
+    private validateDatabaseHealth;
+    private getDisabledTools;
+    private setupHandlers;
+    private sanitizeValidationResult;
+    private validateToolParams;
+    private validateToolParamsBasic;
+    private validateExtractedArgs;
+    private listNodes;
+    private getNodeInfo;
+    private searchNodes;
+    private searchNodesFTS;
+    private searchNodesFuzzy;
+    private calculateFuzzyScore;
+    private getEditDistance;
+    private searchNodesLIKE;
+    private calculateRelevance;
+    private calculateRelevanceScore;
+    private rankSearchResults;
+    private listAITools;
+    private getNodeDocumentation;
+    private getDatabaseStatistics;
+    private getNodeEssentials;
+    private getNode;
+    private handleInfoMode;
+    private handleVersionMode;
+    private getVersionSummary;
+    private getVersionHistory;
+    private compareVersions;
+    private getBreakingChanges;
+    private getMigrations;
+    private enrichPropertyWithTypeInfo;
+    private enrichPropertiesWithTypeInfo;
+    private searchNodeProperties;
+    private getPropertyValue;
+    private listTasks;
+    private validateNodeConfig;
+    private getPropertyDependencies;
+    private getNodeAsToolInfo;
+    private getOutputDescriptions;
+    private getCommonAIToolUseCases;
+    private buildToolVariantGuidance;
+    private getAIToolExamples;
+    private validateNodeMinimal;
+    private getToolsDocumentation;
+    connect(transport: any): Promise<void>;
+    private listTemplates;
+    private listNodeTemplates;
+    private getTemplate;
+    private searchTemplates;
+    private getTemplatesForTask;
+    private searchTemplatesByMetadata;
+    private getTaskDescription;
+    private validateWorkflow;
+    private validateWorkflowConnections;
+    private validateWorkflowExpressions;
+    run(): Promise<void>;
+    shutdown(): Promise<void>;
+}
+//# sourceMappingURL=server.d.ts.map

dist/mcp/server.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"server.d.ts","sourceRoot":"","sources":["../../src/mcp/server.ts"],"names":[],"mappings":"AAsCA,OAAO,EAAE,eAAe,EAAE,MAAM,2BAA2B,CAAC;AAE5D,OAAO,EAAE,gBAAgB,EAAE,MAAM,iCAAiC,CAAC;AAgGnE,qBAAa,yBAAyB;IACpC,OAAO,CAAC,MAAM,CAAS;IACvB,OAAO,CAAC,EAAE,CAAgC;IAC1C,OAAO,CAAC,UAAU,CAA+B;IACjD,OAAO,CAAC,eAAe,CAAgC;IACvD,OAAO,CAAC,WAAW,CAAgB;IACnC,OAAO,CAAC,KAAK,CAAqB;IAClC,OAAO,CAAC,UAAU,CAAa;IAC/B,OAAO,CAAC,eAAe,CAAC,CAAkB;IAC1C,OAAO,CAAC,YAAY,CAAuB;IAC3C,OAAO,CAAC,qBAAqB,CAAsB;IACnD,OAAO,CAAC,WAAW,CAAiC;IACpD,OAAO,CAAC,kBAAkB,CAA4B;gBAE1C,eAAe,CAAC,EAAE,eAAe,EAAE,WAAW,CAAC,EAAE,gBAAgB;IAiGvE,KAAK,IAAI,OAAO,CAAC,IAAI,CAAC;YA6Bd,kBAAkB;YAwClB,wBAAwB;IA0BtC,OAAO,CAAC,kBAAkB;YA6CZ,iBAAiB;IAa/B,OAAO,CAAC,eAAe,CAAkB;YAE3B,sBAAsB;IAgDpC,OAAO,CAAC,gBAAgB;IAqCxB,OAAO,CAAC,aAAa;IAoTrB,OAAO,CAAC,wBAAwB;IAoFhC,OAAO,CAAC,kBAAkB;IAqE1B,OAAO,CAAC,uBAAuB;IAwB/B,OAAO,CAAC,qBAAqB;YAgTf,SAAS;YA2DT,WAAW;YAkFX,WAAW;YAyCX,cAAc;YAyKd,gBAAgB;IAqD9B,OAAO,CAAC,mBAAmB;IAwE3B,OAAO,CAAC,eAAe;YAsBT,eAAe;IAqI7B,OAAO,CAAC,kBAAkB;IAQ1B,OAAO,CAAC,uBAAuB;IA0D/B,OAAO,CAAC,iBAAiB;YAqFX,WAAW;YAgCX,oBAAoB;YA2EpB,qBAAqB;YAwDrB,iBAAiB;YAiKjB,OAAO;YAgDP,cAAc;YAwFd,iBAAiB;IAqC/B,OAAO,CAAC,iBAAiB;IA0BzB,OAAO,CAAC,iBAAiB;IA0BzB,OAAO,CAAC,eAAe;IAwCvB,OAAO,CAAC,kBAAkB;IAiC1B,OAAO,CAAC,aAAa;IAoCrB,OAAO,CAAC,0BAA0B;IAgClC,OAAO,CAAC,4BAA4B;YAKtB,oBAAoB;IAsDlC,OAAO,CAAC,gBAAgB;YAiBV,SAAS;YA6CT,kBAAkB;YAqElB,uBAAuB;YAsDvB,iBAAiB;IAqE/B,OAAO,CAAC,qBAAqB;IA8C7B,OAAO,CAAC,uBAAuB;IA4D/B,OAAO,CAAC,wBAAwB;IAkChC,OAAO,CAAC,iBAAiB;YAoDX,mBAAmB;YAoEnB,qBAAqB;IAS7B,OAAO,CAAC,SAAS,EAAE,GAAG,GAAG,OAAO,CAAC,IAAI,CAAC;YAS9B,aAAa;YAcb,iBAAiB;YAoBjB,WAAW;YAwBX,eAAe;YAqBf,mBAAmB;YAwBnB,yBAAyB;IA4CvC,OAAO,CAAC,kBAAkB;YAiBZ,gBAAgB;YA6HhB,2BAA2B;YAiE3B,2BAA2B;IAyEnC,GAAG,IAAI,OAAO,CAAC,IAAI,CAAC;IA0BpB,QAAQ,IAAI,OAAO,CAAC,IAAI,CAAC;CAuBhC"}

dist/mcp/stdio-wrapper.d.ts

@@ -0,0 +1,3 @@
+#!/usr/bin/env node
+export {};
+//# sourceMappingURL=stdio-wrapper.d.ts.map

dist/mcp/stdio-wrapper.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"stdio-wrapper.d.ts","sourceRoot":"","sources":["../../src/mcp/stdio-wrapper.ts"],"names":[],"mappings":""}

dist/mcp/stdio-wrapper.js

@@ -0,0 +1,81 @@
+#!/usr/bin/env node
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+process.env.MCP_MODE = 'stdio';
+process.env.DISABLE_CONSOLE_OUTPUT = 'true';
+process.env.LOG_LEVEL = 'error';
+const originalConsoleLog = console.log;
+const originalConsoleError = console.error;
+const originalConsoleWarn = console.warn;
+const originalConsoleInfo = console.info;
+const originalConsoleDebug = console.debug;
+const originalConsoleTrace = console.trace;
+const originalConsoleDir = console.dir;
+const originalConsoleTime = console.time;
+const originalConsoleTimeEnd = console.timeEnd;
+console.log = () => { };
+console.error = () => { };
+console.warn = () => { };
+console.info = () => { };
+console.debug = () => { };
+console.trace = () => { };
+console.dir = () => { };
+console.time = () => { };
+console.timeEnd = () => { };
+console.timeLog = () => { };
+console.group = () => { };
+console.groupEnd = () => { };
+console.table = () => { };
+console.clear = () => { };
+console.count = () => { };
+console.countReset = () => { };
+const server_1 = require("./server");
+let server = null;
+async function main() {
+    try {
+        server = new server_1.N8NDocumentationMCPServer();
+        await server.run();
+    }
+    catch (error) {
+        originalConsoleError('Fatal error:', error);
+        process.exit(1);
+    }
+}
+process.on('uncaughtException', (error) => {
+    originalConsoleError('Uncaught exception:', error);
+    process.exit(1);
+});
+process.on('unhandledRejection', (reason) => {
+    originalConsoleError('Unhandled rejection:', reason);
+    process.exit(1);
+});
+let isShuttingDown = false;
+async function shutdown(signal) {
+    if (isShuttingDown)
+        return;
+    isShuttingDown = true;
+    originalConsoleError(`Received ${signal}, shutting down gracefully...`);
+    try {
+        if (server) {
+            await server.shutdown();
+        }
+    }
+    catch (error) {
+        originalConsoleError('Error during shutdown:', error);
+    }
+    process.stdin.pause();
+    process.stdin.destroy();
+    setTimeout(() => {
+        process.exit(0);
+    }, 500).unref();
+    process.exit(0);
+}
+process.on('SIGTERM', () => void shutdown('SIGTERM'));
+process.on('SIGINT', () => void shutdown('SIGINT'));
+process.on('SIGHUP', () => void shutdown('SIGHUP'));
+process.stdin.on('end', () => {
+    originalConsoleError('stdin closed, shutting down...');
+    void shutdown('STDIN_CLOSE');
+});
+main();
+//# sourceMappingURL=stdio-wrapper.js.map

dist/mcp/stdio-wrapper.js.map

@@ -0,0 +1 @@
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dist/mcp/tool-docs/configuration/get-node.d.ts

@@ -0,0 +1,3 @@
+import { ToolDocumentation } from '../types';
+export declare const getNodeDoc: ToolDocumentation;
+//# sourceMappingURL=get-node.d.ts.map

dist/mcp/tool-docs/configuration/get-node.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"get-node.d.ts","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/configuration/get-node.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,iBAAiB,EAAE,MAAM,UAAU,CAAC;AAE7C,eAAO,MAAM,UAAU,EAAE,iBAqFxB,CAAC"}

dist/mcp/tool-docs/configuration/get-node.js

@@ -0,0 +1,90 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getNodeDoc = void 0;
+exports.getNodeDoc = {
+    name: 'get_node',
+    category: 'configuration',
+    essentials: {
+        description: 'Unified node information tool with progressive detail levels and multiple modes. Get node schema, docs, search properties, or version info.',
+        keyParameters: ['nodeType', 'detail', 'mode', 'includeTypeInfo', 'includeExamples'],
+        example: 'get_node({nodeType: "nodes-base.httpRequest", detail: "standard"})',
+        performance: 'Instant (<10ms) for minimal/standard, moderate for full',
+        tips: [
+            'Use detail="standard" (default) for most tasks - shows required fields',
+            'Use mode="docs" for readable markdown documentation',
+            'Use mode="search_properties" with propertyQuery to find specific fields',
+            'Use mode="versions" to check version history and breaking changes',
+            'Add includeExamples=true to get real-world configuration examples'
+        ]
+    },
+    full: {
+        description: `**Detail Levels (mode="info", default):**
+- minimal (~200 tokens): Basic metadata only - nodeType, displayName, description, category
+- standard (~1-2K tokens): Essential properties + operations - recommended for most tasks
+- full (~3-8K tokens): Complete node schema - use only when standard insufficient
+
+**Operation Modes:**
+- info (default): Node schema with configurable detail level
+- docs: Readable markdown documentation with examples and patterns
+- search_properties: Find specific properties within a node
+- versions: List all available versions with breaking changes summary
+- compare: Compare two versions with property-level changes
+- breaking: Show only breaking changes between versions
+- migrations: Show auto-migratable changes between versions`,
+        parameters: {
+            nodeType: { type: 'string', required: true, description: 'Full node type with prefix: "nodes-base.httpRequest" or "nodes-langchain.agent"' },
+            detail: { type: 'string', required: false, description: 'Detail level for mode=info: "minimal", "standard" (default), "full"' },
+            mode: { type: 'string', required: false, description: 'Operation mode: "info" (default), "docs", "search_properties", "versions", "compare", "breaking", "migrations"' },
+            includeTypeInfo: { type: 'boolean', required: false, description: 'Include type structure metadata (validation rules, JS types). Adds ~80-120 tokens per property' },
+            includeExamples: { type: 'boolean', required: false, description: 'Include real-world configuration examples from templates. Adds ~200-400 tokens per example' },
+            propertyQuery: { type: 'string', required: false, description: 'For mode=search_properties: search term to find properties (e.g., "auth", "header", "body")' },
+            maxPropertyResults: { type: 'number', required: false, description: 'For mode=search_properties: max results (default 20)' },
+            fromVersion: { type: 'string', required: false, description: 'For compare/breaking/migrations modes: source version (e.g., "1.0")' },
+            toVersion: { type: 'string', required: false, description: 'For compare mode: target version (e.g., "2.0"). Defaults to latest' }
+        },
+        returns: `Depends on mode:
+- info: Node schema with properties based on detail level
+- docs: Markdown documentation string
+- search_properties: Array of matching property paths with descriptions
+- versions: Version history with breaking changes flags
+- compare/breaking/migrations: Version comparison details`,
+        examples: [
+            '// Standard detail (recommended for AI agents)\nget_node({nodeType: "nodes-base.httpRequest"})',
+            '// Minimal for quick metadata check\nget_node({nodeType: "nodes-base.slack", detail: "minimal"})',
+            '// Full detail with examples\nget_node({nodeType: "nodes-base.googleSheets", detail: "full", includeExamples: true})',
+            '// Get readable documentation\nget_node({nodeType: "nodes-base.webhook", mode: "docs"})',
+            '// Search for authentication properties\nget_node({nodeType: "nodes-base.httpRequest", mode: "search_properties", propertyQuery: "auth"})',
+            '// Check version history\nget_node({nodeType: "nodes-base.executeWorkflow", mode: "versions"})',
+            '// Compare specific versions\nget_node({nodeType: "nodes-base.httpRequest", mode: "compare", fromVersion: "3.0", toVersion: "4.1"})'
+        ],
+        useCases: [
+            'Configure nodes for workflow building (use detail=standard)',
+            'Find specific configuration options (use mode=search_properties)',
+            'Get human-readable node documentation (use mode=docs)',
+            'Check for breaking changes before version upgrades (use mode=breaking)',
+            'Understand complex types with includeTypeInfo=true'
+        ],
+        performance: `Token costs by detail level:
+- minimal: ~200 tokens
+- standard: ~1000-2000 tokens (default)
+- full: ~3000-8000 tokens
+- includeTypeInfo: +80-120 tokens per property
+- includeExamples: +200-400 tokens per example
+- Version modes: ~400-1200 tokens`,
+        bestPractices: [
+            'Start with detail="standard" - it covers 95% of use cases',
+            'Only use detail="full" if standard is missing required properties',
+            'Use mode="docs" when explaining nodes to users',
+            'Combine includeTypeInfo=true for complex nodes (filter, resourceMapper)',
+            'Check version history before configuring versioned nodes'
+        ],
+        pitfalls: [
+            'detail="full" returns large responses (~100KB) - use sparingly',
+            'Node type must include prefix (nodes-base. or nodes-langchain.)',
+            'includeExamples only works with mode=info and detail=standard',
+            'Version modes require nodes with multiple versions in database'
+        ],
+        relatedTools: ['search_nodes', 'validate_node', 'validate_workflow']
+    }
+};
+//# sourceMappingURL=get-node.js.map

dist/mcp/tool-docs/configuration/get-node.js.map

@@ -0,0 +1 @@
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dist/mcp/tool-docs/configuration/index.d.ts

@@ -0,0 +1,2 @@
+export { getNodeDoc } from './get-node';
+//# sourceMappingURL=index.d.ts.map

dist/mcp/tool-docs/configuration/index.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/configuration/index.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,UAAU,EAAE,MAAM,YAAY,CAAC"}

dist/mcp/tool-docs/configuration/index.js

@@ -0,0 +1,6 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getNodeDoc = void 0;
+var get_node_1 = require("./get-node");
+Object.defineProperty(exports, "getNodeDoc", { enumerable: true, get: function () { return get_node_1.getNodeDoc; } });
+//# sourceMappingURL=index.js.map

dist/mcp/tool-docs/configuration/index.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/configuration/index.ts"],"names":[],"mappings":";;;AAAA,uCAAwC;AAA/B,sGAAA,UAAU,OAAA"}

dist/mcp/tool-docs/discovery/index.d.ts

@@ -0,0 +1,2 @@
+export { searchNodesDoc } from './search-nodes';
+//# sourceMappingURL=index.d.ts.map

dist/mcp/tool-docs/discovery/index.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/discovery/index.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,cAAc,EAAE,MAAM,gBAAgB,CAAC"}

dist/mcp/tool-docs/discovery/index.js

@@ -0,0 +1,6 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.searchNodesDoc = void 0;
+var search_nodes_1 = require("./search-nodes");
+Object.defineProperty(exports, "searchNodesDoc", { enumerable: true, get: function () { return search_nodes_1.searchNodesDoc; } });
+//# sourceMappingURL=index.js.map