fix: use lowercase for community node names to match n8n convention (#529 )

* fix: use lowercase for community node names to match n8n convention Community nodes in n8n use lowercase node class names (e.g., chatwoot not Chatwoot). The extractNodeNameFromPackage method was incorrectly capitalizing node names, causing validation failures. Changes: - Fix extractNodeNameFromPackage to use lowercase instead of capitalizing - Add case-insensitive fallback in getNode for robustness - Update tests to expect lowercase node names - Bump version to 2.32.1 Fixes the case sensitivity bug where MCP stored Chatwoot but n8n expected chatwoot. Conceived by Romuald Członkowski - www.aiadvisors.pl/en 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * chore: rebuild community nodes database with lowercase names Rebuilt database after fixing extractNodeNameFromPackage to use lowercase node names matching n8n convention. Conceived by Romuald Członkowski - www.aiadvisors.pl/en 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> --------- Co-authored-by: Romuald Członkowski <romualdczlonkowski@MacBook-Pro-Romuald.local> Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
feat: add community nodes support (Issues #23 , #490 ) (#527 )
2026-01-30 14:32:04 +00:00 · 2026-01-08 08:27:56 +01:00 · 2026-01-08 07:02:56 +01:00 · 2026-01-07 18:09:55 +01:00 · 2026-01-07 13:42:16 +01:00 · 2026-01-06 13:18:56 +01:00
168 changed files with 13010 additions and 11358 deletions
--- a/.env.example
+++ b/.env.example
@@ -37,9 +37,11 @@ MCP_SERVER_HOST=localhost
 # Server mode: stdio (local) or http (remote)
 MCP_MODE=stdio

-# Use fixed HTTP implementation (recommended for stability)
-# Set to true to bypass StreamableHTTPServerTransport issues
-USE_FIXED_HTTP=true
+# DEPRECATED: USE_FIXED_HTTP is deprecated as of v2.31.8
+# The fixed HTTP implementation does not support SSE streaming required by
+# clients like OpenAI Codex. Use the default SingleSessionHTTPServer instead.
+# See: https://github.com/czlonkowski/n8n-mcp/issues/524
+# USE_FIXED_HTTP=true  # DO NOT USE - deprecated

 # HTTP Server Configuration (only used when MCP_MODE=http)
 PORT=3000
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -311,14 +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
      
@@ -396,7 +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
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -40,7 +40,7 @@ permissions:
 jobs:
  test:
    runs-on: ubuntu-latest
-    timeout-minutes: 10  # Add a 10-minute timeout to prevent hanging
+    timeout-minutes: 15  # Increased from 10 to accommodate larger database with community nodes
    steps:
      - uses: actions/checkout@v4
      
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
--- a/Dockerfile.railway
+++ b/Dockerfile.railway
@@ -74,7 +74,8 @@ ENV AUTH_TOKEN="REPLACE_THIS_AUTH_TOKEN_32_CHARS_MIN_abcdefgh"
 ENV NODE_ENV=production
 ENV IS_DOCKER=true
 ENV MCP_MODE=http
-ENV USE_FIXED_HTTP=true
+# NOTE: USE_FIXED_HTTP is deprecated. SingleSessionHTTPServer is now the default.
+# See: https://github.com/czlonkowski/n8n-mcp/issues/524
 ENV LOG_LEVEL=info
 ENV TRUST_PROXY=1
 ENV HOST=0.0.0.0
--- a/README.md
+++ b/README.md
@@ -5,23 +5,24 @@
 [![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-1.122.4-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 545 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 1,084 workflow automation nodes (537 core + 547 community).

 ## 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:

- 📚 **543 n8n nodes** from both n8n-nodes-base and @n8n/n8n-nodes-langchain
+- 📚 **1,084 n8n nodes** - 537 core nodes + 547 community nodes (301 verified)
 - 🔧 **Node properties** - 99% coverage with detailed schemas
 - ⚡ **Node operations** - 63.6% coverage of available actions
 - 📄 **Documentation** - 87% coverage from official n8n docs (including AI nodes)
- 🤖 **AI tools** - 271 AI-capable nodes detected with full documentation
+- 🤖 **AI tools** - 265 AI-capable tool variants detected with full documentation
 - 💡 **Real-world examples** - 2,646 pre-extracted configurations from popular templates
 - 🎯 **Template library** - 2,709 workflow templates with 100% metadata coverage
+- 🌐 **Community nodes** - Search verified community integrations with `source` filter (NEW!)


 ## ⚠️ Important Safety Warning
@@ -940,7 +941,7 @@ Once connected, Claude can use these powerful tools:

 ### Core Tools (7 tools)
 - **`tools_documentation`** - Get documentation for any MCP tool (START HERE!)
- **`search_nodes`** - Full-text search across all nodes. Use `includeExamples: true` for real-world configurations
+- **`search_nodes`** - Full-text search across all nodes. Use `source: 'community'|'verified'` for community nodes, `includeExamples: true` for configs
 - **`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
@@ -1024,6 +1025,18 @@ search_nodes({
  includeExamples: true       // Returns top 2 configs per node
 })

+// Search community nodes only
+search_nodes({
+  query: "scraping",
+  source: "community"         // Options: all, core, community, verified
+})
+
+// Search verified community nodes
+search_nodes({
+  query: "pdf",
+  source: "verified"          // Only verified community integrations
+})
+
 // Validate node configuration
 validate_node({
  nodeType: "nodes-base.httpRequest",
@@ -1121,17 +1134,18 @@ npm run dev:http       # HTTP dev mode

 ## 📊 Metrics & Coverage

-Current database coverage (n8n v1.117.2):
+Current database coverage (n8n v2.2.3):

- ✅ **541/541** nodes loaded (100%)
- ✅ **541** nodes with properties (100%)
- ✅ **470** nodes with documentation (87%)
- ✅ **271** AI-capable tools detected
+- ✅ **1,084 total nodes** - 537 core + 547 community
+- ✅ **301 verified** community nodes from n8n Strapi API
+- ✅ **246 popular** npm community packages indexed
+- ✅ **470** nodes with documentation (87% core coverage)
+- ✅ **265** AI-capable tool variants detected
 - ✅ **2,646** pre-extracted template configurations
 - ✅ **2,709** workflow templates available (100% metadata coverage)
 - ✅ **AI Agent & LangChain nodes** fully documented
 - ⚡ **Average response time**: ~12ms
- 💾 **Database size**: ~68MB (includes templates with metadata)
+- 💾 **Database size**: ~70MB (includes templates and community nodes)

 ## 🔄 Recent Updates

--- a/data/nodes.db
+++ b/data/nodes.db
--- a/dist/database/node-repository.d.ts
+++ b/dist/database/node-repository.d.ts
@@ -15,6 +15,10 @@ export declare class NodeRepository {
    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;
--- a/dist/database/node-repository.d.ts.map
+++ b/dist/database/node-repository.d.ts.map
@@ -1 +1 @@
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+{"version":3,"file":"node-repository.d.ts","sourceRoot":"","sources":["../../src/database/node-repository.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,eAAe,EAAE,MAAM,oBAAoB,CAAC;AACrD,OAAO,EAAE,UAAU,EAAE,MAAM,wBAAwB,CAAC;AACpD,OAAO,EAAE,oBAAoB,EAAE,MAAM,oCAAoC,CAAC;AAG1E,qBAAa,cAAc;IACzB,OAAO,CAAC,EAAE,CAAkB;gBAEhB,WAAW,EAAE,eAAe,GAAG,oBAAoB;IAY/D,QAAQ,CAAC,IAAI,EAAE,UAAU,GAAG,IAAI;IAwChC,OAAO,CAAC,QAAQ,EAAE,MAAM,GAAG,GAAG;IA2B9B,UAAU,IAAI,GAAG,EAAE;IAgBnB,OAAO,CAAC,aAAa;IASrB,UAAU,CAAC,IAAI,EAAE,UAAU,GAAG,IAAI;IAIlC,aAAa,CAAC,QAAQ,EAAE,MAAM,GAAG,GAAG;IAIpC,kBAAkB,CAAC,QAAQ,EAAE,MAAM,GAAG,GAAG,EAAE;IAqB3C,WAAW,CAAC,KAAK,EAAE,MAAM,EAAE,IAAI,GAAE,IAAI,GAAG,KAAK,GAAG,OAAc,EAAE,KAAK,GAAE,MAAW,GAAG,GAAG,EAAE;IAwC1F,WAAW,CAAC,KAAK,CAAC,EAAE,MAAM,GAAG,GAAG,EAAE;IAUlC,YAAY,IAAI,MAAM;IAKtB,cAAc,IAAI,GAAG,EAAE;IAOvB,cAAc,CAAC,YAAY,EAAE,MAAM,GAAG,GAAG,GAAG,IAAI;IAYhD,yBAAyB,CAAC,YAAY,EAAE,MAAM,GAAG,GAAG,GAAG,IAAI;IAY3D,eAAe,IAAI,GAAG,EAAE;IAoBxB,mBAAmB,IAAI,MAAM;IAK7B,iBAAiB,CAAC,WAAW,EAAE,MAAM,GAAG,GAAG,EAAE;IAS7C,oBAAoB,CAAC,QAAQ,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,EAAE,UAAU,GAAE,MAAW,GAAG,GAAG,EAAE;IAmCrF,OAAO,CAAC,YAAY;IA4BpB,iBAAiB,CAAC,QAAQ,EAAE,MAAM,EAAE,QAAQ,CAAC,EAAE,MAAM,GAAG,GAAG,EAAE;IAmD7D,gBAAgB,CAAC,QAAQ,EAAE,MAAM,GAAG,GAAG,EAAE;IAmBzC,wBAAwB,CAAC,QAAQ,EAAE,MAAM,EAAE,QAAQ,EAAE,MAAM,GAAG,GAAG,EAAE;IAyBnE,gBAAgB,IAAI,GAAG,CAAC,MAAM,EAAE,GAAG,EAAE,CAAC;IAiBtC,eAAe,IAAI,GAAG,CAAC,MAAM,EAAE,GAAG,EAAE,CAAC;IAiBrC,uBAAuB,CAAC,QAAQ,EAAE,MAAM,GAAG,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC;IAwB9D,8BAA8B,CAAC,QAAQ,EAAE,MAAM,EAAE,QAAQ,CAAC,EAAE,MAAM,GAAG,MAAM,GAAG,SAAS;IAuDvF,eAAe,CAAC,WAAW,EAAE;QAC3B,QAAQ,EAAE,MAAM,CAAC;QACjB,OAAO,EAAE,MAAM,CAAC;QAChB,WAAW,EAAE,MAAM,CAAC;QACpB,WAAW,EAAE,MAAM,CAAC;QACpB,WAAW,CAAC,EAAE,MAAM,CAAC;QACrB,QAAQ,CAAC,EAAE,MAAM,CAAC;QAClB,YAAY,CAAC,EAAE,OAAO,CAAC;QACvB,gBAAgB,CAAC,EAAE,GAAG,CAAC;QACvB,UAAU,CAAC,EAAE,GAAG,CAAC;QACjB,mBAAmB,CAAC,EAAE,GAAG,CAAC;QAC1B,OAAO,CAAC,EAAE,GAAG,CAAC;QACd,iBAAiB,CAAC,EAAE,MAAM,CAAC;QAC3B,eAAe,CAAC,EAAE,GAAG,EAAE,CAAC;QACxB,oBAAoB,CAAC,EAAE,MAAM,EAAE,CAAC;QAChC,eAAe,CAAC,EAAE,MAAM,EAAE,CAAC;QAC3B,UAAU,CAAC,EAAE,IAAI,CAAC;KACnB,GAAG,IAAI;IAkCR,eAAe,CAAC,QAAQ,EAAE,MAAM,GAAG,GAAG,EAAE;IAexC,oBAAoB,CAAC,QAAQ,EAAE,MAAM,GAAG,GAAG,GAAG,IAAI;IAgBlD,cAAc,CAAC,QAAQ,EAAE,MAAM,EAAE,OAAO,EAAE,MAAM,GAAG,GAAG,GAAG,IAAI;IAe7D,kBAAkB,CAAC,UAAU,EAAE;QAC7B,QAAQ,EAAE,MAAM,CAAC;QACjB,WAAW,EAAE,MAAM,CAAC;QACpB,SAAS,EAAE,MAAM,CAAC;QAClB,YAAY,EAAE,MAAM,CAAC;QACrB,UAAU,EAAE,OAAO,GAAG,SAAS,GAAG,SAAS,GAAG,cAAc,GAAG,qBAAqB,GAAG,iBAAiB,CAAC;QACzG,UAAU,CAAC,EAAE,OAAO,CAAC;QACrB,QAAQ,CAAC,EAAE,MAAM,CAAC;QAClB,QAAQ,CAAC,EAAE,MAAM,CAAC;QAClB,aAAa,CAAC,EAAE,MAAM,CAAC;QACvB,cAAc,CAAC,EAAE,OAAO,CAAC;QACzB,iBAAiB,CAAC,EAAE,GAAG,CAAC;QACxB,QAAQ,CAAC,EAAE,KAAK,GAAG,QAAQ,GAAG,MAAM,CAAC;KACtC,GAAG,IAAI;IA4BR,kBAAkB,CAAC,QAAQ,EAAE,MAAM,EAAE,WAAW,EAAE,MAAM,EAAE,SAAS,EAAE,MAAM,GAAG,GAAG,EAAE;IAgBnF,kBAAkB,CAAC,QAAQ,EAAE,MAAM,EAAE,WAAW,EAAE,MAAM,EAAE,SAAS,CAAC,EAAE,MAAM,GAAG,GAAG,EAAE;IA4BpF,wBAAwB,CAAC,QAAQ,EAAE,MAAM,EAAE,WAAW,EAAE,MAAM,EAAE,SAAS,EAAE,MAAM,GAAG,GAAG,EAAE;IAkBzF,qBAAqB,CAAC,QAAQ,EAAE,MAAM,EAAE,WAAW,EAAE,MAAM,EAAE,SAAS,EAAE,MAAM,GAAG,OAAO;IAcxF,sBAAsB,IAAI,MAAM;IAWhC,OAAO,CAAC,mBAAmB;IA0B3B,OAAO,CAAC,sBAAsB;IA0B9B,qBAAqB,CAAC,IAAI,EAAE;QAC1B,UAAU,EAAE,MAAM,CAAC;QACnB,aAAa,EAAE,MAAM,CAAC;QACtB,YAAY,EAAE,MAAM,CAAC;QACrB,gBAAgB,EAAE,GAAG,CAAC;QACtB,OAAO,EAAE,gBAAgB,GAAG,aAAa,GAAG,SAAS,CAAC;QACtD,UAAU,CAAC,EAAE,GAAG,EAAE,CAAC;QACnB,QAAQ,CAAC,EAAE,MAAM,EAAE,CAAC;QACpB,QAAQ,CAAC,EAAE,GAAG,CAAC;KAChB,GAAG,MAAM;IAyBV,mBAAmB,CAAC,UAAU,EAAE,MAAM,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,GAAG,EAAE;IAoB9D,kBAAkB,CAAC,SAAS,EAAE,MAAM,GAAG,GAAG,GAAG,IAAI;IAYjD,wBAAwB,CAAC,UAAU,EAAE,MAAM,GAAG,GAAG,GAAG,IAAI;IAexD,qBAAqB,CAAC,SAAS,EAAE,MAAM,GAAG,IAAI;IAS9C,kCAAkC,CAAC,UAAU,EAAE,MAAM,GAAG,MAAM;IAY9D,qBAAqB,CAAC,UAAU,EAAE,MAAM,EAAE,SAAS,EAAE,MAAM,GAAG,MAAM;IAiCpE,wBAAwB,IAAI,MAAM;IAWlC,uBAAuB,CAAC,UAAU,EAAE,MAAM,GAAG,MAAM;IAWnD,sBAAsB,IAAI,GAAG;IAwC7B,OAAO,CAAC,uBAAuB;CAchC"}
--- a/dist/database/node-repository.js
+++ b/dist/database/node-repository.js
@@ -16,12 +16,13 @@ class NodeRepository {
      INSERT OR REPLACE INTO nodes (
        node_type, package_name, display_name, description,
        category, development_style, is_ai_tool, is_trigger,
-        is_webhook, is_versioned, version, documentation,
+        is_webhook, is_versioned, is_tool_variant, tool_variant_of,
+        has_tool_variant, version, documentation,
        properties_schema, operations, credentials_required,
        outputs, output_names
-      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+      ) 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.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);
+        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);
@@ -122,6 +123,40 @@ class NodeRepository {
    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 = ?
@@ -170,6 +205,9 @@ class NodeRepository {
            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, []),
--- a/dist/database/node-repository.js.map
+++ b/dist/database/node-repository.js.map
--- a/dist/http-server-single-session.d.ts.map
+++ b/dist/http-server-single-session.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"http-server-single-session.d.ts","sourceRoot":"","sources":["../src/http-server-single-session.ts"],"names":[],"mappings":";AAMA,OAAO,OAAO,MAAM,SAAS,CAAC;AAoB9B,OAAO,EAAE,eAAe,EAA2B,MAAM,0BAA0B,CAAC;AACpF,OAAO,EAAE,YAAY,EAAE,MAAM,uBAAuB,CAAC;AAuErD,qBAAa,uBAAuB;IAElC,OAAO,CAAC,UAAU,CAA8D;IAChF,OAAO,CAAC,OAAO,CAA0D;IACzE,OAAO,CAAC,eAAe,CAAsE;IAC7F,OAAO,CAAC,eAAe,CAA4D;IACnF,OAAO,CAAC,kBAAkB,CAAyC;IACnE,OAAO,CAAC,OAAO,CAAwB;IACvC,OAAO,CAAC,cAAc,CAAwB;IAC9C,OAAO,CAAC,aAAa,CAAM;IAC3B,OAAO,CAAC,cAAc,CAAkB;IACxC,OAAO,CAAC,SAAS,CAAuB;IACxC,OAAO,CAAC,YAAY,CAA+B;;IAcnD,OAAO,CAAC,mBAAmB;IAmB3B,OAAO,CAAC,sBAAsB;YAqChB,aAAa;IA2B3B,OAAO,CAAC,qBAAqB;IAO7B,OAAO,CAAC,gBAAgB;IAkBxB,OAAO,CAAC,gBAAgB;IASxB,OAAO,CAAC,sBAAsB;IAkC9B,OAAO,CAAC,mBAAmB;YASb,oBAAoB;YAwBpB,oBAAoB;IAwBlC,OAAO,CAAC,iBAAiB;IAsBzB,OAAO,CAAC,aAAa;IA2BrB,OAAO,CAAC,mBAAmB;IAoDrB,aAAa,CACjB,GAAG,EAAE,OAAO,CAAC,OAAO,EACpB,GAAG,EAAE,OAAO,CAAC,QAAQ,EACrB,eAAe,CAAC,EAAE,eAAe,GAChC,OAAO,CAAC,IAAI,CAAC;YAmOF,eAAe;IA8C7B,OAAO,CAAC,SAAS;IAYjB,OAAO,CAAC,gBAAgB;IASlB,KAAK,IAAI,OAAO,CAAC,IAAI,CAAC;IAgnBtB,QAAQ,IAAI,OAAO,CAAC,IAAI,CAAC;IAkD/B,cAAc,IAAI;QAChB,MAAM,EAAE,OAAO,CAAC;QAChB,SAAS,CAAC,EAAE,MAAM,CAAC;QACnB,GAAG,CAAC,EAAE,MAAM,CAAC;QACb,QAAQ,CAAC,EAAE;YACT,KAAK,EAAE,MAAM,CAAC;YACd,MAAM,EAAE,MAAM,CAAC;YACf,OAAO,EAAE,MAAM,CAAC;YAChB,GAAG,EAAE,MAAM,CAAC;YACZ,UAAU,EAAE,MAAM,EAAE,CAAC;SACtB,CAAC;KACH;IAmDM,kBAAkB,IAAI,YAAY,EAAE;IAoEpC,mBAAmB,CAAC,QAAQ,EAAE,YAAY,EAAE,GAAG,MAAM;CAsG7D"}
+{"version":3,"file":"http-server-single-session.d.ts","sourceRoot":"","sources":["../src/http-server-single-session.ts"],"names":[],"mappings":";AAMA,OAAO,OAAO,MAAM,SAAS,CAAC;AAoB9B,OAAO,EAAE,eAAe,EAA2B,MAAM,0BAA0B,CAAC;AACpF,OAAO,EAAE,YAAY,EAAE,MAAM,uBAAuB,CAAC;AAuErD,qBAAa,uBAAuB;IAElC,OAAO,CAAC,UAAU,CAA8D;IAChF,OAAO,CAAC,OAAO,CAA0D;IACzE,OAAO,CAAC,eAAe,CAAsE;IAC7F,OAAO,CAAC,eAAe,CAA4D;IACnF,OAAO,CAAC,kBAAkB,CAAyC;IACnE,OAAO,CAAC,OAAO,CAAwB;IACvC,OAAO,CAAC,cAAc,CAAwB;IAC9C,OAAO,CAAC,aAAa,CAAM;IAC3B,OAAO,CAAC,cAAc,CAAkB;IACxC,OAAO,CAAC,SAAS,CAAuB;IACxC,OAAO,CAAC,YAAY,CAA+B;;IAcnD,OAAO,CAAC,mBAAmB;IAmB3B,OAAO,CAAC,sBAAsB;YAqChB,aAAa;IAuC3B,OAAO,CAAC,qBAAqB;IAO7B,OAAO,CAAC,gBAAgB;IAkBxB,OAAO,CAAC,gBAAgB;IASxB,OAAO,CAAC,sBAAsB;IAkC9B,OAAO,CAAC,mBAAmB;YASb,oBAAoB;YAwBpB,oBAAoB;IAwBlC,OAAO,CAAC,iBAAiB;IAsBzB,OAAO,CAAC,aAAa;IA2BrB,OAAO,CAAC,mBAAmB;IAoDrB,aAAa,CACjB,GAAG,EAAE,OAAO,CAAC,OAAO,EACpB,GAAG,EAAE,OAAO,CAAC,QAAQ,EACrB,eAAe,CAAC,EAAE,eAAe,GAChC,OAAO,CAAC,IAAI,CAAC;YAmOF,eAAe;IA8C7B,OAAO,CAAC,SAAS;IAYjB,OAAO,CAAC,gBAAgB;IASlB,KAAK,IAAI,OAAO,CAAC,IAAI,CAAC;IAgnBtB,QAAQ,IAAI,OAAO,CAAC,IAAI,CAAC;IAkD/B,cAAc,IAAI;QAChB,MAAM,EAAE,OAAO,CAAC;QAChB,SAAS,CAAC,EAAE,MAAM,CAAC;QACnB,GAAG,CAAC,EAAE,MAAM,CAAC;QACb,QAAQ,CAAC,EAAE;YACT,KAAK,EAAE,MAAM,CAAC;YACd,MAAM,EAAE,MAAM,CAAC;YACf,OAAO,EAAE,MAAM,CAAC;YAChB,GAAG,EAAE,MAAM,CAAC;YACZ,UAAU,EAAE,MAAM,EAAE,CAAC;SACtB,CAAC;KACH;IAmDM,kBAAkB,IAAI,YAAY,EAAE;IAoEpC,mBAAmB,CAAC,QAAQ,EAAE,YAAY,EAAE,GAAG,MAAM;CAsG7D"}
--- a/dist/http-server-single-session.js
+++ b/dist/http-server-single-session.js
@@ -24,7 +24,7 @@ const protocol_version_1 = require("./utils/protocol-version");
 const instance_context_1 = require("./types/instance-context");
 dotenv_1.default.config();
 const DEFAULT_PROTOCOL_VERSION = protocol_version_1.STANDARD_PROTOCOL_VERSION;
-const MAX_SESSIONS = 100;
+const MAX_SESSIONS = Math.max(1, parseInt(process.env.N8N_MCP_MAX_SESSIONS || '100', 10));
 const SESSION_CLEANUP_INTERVAL = 5 * 60 * 1000;
 function extractMultiTenantHeaders(req) {
    return {
@@ -101,10 +101,19 @@ class SingleSessionHTTPServer {
    async removeSession(sessionId, reason) {
        try {
            const transport = this.transports[sessionId];
+            const server = this.servers[sessionId];
            delete this.transports[sessionId];
            delete this.servers[sessionId];
            delete this.sessionMetadata[sessionId];
            delete this.sessionContexts[sessionId];
+            if (server && typeof server.close === 'function') {
+                try {
+                    await server.close();
+                }
+                catch (serverError) {
+                    logger_1.logger.warn('Error closing server', { sessionId, error: serverError });
+                }
+            }
            if (transport) {
                await transport.close();
            }
--- a/dist/http-server-single-session.js.map
+++ b/dist/http-server-single-session.js.map
--- a/dist/mcp/handlers-n8n-manager.d.ts.map
+++ b/dist/mcp/handlers-n8n-manager.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"handlers-n8n-manager.d.ts","sourceRoot":"","sources":["../../src/mcp/handlers-n8n-manager.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,YAAY,EAAE,MAAM,4BAA4B,CAAC;AAE1D,OAAO,EAML,eAAe,EAGhB,MAAM,kBAAkB,CAAC;AAkB1B,OAAO,EAAE,cAAc,EAAE,MAAM,6BAA6B,CAAC;AAC7D,OAAO,EAAE,eAAe,EAA2B,MAAM,2BAA2B,CAAC;AAOrF,OAAO,EAAE,eAAe,EAAE,MAAM,+BAA+B,CAAC;AAqNhE,wBAAgB,0BAA0B,IAAI,MAAM,CAEnD;AAMD,wBAAgB,uBAAuB,gDAEtC;AAKD,wBAAgB,kBAAkB,IAAI,IAAI,CAIzC;AAED,wBAAgB,eAAe,CAAC,OAAO,CAAC,EAAE,eAAe,GAAG,YAAY,GAAG,IAAI,CAgF9E;AAqHD,wBAAsB,oBAAoB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CA8E7G;AAED,wBAAsB,iBAAiB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAiC1G;AAED,wBAAsB,wBAAwB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAoDjH;AAED,wBAAsB,0BAA0B,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAmDnH;AAED,wBAAsB,wBAAwB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAyCjH;AAED,wBAAsB,oBAAoB,CACxC,IAAI,EAAE,OAAO,EACb,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CAyH1B;AAeD,wBAAsB,oBAAoB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAkC7G;AAED,wBAAsB,mBAAmB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAiE5G;AAED,wBAAsB,sBAAsB,CAC1C,IAAI,EAAE,OAAO,EACb,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CA0F1B;AAED,wBAAsB,qBAAqB,CACzC,IAAI,EAAE,OAAO,EACb,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CAoK1B;AAQD,wBAAsB,kBAAkB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAwJ3G;AAED,wBAAsB,kBAAkB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CA4F3G;AAED,wBAAsB,oBAAoB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAgD7G;AAED,wBAAsB,qBAAqB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAiC9G;AAID,wBAAsB,iBAAiB,CAAC,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAwG3F;AAkLD,wBAAsB,gBAAgB,CAAC,OAAO,EAAE,GAAG,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAkQxG;AAED,wBAAsB,sBAAsB,CAC1C,IAAI,EAAE,OAAO,EACb,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CAsL1B;AA+BD,wBAAsB,oBAAoB,CACxC,IAAI,EAAE,OAAO,EACb,eAAe,EAAE,eAAe,EAChC,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CAoM1B;AAQD,wBAAsB,4BAA4B,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAyErH"}
+{"version":3,"file":"handlers-n8n-manager.d.ts","sourceRoot":"","sources":["../../src/mcp/handlers-n8n-manager.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,YAAY,EAAE,MAAM,4BAA4B,CAAC;AAE1D,OAAO,EAML,eAAe,EAGhB,MAAM,kBAAkB,CAAC;AAkB1B,OAAO,EAAE,cAAc,EAAE,MAAM,6BAA6B,CAAC;AAC7D,OAAO,EAAE,eAAe,EAA2B,MAAM,2BAA2B,CAAC;AAOrF,OAAO,EAAE,eAAe,EAAE,MAAM,+BAA+B,CAAC;AAqNhE,wBAAgB,0BAA0B,IAAI,MAAM,CAEnD;AAMD,wBAAgB,uBAAuB,gDAEtC;AAKD,wBAAgB,kBAAkB,IAAI,IAAI,CAIzC;AAED,wBAAgB,eAAe,CAAC,OAAO,CAAC,EAAE,eAAe,GAAG,YAAY,GAAG,IAAI,CAgF9E;AAqHD,wBAAsB,oBAAoB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAmF7G;AAED,wBAAsB,iBAAiB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAiC1G;AAED,wBAAsB,wBAAwB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAoDjH;AAED,wBAAsB,0BAA0B,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAmDnH;AAED,wBAAsB,wBAAwB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAyCjH;AAED,wBAAsB,oBAAoB,CACxC,IAAI,EAAE,OAAO,EACb,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CA8H1B;AAeD,wBAAsB,oBAAoB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAsC7G;AAED,wBAAsB,mBAAmB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAiE5G;AAED,wBAAsB,sBAAsB,CAC1C,IAAI,EAAE,OAAO,EACb,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CA0F1B;AAED,wBAAsB,qBAAqB,CACzC,IAAI,EAAE,OAAO,EACb,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CAoK1B;AAQD,wBAAsB,kBAAkB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAwJ3G;AAED,wBAAsB,kBAAkB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CA8H3G;AAED,wBAAsB,oBAAoB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAgD7G;AAED,wBAAsB,qBAAqB,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAiC9G;AAID,wBAAsB,iBAAiB,CAAC,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAwG3F;AAkLD,wBAAsB,gBAAgB,CAAC,OAAO,EAAE,GAAG,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAkQxG;AAED,wBAAsB,sBAAsB,CAC1C,IAAI,EAAE,OAAO,EACb,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CAsL1B;AA+BD,wBAAsB,oBAAoB,CACxC,IAAI,EAAE,OAAO,EACb,eAAe,EAAE,eAAe,EAChC,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CAoM1B;AAQD,wBAAsB,4BAA4B,CAAC,IAAI,EAAE,OAAO,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,OAAO,CAAC,eAAe,CAAC,CAyErH"}
--- a/dist/mcp/handlers-n8n-manager.js
+++ b/dist/mcp/handlers-n8n-manager.js
@@ -285,8 +285,13 @@ async function handleCreateWorkflow(args, context) {
        telemetry_1.telemetry.trackWorkflowCreation(workflow, true);
        return {
            success: true,
-            data: workflow,
-            message: `Workflow "${workflow.name}" created successfully with ID: ${workflow.id}`
+            data: {
+                id: workflow.id,
+                name: workflow.name,
+                active: workflow.active,
+                nodeCount: workflow.nodes?.length || 0
+            },
+            message: `Workflow "${workflow.name}" created successfully with ID: ${workflow.id}. Use n8n_get_workflow with mode 'structure' to verify current state.`
        };
    }
    catch (error) {
@@ -537,8 +542,13 @@ async function handleUpdateWorkflow(args, repository, context) {
        }
        return {
            success: true,
-            data: workflow,
-            message: `Workflow "${workflow.name}" updated successfully`
+            data: {
+                id: workflow.id,
+                name: workflow.name,
+                active: workflow.active,
+                nodeCount: workflow.nodes?.length || 0
+            },
+            message: `Workflow "${workflow.name}" updated successfully. Use n8n_get_workflow with mode 'structure' to verify current state.`
        };
    }
    catch (error) {
@@ -594,8 +604,12 @@ async function handleDeleteWorkflow(args, context) {
        const deleted = await client.deleteWorkflow(id);
        return {
            success: true,
-            data: deleted,
-            message: `Workflow ${id} deleted successfully`
+            data: {
+                id: deleted?.id || id,
+                name: deleted?.name,
+                deleted: true
+            },
+            message: `Workflow "${deleted?.name || id}" deleted successfully.`
        };
    }
    catch (error) {
@@ -682,7 +696,7 @@ async function handleValidateWorkflow(args, repository, context) {
    try {
        const client = ensureApiConfigured(context);
        const input = validateWorkflowSchema.parse(args);
-        const workflowResponse = await handleGetWorkflow({ id: input.id });
+        const workflowResponse = await handleGetWorkflow({ id: input.id }, context);
        if (!workflowResponse.success) {
            return workflowResponse;
        }
@@ -1010,14 +1024,18 @@ async function handleGetExecution(args, context) {
        const client = ensureApiConfigured(context);
        const schema = zod_1.z.object({
            id: zod_1.z.string(),
-            mode: zod_1.z.enum(['preview', 'summary', 'filtered', 'full']).optional(),
+            mode: zod_1.z.enum(['preview', 'summary', 'filtered', 'full', 'error']).optional(),
            nodeNames: zod_1.z.array(zod_1.z.string()).optional(),
            itemsLimit: zod_1.z.number().optional(),
            includeInputData: zod_1.z.boolean().optional(),
-            includeData: zod_1.z.boolean().optional()
+            includeData: zod_1.z.boolean().optional(),
+            errorItemsLimit: zod_1.z.number().min(0).max(100).optional(),
+            includeStackTrace: zod_1.z.boolean().optional(),
+            includeExecutionPath: zod_1.z.boolean().optional(),
+            fetchWorkflow: zod_1.z.boolean().optional()
        });
        const params = schema.parse(args);
-        const { id, mode, nodeNames, itemsLimit, includeInputData, includeData } = params;
+        const { id, mode, nodeNames, itemsLimit, includeInputData, includeData, errorItemsLimit, includeStackTrace, includeExecutionPath, fetchWorkflow } = params;
        let effectiveMode = mode;
        if (!effectiveMode && includeData !== undefined) {
            effectiveMode = includeData ? 'summary' : undefined;
@@ -1030,13 +1048,28 @@ async function handleGetExecution(args, context) {
                data: execution
            };
        }
+        let workflow;
+        if (effectiveMode === 'error' && fetchWorkflow !== false && execution.workflowId) {
+            try {
+                workflow = await client.getWorkflow(execution.workflowId);
+            }
+            catch (e) {
+                logger_1.logger.debug('Could not fetch workflow for error analysis', {
+                    workflowId: execution.workflowId,
+                    error: e instanceof Error ? e.message : 'Unknown error'
+                });
+            }
+        }
        const filterOptions = {
            mode: effectiveMode,
            nodeNames,
            itemsLimit,
-            includeInputData
+            includeInputData,
+            errorItemsLimit,
+            includeStackTrace,
+            includeExecutionPath
        };
-        const processedExecution = (0, execution_processor_1.processExecution)(execution, filterOptions);
+        const processedExecution = (0, execution_processor_1.processExecution)(execution, filterOptions, workflow);
        return {
            success: true,
            data: processedExecution
--- a/dist/mcp/handlers-n8n-manager.js.map
+++ b/dist/mcp/handlers-n8n-manager.js.map
--- a/dist/mcp/handlers-workflow-diff.d.ts.map
+++ b/dist/mcp/handlers-workflow-diff.d.ts.map
@@ -1 +1 @@
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+{"version":3,"file":"handlers-workflow-diff.d.ts","sourceRoot":"","sources":["../../src/mcp/handlers-workflow-diff.ts"],"names":[],"mappings":"AAMA,OAAO,EAAE,eAAe,EAAE,MAAM,kBAAkB,CAAC;AAMnD,OAAO,EAAE,eAAe,EAAE,MAAM,2BAA2B,CAAC;AAE5D,OAAO,EAAE,cAAc,EAAE,MAAM,6BAA6B,CAAC;AA0D7D,wBAAsB,2BAA2B,CAC/C,IAAI,EAAE,OAAO,EACb,UAAU,EAAE,cAAc,EAC1B,OAAO,CAAC,EAAE,eAAe,GACxB,OAAO,CAAC,eAAe,CAAC,CA6V1B"}
--- a/dist/mcp/handlers-workflow-diff.js
+++ b/dist/mcp/handlers-workflow-diff.js
@@ -329,13 +329,15 @@ async function handleUpdatePartialWorkflow(args, repository, context) {
            }
            return {
                success: true,
-                data: finalWorkflow,
-                message: `Workflow "${finalWorkflow.name}" updated successfully. Applied ${diffResult.operationsApplied} operations.${activationMessage}`,
-                details: {
-                    operationsApplied: diffResult.operationsApplied,
-                    workflowId: finalWorkflow.id,
-                    workflowName: finalWorkflow.name,
+                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,
--- a/dist/mcp/handlers-workflow-diff.js.map
+++ b/dist/mcp/handlers-workflow-diff.js.map
--- a/dist/mcp/server.d.ts
+++ b/dist/mcp/server.d.ts
@@ -14,6 +14,7 @@ export declare class N8NDocumentationMCPServer {
    private earlyLogger;
    private disabledToolsCache;
    constructor(instanceContext?: InstanceContext, earlyLogger?: EarlyErrorLogger);
+    close(): Promise<void>;
    private initializeDatabase;
    private initializeInMemorySchema;
    private parseSQLStatements;
@@ -59,6 +60,7 @@ export declare class N8NDocumentationMCPServer {
    private getNodeAsToolInfo;
    private getOutputDescriptions;
    private getCommonAIToolUseCases;
+    private buildToolVariantGuidance;
    private getAIToolExamples;
    private validateNodeMinimal;
    private getToolsDocumentation;
--- a/dist/mcp/server.d.ts.map
+++ b/dist/mcp/server.d.ts.map
@@ -1 +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;AAkFnE,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;YAuF/D,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;YA0EX,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;YA2JjB,OAAO;YAgDP,cAAc;YAgFd,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;YA+DlB,uBAAuB;YAsDvB,iBAAiB;IAqE/B,OAAO,CAAC,qBAAqB;IA8C7B,OAAO,CAAC,uBAAuB;IAwD/B,OAAO,CAAC,iBAAiB;YAoDX,mBAAmB;YAkGnB,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"}
+{"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"}
--- a/dist/mcp/server.js
+++ b/dist/mcp/server.js
@@ -51,6 +51,7 @@ const node_repository_1 = require("../database/node-repository");
 const database_adapter_1 = require("../database/database-adapter");
 const property_filter_1 = require("../services/property-filter");
 const task_templates_1 = require("../services/task-templates");
+const config_validator_1 = require("../services/config-validator");
 const enhanced_config_validator_1 = require("../services/enhanced-config-validator");
 const property_dependencies_1 = require("../services/property-dependencies");
 const type_structure_service_1 = require("../services/type-structure-service");
@@ -147,6 +148,29 @@ class N8NDocumentationMCPServer {
        });
        this.setupHandlers();
    }
+    async close() {
+        try {
+            await this.server.close();
+            this.cache.destroy();
+            if (this.db) {
+                try {
+                    this.db.close();
+                }
+                catch (dbError) {
+                    logger_1.logger.warn('Error closing database', {
+                        error: dbError instanceof Error ? dbError.message : String(dbError)
+                    });
+                }
+            }
+            this.db = null;
+            this.repository = null;
+            this.templateService = null;
+            this.earlyLogger = null;
+        }
+        catch (error) {
+            logger_1.logger.warn('Error closing MCP server', { error: error instanceof Error ? error.message : String(error) });
+        }
+    }
    async initializeDatabase(dbPath) {
        try {
            if (this.earlyLogger) {
@@ -1002,12 +1026,17 @@ class N8NDocumentationMCPServer {
                };
            });
        }
-        return {
+        const result = {
            ...node,
            workflowNodeType: (0, node_utils_1.getWorkflowNodeType)(node.package ?? 'n8n-nodes-base', node.nodeType),
            aiToolCapabilities,
            outputs
        };
+        const toolVariantInfo = this.buildToolVariantGuidance(node);
+        if (toolVariantInfo) {
+            result.toolVariantInfo = toolVariantInfo;
+        }
+        return result;
    }
    async searchNodes(query, limit = 20, options) {
        await this.ensureInitialized();
@@ -1680,6 +1709,10 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
                developmentStyle: node.developmentStyle ?? 'programmatic'
            }
        };
+        const toolVariantInfo = this.buildToolVariantGuidance(node);
+        if (toolVariantInfo) {
+            result.toolVariantInfo = toolVariantInfo;
+        }
        if (includeExamples) {
            try {
                const examples = this.db.prepare(`
@@ -1761,7 +1794,7 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
                if (!node) {
                    throw new Error(`Node ${nodeType} not found`);
                }
-                return {
+                const result = {
                    nodeType: node.nodeType,
                    workflowNodeType: (0, node_utils_1.getWorkflowNodeType)(node.package ?? 'n8n-nodes-base', node.nodeType),
                    displayName: node.displayName,
@@ -1772,6 +1805,11 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
                    isTrigger: node.isTrigger,
                    isWebhook: node.isWebhook
                };
+                const toolVariantInfo = this.buildToolVariantGuidance(node);
+                if (toolVariantInfo) {
+                    result.toolVariantInfo = toolVariantInfo;
+                }
+                return result;
            }
            case 'standard': {
                const essentials = await this.getNodeEssentials(nodeType, includeExamples);
@@ -2071,7 +2109,11 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
            throw new Error(`Node ${nodeType} not found`);
        }
        const properties = node.properties || [];
-        const validationResult = enhanced_config_validator_1.EnhancedConfigValidator.validateWithMode(node.nodeType, config, properties, mode, profile);
+        const configWithVersion = {
+            '@version': node.version || 1,
+            ...config
+        };
+        const validationResult = enhanced_config_validator_1.EnhancedConfigValidator.validateWithMode(node.nodeType, configWithVersion, properties, mode, profile);
        return {
            nodeType: node.nodeType,
            workflowNodeType: (0, node_utils_1.getWorkflowNodeType)(node.package, node.nodeType),
@@ -2269,6 +2311,32 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
            'Extend AI agent capabilities'
        ];
    }
+    buildToolVariantGuidance(node) {
+        const isToolVariant = !!node.isToolVariant;
+        const hasToolVariant = !!node.hasToolVariant;
+        const toolVariantOf = node.toolVariantOf;
+        if (!isToolVariant && !hasToolVariant) {
+            return undefined;
+        }
+        if (isToolVariant) {
+            return {
+                isToolVariant: true,
+                toolVariantOf,
+                hasToolVariant: false,
+                guidance: `This is the Tool variant for AI Agent integration. Use this node type when connecting to AI Agents. The base node is: ${toolVariantOf}`
+            };
+        }
+        if (hasToolVariant && node.nodeType) {
+            const toolVariantNodeType = `${node.nodeType}Tool`;
+            return {
+                isToolVariant: false,
+                hasToolVariant: true,
+                toolVariantNodeType,
+                guidance: `To use this node with AI Agents, use the Tool variant: ${toolVariantNodeType}. The Tool variant has an additional 'toolDescription' property and outputs 'ai_tool' instead of 'main'.`
+            };
+        }
+        return undefined;
+    }
    getAIToolExamples(nodeType) {
        const exampleMap = {
            'nodes-base.slack': {
@@ -2339,40 +2407,16 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
            throw new Error(`Node ${nodeType} not found`);
        }
        const properties = node.properties || [];
-        const operationContext = {
-            resource: config?.resource,
-            operation: config?.operation,
-            action: config?.action,
-            mode: config?.mode
+        const configWithVersion = {
+            '@version': node.version || 1,
+            ...(config || {})
        };
        const missingFields = [];
        for (const prop of properties) {
            if (!prop.required)
                continue;
-            if (prop.displayOptions) {
-                let isVisible = true;
-                if (prop.displayOptions.show) {
-                    for (const [key, values] of Object.entries(prop.displayOptions.show)) {
-                        const configValue = config?.[key];
-                        const expectedValues = Array.isArray(values) ? values : [values];
-                        if (!expectedValues.includes(configValue)) {
-                            isVisible = false;
-                            break;
-                        }
-                    }
-                }
-                if (isVisible && prop.displayOptions.hide) {
-                    for (const [key, values] of Object.entries(prop.displayOptions.hide)) {
-                        const configValue = config?.[key];
-                        const expectedValues = Array.isArray(values) ? values : [values];
-                        if (expectedValues.includes(configValue)) {
-                            isVisible = false;
-                            break;
-                        }
-                    }
-                }
-                if (!isVisible)
-                    continue;
+            if (prop.displayOptions && !config_validator_1.ConfigValidator.isPropertyVisible(prop, configWithVersion)) {
+                continue;
            }
            if (!config || !(prop.name in config)) {
                missingFields.push(prop.displayName || prop.name);
--- a/dist/mcp/server.js.map
+++ b/dist/mcp/server.js.map
--- a/dist/mcp/tool-docs/templates/get-template.js
+++ b/dist/mcp/tool-docs/templates/get-template.js
@@ -43,7 +43,7 @@ exports.getTemplateDoc = {
  - url: Link to template on n8n.io
  - workflow: Complete workflow JSON with structure:
    - nodes: Array of node objects (id, name, type, typeVersion, position, parameters)
-    - connections: Object mapping source nodes to targets
+    - connections: Object mapping source node names to targets
    - settings: Workflow configuration (timezone, error handling, etc.)
 - usage: Instructions for using the workflow`,
        examples: [
--- a/dist/mcp/tool-docs/workflow_management/n8n-create-workflow.js
+++ b/dist/mcp/tool-docs/workflow_management/n8n-create-workflow.js
@@ -21,10 +21,10 @@ exports.n8nCreateWorkflowDoc = {
        parameters: {
            name: { type: 'string', required: true, description: 'Workflow name' },
            nodes: { type: 'array', required: true, description: 'Array of nodes with id, name, type, typeVersion, position, parameters' },
-            connections: { type: 'object', required: true, description: 'Node connections. Keys are source node IDs' },
+            connections: { type: 'object', required: true, description: 'Node connections. Keys are source node names (not IDs)' },
            settings: { type: 'object', description: 'Optional workflow settings (timezone, error handling, etc.)' }
        },
-        returns: 'Created workflow object with id, name, nodes, connections, active status',
+        returns: 'Minimal summary (id, name, active, nodeCount) for token efficiency. Use n8n_get_workflow with mode "structure" to verify current state if needed.',
        examples: [
            `// Basic webhook to Slack workflow
 n8n_create_workflow({
@@ -56,8 +56,8 @@ n8n_create_workflow({
    }
  ],
  connections: {
-    "webhook_1": {
-      "main": [[{node: "slack_1", type: "main", index: 0}]]
+    "Webhook": {
+      "main": [[{node: "Slack", type: "main", index: 0}]]
    }
  }
 })`,
--- a/dist/mcp/tool-docs/workflow_management/n8n-create-workflow.js.map
+++ b/dist/mcp/tool-docs/workflow_management/n8n-create-workflow.js.map
@@ -1 +1 @@
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--- a/dist/mcp/tool-docs/workflow_management/n8n-delete-workflow.js
+++ b/dist/mcp/tool-docs/workflow_management/n8n-delete-workflow.js
@@ -20,7 +20,7 @@ exports.n8nDeleteWorkflowDoc = {
        parameters: {
            id: { type: 'string', required: true, description: 'Workflow ID to delete permanently' }
        },
-        returns: 'Success confirmation or error if workflow not found/cannot be deleted',
+        returns: 'Minimal confirmation (id, name, deleted: true) for token efficiency.',
        examples: [
            'n8n_delete_workflow({id: "abc123"}) - Delete specific workflow',
            'if (confirm) { n8n_delete_workflow({id: wf.id}); } // With confirmation'
--- a/dist/mcp/tool-docs/workflow_management/n8n-delete-workflow.js.map
+++ b/dist/mcp/tool-docs/workflow_management/n8n-delete-workflow.js.map
@@ -1 +1 @@
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+{"version":3,"file":"n8n-delete-workflow.js","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/workflow_management/n8n-delete-workflow.ts"],"names":[],"mappings":";;;AAEa,QAAA,oBAAoB,GAAsB;IACrD,IAAI,EAAE,qBAAqB;IAC3B,QAAQ,EAAE,qBAAqB;IAC/B,UAAU,EAAE;QACV,WAAW,EAAE,8DAA8D;QAC3E,aAAa,EAAE,CAAC,IAAI,CAAC;QACrB,OAAO,EAAE,2CAA2C;QACpD,WAAW,EAAE,iBAAiB;QAC9B,IAAI,EAAE;YACJ,wBAAwB;YACxB,+BAA+B;YAC/B,+DAA+D;SAChE;KACF;IACD,IAAI,EAAE;QACJ,WAAW,EAAE,qPAAqP;QAClQ,UAAU,EAAE;YACV,EAAE,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,IAAI,EAAE,WAAW,EAAE,mCAAmC,EAAE;SACzF;QACD,OAAO,EAAE,sEAAsE;QAC/E,QAAQ,EAAE;YACR,gEAAgE;YAChE,yEAAyE;SAC1E;QACD,QAAQ,EAAE;YACR,2BAA2B;YAC3B,yBAAyB;YACzB,2BAA2B;YAC3B,wBAAwB;YACxB,mBAAmB;SACpB;QACD,WAAW,EAAE,mGAAmG;QAChH,aAAa,EAAE;YACb,gCAAgC;YAChC,+DAA+D;YAC/D,2CAA2C;YAC3C,4CAA4C;SAC7C;QACD,QAAQ,EAAE;YACR,iDAAiD;YACjD,uCAAuC;YACvC,+BAA+B;YAC/B,iCAAiC;YACjC,0BAA0B;SAC3B;QACD,YAAY,EAAE,CAAC,kBAAkB,EAAE,oBAAoB,EAAE,6BAA6B,EAAE,gBAAgB,CAAC;KAC1G;CACF,CAAC"}
--- a/dist/mcp/tool-docs/workflow_management/n8n-executions.d.ts.map
+++ b/dist/mcp/tool-docs/workflow_management/n8n-executions.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"n8n-executions.d.ts","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/workflow_management/n8n-executions.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,iBAAiB,EAAE,MAAM,UAAU,CAAC;AAE7C,eAAO,MAAM,gBAAgB,EAAE,iBA+E9B,CAAC"}
+{"version":3,"file":"n8n-executions.d.ts","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/workflow_management/n8n-executions.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,iBAAiB,EAAE,MAAM,UAAU,CAAC;AAE7C,eAAO,MAAM,gBAAgB,EAAE,iBAwG9B,CAAC"}
--- a/dist/mcp/tool-docs/workflow_management/n8n-executions.js
+++ b/dist/mcp/tool-docs/workflow_management/n8n-executions.js
@@ -6,13 +6,14 @@ exports.n8nExecutionsDoc = {
    category: 'workflow_management',
    essentials: {
        description: 'Manage workflow executions: get details, list, or delete. Unified tool for all execution operations.',
-        keyParameters: ['action', 'id', 'workflowId', 'status'],
-        example: 'n8n_executions({action: "list", workflowId: "abc123", status: "error"})',
+        keyParameters: ['action', 'id', 'workflowId', 'status', 'mode'],
+        example: 'n8n_executions({action: "get", id: "exec_456", mode: "error"})',
        performance: 'Fast (50-200ms)',
        tips: [
            'action="get": Get execution details by ID',
            'action="list": List executions with filters',
            'action="delete": Delete execution record',
+            'Use mode="error" for efficient failure debugging (80-90% token savings)',
            'Use mode parameter for action=get to control detail level'
        ]
    },
@@ -26,14 +27,26 @@ exports.n8nExecutionsDoc = {
 - preview: Structure only, no data
 - summary: 2 items per node (default)
 - filtered: Custom items limit, optionally filter by node names
- full: All execution data (can be very large)`,
+- full: All execution data (can be very large)
+- error: Optimized for debugging failures - extracts error info, upstream context, and AI suggestions
+
+**Error Mode Features:**
+- Extracts error message, type, and node configuration
+- Samples input data from upstream node (configurable limit)
+- Shows execution path leading to error
+- Provides AI-friendly fix suggestions based on error patterns
+- Token-efficient (80-90% smaller than full mode)`,
        parameters: {
            action: { type: 'string', required: true, description: 'Operation: "get", "list", or "delete"' },
            id: { type: 'string', required: false, description: 'Execution ID (required for action=get or action=delete)' },
-            mode: { type: 'string', required: false, description: 'For action=get: "preview", "summary" (default), "filtered", "full"' },
+            mode: { type: 'string', required: false, description: 'For action=get: "preview", "summary" (default), "filtered", "full", "error"' },
            nodeNames: { type: 'array', required: false, description: 'For action=get with mode=filtered: Filter to specific nodes by name' },
            itemsLimit: { type: 'number', required: false, description: 'For action=get with mode=filtered: Items per node (0=structure, 2=default, -1=unlimited)' },
            includeInputData: { type: 'boolean', required: false, description: 'For action=get: Include input data in addition to output (default: false)' },
+            errorItemsLimit: { type: 'number', required: false, description: 'For action=get with mode=error: Sample items from upstream (default: 2, max: 100)' },
+            includeStackTrace: { type: 'boolean', required: false, description: 'For action=get with mode=error: Include full stack trace (default: false, shows truncated)' },
+            includeExecutionPath: { type: 'boolean', required: false, description: 'For action=get with mode=error: Include execution path (default: true)' },
+            fetchWorkflow: { type: 'boolean', required: false, description: 'For action=get with mode=error: Fetch workflow for accurate upstream detection (default: true)' },
            workflowId: { type: 'string', required: false, description: 'For action=list: Filter by workflow ID' },
            status: { type: 'string', required: false, description: 'For action=list: Filter by status ("success", "error", "waiting")' },
            limit: { type: 'number', required: false, description: 'For action=list: Number of results (1-100, default: 100)' },
@@ -42,10 +55,15 @@ exports.n8nExecutionsDoc = {
            includeData: { type: 'boolean', required: false, description: 'For action=list: Include execution data (default: false)' }
        },
        returns: `Depends on action:
- get: Execution object with data based on mode
+- get (error mode): { errorInfo: { primaryError, upstreamContext, executionPath, suggestions }, summary }
+- get (other modes): Execution object with data based on mode
 - list: { data: [...executions], nextCursor?: string }
 - delete: { success: boolean, message: string }`,
        examples: [
+            '// Debug a failed execution (recommended for errors)\nn8n_executions({action: "get", id: "exec_456", mode: "error"})',
+            '// Debug with more sample data from upstream\nn8n_executions({action: "get", id: "exec_456", mode: "error", errorItemsLimit: 5})',
+            '// Debug with full stack trace\nn8n_executions({action: "get", id: "exec_456", mode: "error", includeStackTrace: true})',
+            '// Debug without workflow fetch (faster but less accurate)\nn8n_executions({action: "get", id: "exec_456", mode: "error", fetchWorkflow: false})',
            '// List recent executions for a workflow\nn8n_executions({action: "list", workflowId: "abc123", limit: 10})',
            '// List failed executions\nn8n_executions({action: "list", status: "error"})',
            '// Get execution summary\nn8n_executions({action: "get", id: "exec_456"})',
@@ -54,7 +72,10 @@ exports.n8nExecutionsDoc = {
            '// Delete an execution\nn8n_executions({action: "delete", id: "exec_456"})'
        ],
        useCases: [
-            'Debug workflow failures (get with mode=full)',
+            'Debug workflow failures efficiently (mode=error) - 80-90% token savings',
+            'Get AI suggestions for fixing common errors',
+            'Analyze input data that caused failure',
+            'Debug workflow failures with full data (mode=full)',
            'Monitor workflow health (list with status filter)',
            'Audit execution history',
            'Clean up old execution records',
@@ -63,18 +84,22 @@ exports.n8nExecutionsDoc = {
        performance: `Response times:
 - list: 50-150ms depending on filters
 - get (preview/summary): 30-100ms
+- get (error): 50-200ms (includes optional workflow fetch)
 - get (full): 100-500ms+ depending on data size
 - delete: 30-80ms`,
        bestPractices: [
-            'Use mode="summary" (default) for debugging - shows enough data',
+            'Use mode="error" for debugging failed executions - 80-90% token savings vs full',
+            'Use mode="summary" (default) for quick inspection',
            'Use mode="filtered" with nodeNames for large workflows',
            'Filter by workflowId when listing to reduce results',
            'Use cursor for pagination through large result sets',
+            'Set fetchWorkflow=false if you already know the workflow structure',
            'Delete old executions to save storage'
        ],
        pitfalls: [
            'Requires N8N_API_URL and N8N_API_KEY configured',
            'mode="full" can return very large responses for complex workflows',
+            'mode="error" fetches workflow by default (adds ~50-100ms), disable with fetchWorkflow=false',
            'Execution must exist or returns 404',
            'Delete is permanent - cannot undo'
        ],
--- a/dist/mcp/tool-docs/workflow_management/n8n-executions.js.map
+++ b/dist/mcp/tool-docs/workflow_management/n8n-executions.js.map
@@ -1 +1 @@
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+{"version":3,"file":"n8n-executions.js","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/workflow_management/n8n-executions.ts"],"names":[],"mappings":";;;AAEa,QAAA,gBAAgB,GAAsB;IACjD,IAAI,EAAE,gBAAgB;IACtB,QAAQ,EAAE,qBAAqB;IAC/B,UAAU,EAAE;QACV,WAAW,EAAE,sGAAsG;QACnH,aAAa,EAAE,CAAC,QAAQ,EAAE,IAAI,EAAE,YAAY,EAAE,QAAQ,EAAE,MAAM,CAAC;QAC/D,OAAO,EAAE,gEAAgE;QACzE,WAAW,EAAE,iBAAiB;QAC9B,IAAI,EAAE;YACJ,2CAA2C;YAC3C,6CAA6C;YAC7C,0CAA0C;YAC1C,yEAAyE;YACzE,2DAA2D;SAC5D;KACF;IACD,IAAI,EAAE;QACJ,WAAW,EAAE;;;;;;;;;;;;;;;;;kDAiBiC;QAC9C,UAAU,EAAE;YACV,MAAM,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,IAAI,EAAE,WAAW,EAAE,uCAAuC,EAAE;YAChG,EAAE,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,yDAAyD,EAAE;YAC/G,IAAI,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,6EAA6E,EAAE;YACrI,SAAS,EAAE,EAAE,IAAI,EAAE,OAAO,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,qEAAqE,EAAE;YACjI,UAAU,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,0FAA0F,EAAE;YACxJ,gBAAgB,EAAE,EAAE,IAAI,EAAE,SAAS,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,2EAA2E,EAAE;YAChJ,eAAe,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,mFAAmF,EAAE;YACtJ,iBAAiB,EAAE,EAAE,IAAI,EAAE,SAAS,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,4FAA4F,EAAE;YAClK,oBAAoB,EAAE,EAAE,IAAI,EAAE,SAAS,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,wEAAwE,EAAE;YACjJ,aAAa,EAAE,EAAE,IAAI,EAAE,SAAS,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,gGAAgG,EAAE;YAClK,UAAU,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,wCAAwC,EAAE;YACtG,MAAM,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,mEAAmE,EAAE;YAC7H,KAAK,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,0DAA0D,EAAE;YACnH,MAAM,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,2DAA2D,EAAE;YACrH,SAAS,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,oDAAoD,EAAE;YACjH,WAAW,EAAE,EAAE,IAAI,EAAE,SAAS,EAAE,QAAQ,EAAE,KAAK,EAAE,WAAW,EAAE,0DAA0D,EAAE;SAC3H;QACD,OAAO,EAAE;;;;gDAImC;QAC5C,QAAQ,EAAE;YACR,sHAAsH;YACtH,kIAAkI;YAClI,yHAAyH;YACzH,kJAAkJ;YAClJ,6GAA6G;YAC7G,8EAA8E;YAC9E,2EAA2E;YAC3E,2FAA2F;YAC3F,+IAA+I;YAC/I,4EAA4E;SAC7E;QACD,QAAQ,EAAE;YACR,yEAAyE;YACzE,6CAA6C;YAC7C,wCAAwC;YACxC,oDAAoD;YACpD,mDAAmD;YACnD,yBAAyB;YACzB,gCAAgC;YAChC,+BAA+B;SAChC;QACD,WAAW,EAAE;;;;;kBAKC;QACd,aAAa,EAAE;YACb,iFAAiF;YACjF,mDAAmD;YACnD,wDAAwD;YACxD,qDAAqD;YACrD,qDAAqD;YACrD,oEAAoE;YACpE,uCAAuC;SACxC;QACD,QAAQ,EAAE;YACR,iDAAiD;YACjD,mEAAmE;YACnE,6FAA6F;YAC7F,qCAAqC;YACrC,mCAAmC;SACpC;QACD,YAAY,EAAE,CAAC,kBAAkB,EAAE,mBAAmB,EAAE,uBAAuB,CAAC;KACjF;CACF,CAAC"}
--- a/dist/mcp/tool-docs/workflow_management/n8n-update-full-workflow.js
+++ b/dist/mcp/tool-docs/workflow_management/n8n-update-full-workflow.js
@@ -26,7 +26,7 @@ exports.n8nUpdateFullWorkflowDoc = {
            settings: { type: 'object', description: 'Workflow settings to update (timezone, error handling, etc.)' },
            intent: { type: 'string', description: 'Intent of the change - helps to return better response. Include in every tool call. Example: "Migrate workflow to new node versions".' }
        },
-        returns: 'Updated workflow object with all fields including the changes applied',
+        returns: 'Minimal summary (id, name, active, nodeCount) for token efficiency. Use n8n_get_workflow with mode "structure" to verify current state if needed.',
        examples: [
            'n8n_update_full_workflow({id: "abc", intent: "Rename workflow for clarity", name: "New Name"}) - Rename with intent',
            'n8n_update_full_workflow({id: "abc", name: "New Name"}) - Rename only',
--- a/dist/mcp/tool-docs/workflow_management/n8n-update-full-workflow.js.map
+++ b/dist/mcp/tool-docs/workflow_management/n8n-update-full-workflow.js.map
@@ -1 +1 @@
-{"version":3,"file":"n8n-update-full-workflow.js","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/workflow_management/n8n-update-full-workflow.ts"],"names":[],"mappings":";;;AAEa,QAAA,wBAAwB,GAAsB;IACzD,IAAI,EAAE,0BAA0B;IAChC,QAAQ,EAAE,qBAAqB;IAC/B,UAAU,EAAE;QACV,WAAW,EAAE,qHAAqH;QAClI,aAAa,EAAE,CAAC,IAAI,EAAE,OAAO,EAAE,aAAa,CAAC;QAC7C,OAAO,EAAE,4EAA4E;QACrF,WAAW,EAAE,mBAAmB;QAChC,IAAI,EAAE;YACJ,2EAA2E;YAC3E,gCAAgC;YAChC,sCAAsC;YACtC,0BAA0B;SAC3B;KACF;IACD,IAAI,EAAE;QACJ,WAAW,EAAE,4QAA4Q;QACzR,UAAU,EAAE;YACV,EAAE,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,IAAI,EAAE,WAAW,EAAE,uBAAuB,EAAE;YAC5E,IAAI,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,WAAW,EAAE,8BAA8B,EAAE;YACrE,KAAK,EAAE,EAAE,IAAI,EAAE,OAAO,EAAE,WAAW,EAAE,oEAAoE,EAAE;YAC3G,WAAW,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,WAAW,EAAE,+DAA+D,EAAE;YAC7G,QAAQ,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,WAAW,EAAE,8DAA8D,EAAE;YACzG,MAAM,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,WAAW,EAAE,uIAAuI,EAAE;SACjL;QACD,OAAO,EAAE,uEAAuE;QAChF,QAAQ,EAAE;YACR,qHAAqH;YACrH,uEAAuE;YACvE,qIAAqI;YACrI,+IAA+I;SAChJ;QACD,QAAQ,EAAE;YACR,8BAA8B;YAC9B,mBAAmB;YACnB,0BAA0B;YAC1B,+BAA+B;YAC/B,kBAAkB;SACnB;QACD,WAAW,EAAE,wHAAwH;QACrI,aAAa,EAAE;YACb,qEAAqE;YACrE,yCAAyC;YACzC,iDAAiD;YACjD,sCAAsC;YACtC,sCAAsC;SACvC;QACD,QAAQ,EAAE;YACR,iDAAiD;YACjD,oCAAoC;YACpC,+BAA+B;YAC/B,4BAA4B;YAC5B,iDAAiD;SAClD;QACD,YAAY,EAAE,CAAC,kBAAkB,EAAE,6BAA6B,EAAE,mBAAmB,EAAE,qBAAqB,CAAC;KAC9G;CACF,CAAC"}
+{"version":3,"file":"n8n-update-full-workflow.js","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/workflow_management/n8n-update-full-workflow.ts"],"names":[],"mappings":";;;AAEa,QAAA,wBAAwB,GAAsB;IACzD,IAAI,EAAE,0BAA0B;IAChC,QAAQ,EAAE,qBAAqB;IAC/B,UAAU,EAAE;QACV,WAAW,EAAE,qHAAqH;QAClI,aAAa,EAAE,CAAC,IAAI,EAAE,OAAO,EAAE,aAAa,CAAC;QAC7C,OAAO,EAAE,4EAA4E;QACrF,WAAW,EAAE,mBAAmB;QAChC,IAAI,EAAE;YACJ,2EAA2E;YAC3E,gCAAgC;YAChC,sCAAsC;YACtC,0BAA0B;SAC3B;KACF;IACD,IAAI,EAAE;QACJ,WAAW,EAAE,4QAA4Q;QACzR,UAAU,EAAE;YACV,EAAE,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,IAAI,EAAE,WAAW,EAAE,uBAAuB,EAAE;YAC5E,IAAI,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,WAAW,EAAE,8BAA8B,EAAE;YACrE,KAAK,EAAE,EAAE,IAAI,EAAE,OAAO,EAAE,WAAW,EAAE,oEAAoE,EAAE;YAC3G,WAAW,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,WAAW,EAAE,+DAA+D,EAAE;YAC7G,QAAQ,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,WAAW,EAAE,8DAA8D,EAAE;YACzG,MAAM,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,WAAW,EAAE,uIAAuI,EAAE;SACjL;QACD,OAAO,EAAE,mJAAmJ;QAC5J,QAAQ,EAAE;YACR,qHAAqH;YACrH,uEAAuE;YACvE,qIAAqI;YACrI,+IAA+I;SAChJ;QACD,QAAQ,EAAE;YACR,8BAA8B;YAC9B,mBAAmB;YACnB,0BAA0B;YAC1B,+BAA+B;YAC/B,kBAAkB;SACnB;QACD,WAAW,EAAE,wHAAwH;QACrI,aAAa,EAAE;YACb,qEAAqE;YACrE,yCAAyC;YACzC,iDAAiD;YACjD,sCAAsC;YACtC,sCAAsC;SACvC;QACD,QAAQ,EAAE;YACR,iDAAiD;YACjD,oCAAoC;YACpC,+BAA+B;YAC/B,4BAA4B;YAC5B,iDAAiD;SAClD;QACD,YAAY,EAAE,CAAC,kBAAkB,EAAE,6BAA6B,EAAE,mBAAmB,EAAE,qBAAqB,CAAC;KAC9G;CACF,CAAC"}
--- a/dist/mcp/tool-docs/workflow_management/n8n-update-partial-workflow.js
+++ b/dist/mcp/tool-docs/workflow_management/n8n-update-partial-workflow.js
@@ -313,7 +313,7 @@ n8n_update_partial_workflow({
            continueOnError: { type: 'boolean', description: 'If true, apply valid operations even if some fail (best-effort mode). Returns applied and failed operation indices. Default: false (atomic)' },
            intent: { type: 'string', description: 'Intent of the change - helps to return better response. Include in every tool call. Example: "Add error handling for API failures".' }
        },
-        returns: 'Updated workflow object or validation results if validateOnly=true',
+        returns: 'Minimal summary (id, name, active, nodeCount, operationsApplied) for token efficiency. Use n8n_get_workflow with mode "structure" to verify current state if needed. Returns validation results if validateOnly=true.',
        examples: [
            '// Include intent parameter for better responses\nn8n_update_partial_workflow({id: "abc", intent: "Add error handling for API failures", operations: [{type: "addConnection", source: "HTTP Request", target: "Error Handler"}]})',
            '// Add a basic node (minimal configuration)\nn8n_update_partial_workflow({id: "abc", operations: [{type: "addNode", node: {name: "Process Data", type: "n8n-nodes-base.set", position: [400, 300], parameters: {}}}]})',
--- a/dist/mcp/tool-docs/workflow_management/n8n-update-partial-workflow.js.map
+++ b/dist/mcp/tool-docs/workflow_management/n8n-update-partial-workflow.js.map
@@ -1 +1 @@
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+{"version":3,"file":"n8n-update-partial-workflow.js","sourceRoot":"","sources":["../../../../src/mcp/tool-docs/workflow_management/n8n-update-partial-workflow.ts"],"names":[],"mappings":";;;AAEa,QAAA,2BAA2B,GAAsB;IAC5D,IAAI,EAAE,6BAA6B;IACnC,QAAQ,EAAE,qBAAqB;IAC/B,UAAU,EAAE;QACV,WAAW,EAAE,ggBAAggB;QAC7gB,aAAa,EAAE,CAAC,IAAI,EAAE,YAAY,EAAE,iBAAiB,CAAC;QACtD,OAAO,EAAE,6IAA6I;QACtJ,WAAW,EAAE,iBAAiB;QAC9B,IAAI,EAAE;YACJ,gJAAgJ;YAChJ,oGAAoG;YACpG,mDAAmD;YACnD,wCAAwC;YACxC,6BAA6B;YAC7B,6DAA6D;YAC7D,uDAAuD;YACvD,0DAA0D;YAC1D,kCAAkC;YAClC,iFAAiF;YACjF,mDAAmD;YACnD,gGAAgG;YAChG,sGAAsG;YACtG,yIAAyI;SAC1I;KACF;IACD,IAAI,EAAE;QACJ,WAAW,EAAE;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;iCAkRgB;QAC7B,UAAU,EAAE;YACV,EAAE,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,EAAE,IAAI,EAAE,WAAW,EAAE,uBAAuB,EAAE;YAC5E,UAAU,EAAE;gBACV,IAAI,EAAE,OAAO;gBACb,QAAQ,EAAE,IAAI;gBACd,WAAW,EAAE,iIAAiI;aAC/I;YACD,YAAY,EAAE,EAAE,IAAI,EAAE,SAAS,EAAE,WAAW,EAAE,yDAAyD,EAAE;YACzG,eAAe,EAAE,EAAE,IAAI,EAAE,SAAS,EAAE,WAAW,EAAE,6IAA6I,EAAE;YAChM,MAAM,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,WAAW,EAAE,qIAAqI,EAAE;SAC/K;QACD,OAAO,EAAE,uNAAuN;QAChO,QAAQ,EAAE;YACR,mOAAmO;YACnO,wNAAwN;YACxN,kTAAkT;YAClT,0VAA0V;YAC1V,gMAAgM;YAChM,mLAAmL;YACnL,mLAAmL;YACnL,6UAA6U;YAC7U,oMAAoM;YACpM,oYAAoY;YACpY,qJAAqJ;YACrJ,+MAA+M;YAC/M,kSAAkS;YAClS,0LAA0L;YAC1L,wJAAwJ;YACxJ,uDAAuD;YACvD,2MAA2M;YAC3M,wLAAwL;YACxL,+LAA+L;YAC/L,gNAAgN;YAChN,4hBAA4hB;YAC5hB,+WAA+W;YAC/W,qWAAqW;YACrW,uVAAuV;YACvV,qPAAqP;YACrP,0eAA0e;YAC1e,6DAA6D;YAC7D,oKAAoK;YACpK,oOAAoO;YACpO,qLAAqL;YACrL,mPAAmP;YACnP,qLAAqL;SACtL;QACD,QAAQ,EAAE;YACR,yCAAyC;YACzC,uDAAuD;YACvD,wDAAwD;YACxD,+CAA+C;YAC/C,+BAA+B;YAC/B,iCAAiC;YACjC,8CAA8C;YAC9C,sBAAsB;YACtB,2BAA2B;YAC3B,yBAAyB;YACzB,iEAAiE;YACjE,+CAA+C;YAC/C,2CAA2C;YAC3C,0CAA0C;YAC1C,+CAA+C;YAC/C,kCAAkC;SACnC;QACD,WAAW,EAAE,8FAA8F;QAC3G,aAAa,EAAE;YACb,kPAAkP;YAClP,iEAAiE;YACjE,+DAA+D;YAC/D,oDAAoD;YACpD,yDAAyD;YACzD,iDAAiD;YACjD,gEAAgE;YAChE,qDAAqD;YACrD,mCAAmC;YACnC,wCAAwC;YACxC,gDAAgD;YAChD,8FAA8F;YAC9F,2EAA2E;YAC3E,6DAA6D;YAC7D,oEAAoE;YACpE,8EAA8E;YAC9E,8EAA8E;YAC9E,8GAA8G;YAC9G,kFAAkF;YAClF,kFAAkF;SACnF;QACD,QAAQ,EAAE;YACR,uGAAuG;YACvG,wEAAwE;YACxE,6DAA6D;YAC7D,sFAAsF;YACtF,4DAA4D;YAC5D,yEAAyE;YACzE,yFAAyF;YACzF,wFAAwF;YACxF,mGAAmG;YACnG,iFAAiF;YACjF,iNAAiN;YACjN,kKAAkK;YAClK,4EAA4E;YAC5E,yFAAyF;YACzF,4LAA4L;YAC5L,oIAAoI;YACpI,wJAAwJ;YACxJ,+JAA+J;YAC/J,uEAAuE;YACvE,iKAAiK;YACjK,2FAA2F;YAC3F,gHAAgH;YAChH,kHAAkH;SACnH;QACD,YAAY,EAAE,CAAC,0BAA0B,EAAE,kBAAkB,EAAE,mBAAmB,EAAE,qBAAqB,CAAC;KAC3G;CACF,CAAC"}
--- a/dist/mcp/tools-n8n-manager.d.ts.map
+++ b/dist/mcp/tools-n8n-manager.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"tools-n8n-manager.d.ts","sourceRoot":"","sources":["../../src/mcp/tools-n8n-manager.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,cAAc,EAAE,MAAM,UAAU,CAAC;AAQ1C,eAAO,MAAM,kBAAkB,EAAE,cAAc,EAmf9C,CAAC"}
+{"version":3,"file":"tools-n8n-manager.d.ts","sourceRoot":"","sources":["../../src/mcp/tools-n8n-manager.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,cAAc,EAAE,MAAM,UAAU,CAAC;AAQ1C,eAAO,MAAM,kBAAkB,EAAE,cAAc,EAqlB9C,CAAC"}
--- a/dist/mcp/tools-n8n-manager.js
+++ b/dist/mcp/tools-n8n-manager.js
@@ -42,7 +42,7 @@ exports.n8nManagementTools = [
                },
                connections: {
                    type: 'object',
-                    description: 'Workflow connections object. Keys are source node IDs, values define output connections'
+                    description: 'Workflow connections object. Keys are source node names (the name field, not id), values define output connections'
                },
                settings: {
                    type: 'object',
@@ -60,7 +60,13 @@ exports.n8nManagementTools = [
                }
            },
            required: ['name', 'nodes', 'connections']
-        }
+        },
+        annotations: {
+            title: 'Create Workflow',
+            readOnlyHint: false,
+            destructiveHint: false,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_get_workflow',
@@ -80,7 +86,13 @@ exports.n8nManagementTools = [
                }
            },
            required: ['id']
-        }
+        },
+        annotations: {
+            title: 'Get Workflow',
+            readOnlyHint: true,
+            idempotentHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_update_full_workflow',
@@ -114,7 +126,14 @@ exports.n8nManagementTools = [
                }
            },
            required: ['id']
-        }
+        },
+        annotations: {
+            title: 'Update Full Workflow',
+            readOnlyHint: false,
+            destructiveHint: false,
+            idempotentHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_update_partial_workflow',
@@ -145,7 +164,14 @@ exports.n8nManagementTools = [
                }
            },
            required: ['id', 'operations']
-        }
+        },
+        annotations: {
+            title: 'Update Partial Workflow',
+            readOnlyHint: false,
+            destructiveHint: false,
+            idempotentHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_delete_workflow',
@@ -159,7 +185,13 @@ exports.n8nManagementTools = [
                }
            },
            required: ['id']
-        }
+        },
+        annotations: {
+            title: 'Delete Workflow',
+            readOnlyHint: false,
+            destructiveHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_list_workflows',
@@ -193,7 +225,13 @@ exports.n8nManagementTools = [
                    description: 'Exclude pinned data from response (default: true)'
                }
            }
-        }
+        },
+        annotations: {
+            title: 'List Workflows',
+            readOnlyHint: true,
+            idempotentHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_validate_workflow',
@@ -230,7 +268,13 @@ exports.n8nManagementTools = [
                }
            },
            required: ['id']
-        }
+        },
+        annotations: {
+            title: 'Validate Workflow',
+            readOnlyHint: true,
+            idempotentHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_autofix_workflow',
@@ -265,7 +309,14 @@ exports.n8nManagementTools = [
                }
            },
            required: ['id']
-        }
+        },
+        annotations: {
+            title: 'Autofix Workflow',
+            readOnlyHint: false,
+            destructiveHint: false,
+            idempotentHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_test_workflow',
@@ -317,7 +368,13 @@ exports.n8nManagementTools = [
                }
            },
            required: ['workflowId']
-        }
+        },
+        annotations: {
+            title: 'Test Workflow',
+            readOnlyHint: false,
+            destructiveHint: false,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_executions',
@@ -336,8 +393,8 @@ exports.n8nManagementTools = [
                },
                mode: {
                    type: 'string',
-                    enum: ['preview', 'summary', 'filtered', 'full'],
-                    description: 'For action=get: preview=structure only, summary=2 items (default), filtered=custom, full=all data'
+                    enum: ['preview', 'summary', 'filtered', 'full', 'error'],
+                    description: 'For action=get: preview=structure only, summary=2 items (default), filtered=custom, full=all data, error=optimized error debugging'
                },
                nodeNames: {
                    type: 'array',
@@ -352,6 +409,22 @@ exports.n8nManagementTools = [
                    type: 'boolean',
                    description: 'For action=get: include input data in addition to output (default: false)'
                },
+                errorItemsLimit: {
+                    type: 'number',
+                    description: 'For action=get with mode=error: sample items from upstream node (default: 2, max: 100)'
+                },
+                includeStackTrace: {
+                    type: 'boolean',
+                    description: 'For action=get with mode=error: include full stack trace (default: false, shows truncated)'
+                },
+                includeExecutionPath: {
+                    type: 'boolean',
+                    description: 'For action=get with mode=error: include execution path leading to error (default: true)'
+                },
+                fetchWorkflow: {
+                    type: 'boolean',
+                    description: 'For action=get with mode=error: fetch workflow for accurate upstream detection (default: true)'
+                },
                limit: {
                    type: 'number',
                    description: 'For action=list: number of executions to return (1-100, default: 100)'
@@ -379,7 +452,13 @@ exports.n8nManagementTools = [
                }
            },
            required: ['action']
-        }
+        },
+        annotations: {
+            title: 'Manage Executions',
+            readOnlyHint: false,
+            destructiveHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_health_check',
@@ -398,7 +477,13 @@ exports.n8nManagementTools = [
                    description: 'Include extra details in diagnostic mode (default: false)'
                }
            }
-        }
+        },
+        annotations: {
+            title: 'Health Check',
+            readOnlyHint: true,
+            idempotentHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_workflow_versions',
@@ -452,7 +537,13 @@ exports.n8nManagementTools = [
                }
            },
            required: ['mode']
-        }
+        },
+        annotations: {
+            title: 'Workflow Versions',
+            readOnlyHint: false,
+            destructiveHint: true,
+            openWorldHint: true,
+        },
    },
    {
        name: 'n8n_deploy_template',
@@ -485,7 +576,13 @@ exports.n8nManagementTools = [
                }
            },
            required: ['templateId']
-        }
+        },
+        annotations: {
+            title: 'Deploy Template',
+            readOnlyHint: false,
+            destructiveHint: false,
+            openWorldHint: true,
+        },
    }
 ];
 //# sourceMappingURL=tools-n8n-manager.js.map
--- a/dist/mcp/tools-n8n-manager.js.map
+++ b/dist/mcp/tools-n8n-manager.js.map
--- a/dist/mcp/tools.d.ts.map
+++ b/dist/mcp/tools.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"tools.d.ts","sourceRoot":"","sources":["../../src/mcp/tools.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,cAAc,EAAE,MAAM,UAAU,CAAC;AAQ1C,eAAO,MAAM,0BAA0B,EAAE,cAAc,EA+XtD,CAAC"}
+{"version":3,"file":"tools.d.ts","sourceRoot":"","sources":["../../src/mcp/tools.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,cAAc,EAAE,MAAM,UAAU,CAAC;AAQ1C,eAAO,MAAM,0BAA0B,EAAE,cAAc,EAkatD,CAAC"}
--- a/dist/mcp/tools.js
+++ b/dist/mcp/tools.js
@@ -20,6 +20,11 @@ exports.n8nDocumentationToolsFinal = [
                },
            },
        },
+        annotations: {
+            title: 'Tools Documentation',
+            readOnlyHint: true,
+            idempotentHint: true,
+        },
    },
    {
        name: 'search_nodes',
@@ -50,6 +55,11 @@ exports.n8nDocumentationToolsFinal = [
            },
            required: ['query'],
        },
+        annotations: {
+            title: 'Search Nodes',
+            readOnlyHint: true,
+            idempotentHint: true,
+        },
    },
    {
        name: 'get_node',
@@ -103,6 +113,11 @@ exports.n8nDocumentationToolsFinal = [
            },
            required: ['nodeType'],
        },
+        annotations: {
+            title: 'Get Node Info',
+            readOnlyHint: true,
+            idempotentHint: true,
+        },
    },
    {
        name: 'validate_node',
@@ -183,6 +198,11 @@ exports.n8nDocumentationToolsFinal = [
            },
            required: ['nodeType', 'displayName', 'valid']
        },
+        annotations: {
+            title: 'Validate Node Config',
+            readOnlyHint: true,
+            idempotentHint: true,
+        },
    },
    {
        name: 'get_template',
@@ -203,6 +223,11 @@ exports.n8nDocumentationToolsFinal = [
            },
            required: ['templateId'],
        },
+        annotations: {
+            title: 'Get Template',
+            readOnlyHint: true,
+            idempotentHint: true,
+        },
    },
    {
        name: 'search_templates',
@@ -293,6 +318,11 @@ exports.n8nDocumentationToolsFinal = [
                },
            },
        },
+        annotations: {
+            title: 'Search Templates',
+            readOnlyHint: true,
+            idempotentHint: true,
+        },
    },
    {
        name: 'validate_workflow',
@@ -378,6 +408,11 @@ exports.n8nDocumentationToolsFinal = [
            },
            required: ['valid', 'summary']
        },
+        annotations: {
+            title: 'Validate Workflow',
+            readOnlyHint: true,
+            idempotentHint: true,
+        },
    },
 ];
 //# sourceMappingURL=tools.js.map
--- a/dist/mcp/tools.js.map
+++ b/dist/mcp/tools.js.map
--- a/dist/parsers/node-parser.d.ts
+++ b/dist/parsers/node-parser.d.ts
@@ -17,6 +17,9 @@ export interface ParsedNode {
    documentation?: string;
    outputs?: any[];
    outputNames?: string[];
+    isToolVariant?: boolean;
+    toolVariantOf?: string;
+    hasToolVariant?: boolean;
 }
 export declare class NodeParser {
    private propertyExtractor;
--- a/dist/parsers/node-parser.d.ts.map
+++ b/dist/parsers/node-parser.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"node-parser.d.ts","sourceRoot":"","sources":["../../src/parsers/node-parser.ts"],"names":[],"mappings":"AACA,OAAO,KAAK,EACV,SAAS,EAEV,MAAM,qBAAqB,CAAC;AAQ7B,MAAM,WAAW,UAAU;IACzB,KAAK,EAAE,aAAa,GAAG,cAAc,CAAC;IACtC,QAAQ,EAAE,MAAM,CAAC;IACjB,WAAW,EAAE,MAAM,CAAC;IACpB,WAAW,CAAC,EAAE,MAAM,CAAC;IACrB,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,UAAU,EAAE,GAAG,EAAE,CAAC;IAClB,WAAW,EAAE,GAAG,EAAE,CAAC;IACnB,QAAQ,EAAE,OAAO,CAAC;IAClB,SAAS,EAAE,OAAO,CAAC;IACnB,SAAS,EAAE,OAAO,CAAC;IACnB,UAAU,EAAE,GAAG,EAAE,CAAC;IAClB,OAAO,CAAC,EAAE,MAAM,CAAC;IACjB,WAAW,EAAE,OAAO,CAAC;IACrB,WAAW,EAAE,MAAM,CAAC;IACpB,aAAa,CAAC,EAAE,MAAM,CAAC;IACvB,OAAO,CAAC,EAAE,GAAG,EAAE,CAAC;IAChB,WAAW,CAAC,EAAE,MAAM,EAAE,CAAC;CACxB;AAED,qBAAa,UAAU;IACrB,OAAO,CAAC,iBAAiB,CAA2B;IACpD,OAAO,CAAC,gBAAgB,CAA0B;IAElD,KAAK,CAAC,SAAS,EAAE,SAAS,EAAE,WAAW,EAAE,MAAM,GAAG,UAAU;IA0B5D,OAAO,CAAC,kBAAkB;IAoD1B,OAAO,CAAC,WAAW;IAKnB,OAAO,CAAC,eAAe;IAiBvB,OAAO,CAAC,eAAe;IAOvB,OAAO,CAAC,aAAa;IAkBrB,OAAO,CAAC,aAAa;IAyBrB,OAAO,CAAC,cAAc;IA0FtB,OAAO,CAAC,eAAe;IA2CvB,OAAO,CAAC,cAAc;CAsDvB"}
+{"version":3,"file":"node-parser.d.ts","sourceRoot":"","sources":["../../src/parsers/node-parser.ts"],"names":[],"mappings":"AACA,OAAO,KAAK,EACV,SAAS,EAEV,MAAM,qBAAqB,CAAC;AAQ7B,MAAM,WAAW,UAAU;IACzB,KAAK,EAAE,aAAa,GAAG,cAAc,CAAC;IACtC,QAAQ,EAAE,MAAM,CAAC;IACjB,WAAW,EAAE,MAAM,CAAC;IACpB,WAAW,CAAC,EAAE,MAAM,CAAC;IACrB,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,UAAU,EAAE,GAAG,EAAE,CAAC;IAClB,WAAW,EAAE,GAAG,EAAE,CAAC;IACnB,QAAQ,EAAE,OAAO,CAAC;IAClB,SAAS,EAAE,OAAO,CAAC;IACnB,SAAS,EAAE,OAAO,CAAC;IACnB,UAAU,EAAE,GAAG,EAAE,CAAC;IAClB,OAAO,CAAC,EAAE,MAAM,CAAC;IACjB,WAAW,EAAE,OAAO,CAAC;IACrB,WAAW,EAAE,MAAM,CAAC;IACpB,aAAa,CAAC,EAAE,MAAM,CAAC;IACvB,OAAO,CAAC,EAAE,GAAG,EAAE,CAAC;IAChB,WAAW,CAAC,EAAE,MAAM,EAAE,CAAC;IAEvB,aAAa,CAAC,EAAE,OAAO,CAAC;IACxB,aAAa,CAAC,EAAE,MAAM,CAAC;IACvB,cAAc,CAAC,EAAE,OAAO,CAAC;CAC1B;AAED,qBAAa,UAAU;IACrB,OAAO,CAAC,iBAAiB,CAA2B;IACpD,OAAO,CAAC,gBAAgB,CAA0B;IAElD,KAAK,CAAC,SAAS,EAAE,SAAS,EAAE,WAAW,EAAE,MAAM,GAAG,UAAU;IA0B5D,OAAO,CAAC,kBAAkB;IAoD1B,OAAO,CAAC,WAAW;IAKnB,OAAO,CAAC,eAAe;IAiBvB,OAAO,CAAC,eAAe;IAOvB,OAAO,CAAC,aAAa;IAkBrB,OAAO,CAAC,aAAa;IAyBrB,OAAO,CAAC,cAAc;IA0FtB,OAAO,CAAC,eAAe;IA2CvB,OAAO,CAAC,cAAc;CAsDvB"}
--- a/dist/parsers/node-parser.js.map
+++ b/dist/parsers/node-parser.js.map
--- a/dist/scripts/rebuild.js
+++ b/dist/scripts/rebuild.js
@@ -39,6 +39,7 @@ const node_loader_1 = require("../loaders/node-loader");
 const node_parser_1 = require("../parsers/node-parser");
 const docs_mapper_1 = require("../mappers/docs-mapper");
 const node_repository_1 = require("../database/node-repository");
+const tool_variant_generator_1 = require("../services/tool-variant-generator");
 const template_sanitizer_1 = require("../utils/template-sanitizer");
 const fs = __importStar(require("fs"));
 const path = __importStar(require("path"));
@@ -50,6 +51,7 @@ async function rebuild() {
    const parser = new node_parser_1.NodeParser();
    const mapper = new docs_mapper_1.DocsMapper();
    const repository = new node_repository_1.NodeRepository(db);
+    const toolVariantGenerator = new tool_variant_generator_1.ToolVariantGenerator();
    const schema = fs.readFileSync(path.join(__dirname, '../../src/database/schema.sql'), 'utf8');
    db.exec(schema);
    db.exec('DELETE FROM nodes');
@@ -64,7 +66,8 @@ async function rebuild() {
        webhooks: 0,
        withProperties: 0,
        withOperations: 0,
-        withDocs: 0
+        withDocs: 0,
+        toolVariants: 0
    };
    console.log('🔄 Processing nodes...');
    const processedNodes = [];
@@ -79,6 +82,18 @@ async function rebuild() {
            }
            const docs = await mapper.fetchDocumentation(parsed.nodeType);
            parsed.documentation = docs || undefined;
+            if (parsed.isAITool && !parsed.isTrigger) {
+                const toolVariant = toolVariantGenerator.generateToolVariant(parsed);
+                if (toolVariant) {
+                    parsed.hasToolVariant = true;
+                    processedNodes.push({
+                        parsed: toolVariant,
+                        docs: undefined,
+                        nodeName: `${nodeName}Tool`
+                    });
+                    stats.toolVariants++;
+                }
+            }
            processedNodes.push({ parsed, docs: docs || undefined, nodeName });
        }
        catch (error) {
@@ -135,6 +150,7 @@ async function rebuild() {
    console.log(`   Successful: ${stats.successful}`);
    console.log(`   Failed: ${stats.failed}`);
    console.log(`   AI Tools: ${stats.aiTools}`);
+    console.log(`   Tool Variants: ${stats.toolVariants}`);
    console.log(`   Triggers: ${stats.triggers}`);
    console.log(`   Webhooks: ${stats.webhooks}`);
    console.log(`   With Properties: ${stats.withProperties}`);
@@ -165,6 +181,7 @@ async function rebuild() {
    console.log('\n✨ Rebuild complete!');
    db.close();
 }
+const MIN_EXPECTED_TOOL_VARIANTS = 200;
 function validateDatabase(repository) {
    const issues = [];
    try {
@@ -192,6 +209,13 @@ function validateDatabase(repository) {
        if (aiTools.length === 0) {
            issues.push('No AI tools found - check detection logic');
        }
+        const toolVariantCount = repository.getToolVariantCount();
+        if (toolVariantCount === 0) {
+            issues.push('No Tool variants found - check ToolVariantGenerator');
+        }
+        else if (toolVariantCount < MIN_EXPECTED_TOOL_VARIANTS) {
+            issues.push(`Only ${toolVariantCount} Tool variants found - expected at least ${MIN_EXPECTED_TOOL_VARIANTS}`);
+        }
        const ftsTableCheck = db.prepare(`
      SELECT name FROM sqlite_master
      WHERE type='table' AND name='nodes_fts'
--- a/dist/scripts/rebuild.js.map
+++ b/dist/scripts/rebuild.js.map
--- a/dist/services/config-validator.d.ts
+++ b/dist/services/config-validator.d.ts
@@ -30,7 +30,9 @@ export declare class ConfigValidator {
    }>): ValidationResult[];
    private static checkRequiredProperties;
    private static getPropertyVisibility;
-    protected static isPropertyVisible(prop: any, config: Record<string, any>): boolean;
+    private static evaluateCondition;
+    private static valueMatches;
+    static isPropertyVisible(prop: any, config: Record<string, any>): boolean;
    private static validatePropertyTypes;
    private static performNodeSpecificValidation;
    private static validateHttpRequest;
--- a/dist/services/config-validator.d.ts.map
+++ b/dist/services/config-validator.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"config-validator.d.ts","sourceRoot":"","sources":["../../src/services/config-validator.ts"],"names":[],"mappings":"AASA,MAAM,WAAW,gBAAgB;IAC/B,KAAK,EAAE,OAAO,CAAC;IACf,MAAM,EAAE,eAAe,EAAE,CAAC;IAC1B,QAAQ,EAAE,iBAAiB,EAAE,CAAC;IAC9B,WAAW,EAAE,MAAM,EAAE,CAAC;IACtB,iBAAiB,EAAE,MAAM,EAAE,CAAC;IAC5B,gBAAgB,EAAE,MAAM,EAAE,CAAC;IAC3B,OAAO,CAAC,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;CAC/B;AAED,MAAM,WAAW,eAAe;IAC9B,IAAI,EAAE,kBAAkB,GAAG,cAAc,GAAG,eAAe,GAAG,cAAc,GAAG,uBAAuB,GAAG,cAAc,CAAC;IACxH,QAAQ,EAAE,MAAM,CAAC;IACjB,OAAO,EAAE,MAAM,CAAC;IAChB,GAAG,CAAC,EAAE,MAAM,CAAC;IACb,UAAU,CAAC,EAAE,MAAM,CAAC;CACrB;AAED,MAAM,WAAW,iBAAiB;IAChC,IAAI,EAAE,gBAAgB,GAAG,YAAY,GAAG,aAAa,GAAG,UAAU,GAAG,eAAe,GAAG,eAAe,CAAC;IACvG,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,OAAO,EAAE,MAAM,CAAC;IAChB,UAAU,CAAC,EAAE,MAAM,CAAC;CACrB;AAED,qBAAa,eAAe;IAI1B,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,aAAa,CAA4C;IAKjF,MAAM,CAAC,QAAQ,CACb,QAAQ,EAAE,MAAM,EAChB,MAAM,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,EAC3B,UAAU,EAAE,GAAG,EAAE,EACjB,gBAAgB,CAAC,EAAE,GAAG,CAAC,MAAM,CAAC,GAC7B,gBAAgB;IAsDnB,MAAM,CAAC,aAAa,CAClB,OAAO,EAAE,KAAK,CAAC;QACb,QAAQ,EAAE,MAAM,CAAC;QACjB,MAAM,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;QAC5B,UAAU,EAAE,GAAG,EAAE,CAAC;KACnB,CAAC,GACD,gBAAgB,EAAE;IASrB,OAAO,CAAC,MAAM,CAAC,uBAAuB;IA0CtC,OAAO,CAAC,MAAM,CAAC,qBAAqB;IAqBpC,SAAS,CAAC,MAAM,CAAC,iBAAiB,CAAC,IAAI,EAAE,GAAG,EAAE,MAAM,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,GAAG,OAAO;IAiCnF,OAAO,CAAC,MAAM,CAAC,qBAAqB;IAoIpC,OAAO,CAAC,MAAM,CAAC,6BAA6B;IA+B5C,OAAO,CAAC,MAAM,CAAC,mBAAmB;IAoElC,OAAO,CAAC,MAAM,CAAC,eAAe;IAc9B,OAAO,CAAC,MAAM,CAAC,gBAAgB;IAoC/B,OAAO,CAAC,MAAM,CAAC,YAAY;IAyC3B,OAAO,CAAC,MAAM,CAAC,iBAAiB;IAgEhC,OAAO,CAAC,MAAM,CAAC,qBAAqB;IAmCpC,OAAO,CAAC,MAAM,CAAC,wBAAwB;IA6BvC,OAAO,CAAC,MAAM,CAAC,wBAAwB;IA4CvC,OAAO,CAAC,MAAM,CAAC,oBAAoB;IAgEnC,OAAO,CAAC,MAAM,CAAC,uBAAuB;CAmOvC"}
+{"version":3,"file":"config-validator.d.ts","sourceRoot":"","sources":["../../src/services/config-validator.ts"],"names":[],"mappings":"AASA,MAAM,WAAW,gBAAgB;IAC/B,KAAK,EAAE,OAAO,CAAC;IACf,MAAM,EAAE,eAAe,EAAE,CAAC;IAC1B,QAAQ,EAAE,iBAAiB,EAAE,CAAC;IAC9B,WAAW,EAAE,MAAM,EAAE,CAAC;IACtB,iBAAiB,EAAE,MAAM,EAAE,CAAC;IAC5B,gBAAgB,EAAE,MAAM,EAAE,CAAC;IAC3B,OAAO,CAAC,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;CAC/B;AAED,MAAM,WAAW,eAAe;IAC9B,IAAI,EAAE,kBAAkB,GAAG,cAAc,GAAG,eAAe,GAAG,cAAc,GAAG,uBAAuB,GAAG,cAAc,CAAC;IACxH,QAAQ,EAAE,MAAM,CAAC;IACjB,OAAO,EAAE,MAAM,CAAC;IAChB,GAAG,CAAC,EAAE,MAAM,CAAC;IACb,UAAU,CAAC,EAAE,MAAM,CAAC;CACrB;AAED,MAAM,WAAW,iBAAiB;IAChC,IAAI,EAAE,gBAAgB,GAAG,YAAY,GAAG,aAAa,GAAG,UAAU,GAAG,eAAe,GAAG,eAAe,CAAC;IACvG,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,OAAO,EAAE,MAAM,CAAC;IAChB,UAAU,CAAC,EAAE,MAAM,CAAC;CACrB;AAED,qBAAa,eAAe;IAI1B,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,aAAa,CAA4C;IAKjF,MAAM,CAAC,QAAQ,CACb,QAAQ,EAAE,MAAM,EAChB,MAAM,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,EAC3B,UAAU,EAAE,GAAG,EAAE,EACjB,gBAAgB,CAAC,EAAE,GAAG,CAAC,MAAM,CAAC,GAC7B,gBAAgB;IAsDnB,MAAM,CAAC,aAAa,CAClB,OAAO,EAAE,KAAK,CAAC;QACb,QAAQ,EAAE,MAAM,CAAC;QACjB,MAAM,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;QAC5B,UAAU,EAAE,GAAG,EAAE,CAAC;KACnB,CAAC,GACD,gBAAgB,EAAE;IASrB,OAAO,CAAC,MAAM,CAAC,uBAAuB;IA0CtC,OAAO,CAAC,MAAM,CAAC,qBAAqB;IAsBpC,OAAO,CAAC,MAAM,CAAC,iBAAiB;IAgDhC,OAAO,CAAC,MAAM,CAAC,YAAY;WAab,iBAAiB,CAAC,IAAI,EAAE,GAAG,EAAE,MAAM,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,GAAG,OAAO;IA2ChF,OAAO,CAAC,MAAM,CAAC,qBAAqB;IAoIpC,OAAO,CAAC,MAAM,CAAC,6BAA6B;IA+B5C,OAAO,CAAC,MAAM,CAAC,mBAAmB;IAoElC,OAAO,CAAC,MAAM,CAAC,eAAe;IAc9B,OAAO,CAAC,MAAM,CAAC,gBAAgB;IAoC/B,OAAO,CAAC,MAAM,CAAC,YAAY;IAyC3B,OAAO,CAAC,MAAM,CAAC,iBAAiB;IAgEhC,OAAO,CAAC,MAAM,CAAC,qBAAqB;IAmCpC,OAAO,CAAC,MAAM,CAAC,wBAAwB;IA6BvC,OAAO,CAAC,MAAM,CAAC,wBAAwB;IA4CvC,OAAO,CAAC,MAAM,CAAC,oBAAoB;IAgEnC,OAAO,CAAC,MAAM,CAAC,uBAAuB;CAmOvC"}
--- a/dist/services/config-validator.js
+++ b/dist/services/config-validator.js
@@ -83,6 +83,57 @@ class ConfigValidator {
        }
        return { visible, hidden };
    }
+    static evaluateCondition(condition, configValue) {
+        const cnd = condition._cnd;
+        if ('eq' in cnd)
+            return configValue === cnd.eq;
+        if ('not' in cnd)
+            return configValue !== cnd.not;
+        if ('gte' in cnd)
+            return configValue >= cnd.gte;
+        if ('lte' in cnd)
+            return configValue <= cnd.lte;
+        if ('gt' in cnd)
+            return configValue > cnd.gt;
+        if ('lt' in cnd)
+            return configValue < cnd.lt;
+        if ('between' in cnd) {
+            const between = cnd.between;
+            if (!between || typeof between.from === 'undefined' || typeof between.to === 'undefined') {
+                return false;
+            }
+            return configValue >= between.from && configValue <= between.to;
+        }
+        if ('startsWith' in cnd) {
+            return typeof configValue === 'string' && configValue.startsWith(cnd.startsWith);
+        }
+        if ('endsWith' in cnd) {
+            return typeof configValue === 'string' && configValue.endsWith(cnd.endsWith);
+        }
+        if ('includes' in cnd) {
+            return typeof configValue === 'string' && configValue.includes(cnd.includes);
+        }
+        if ('regex' in cnd) {
+            if (typeof configValue !== 'string')
+                return false;
+            try {
+                return new RegExp(cnd.regex).test(configValue);
+            }
+            catch {
+                return false;
+            }
+        }
+        if ('exists' in cnd) {
+            return configValue !== undefined && configValue !== null;
+        }
+        return false;
+    }
+    static valueMatches(expectedValue, configValue) {
+        if (expectedValue && typeof expectedValue === 'object' && '_cnd' in expectedValue) {
+            return this.evaluateCondition(expectedValue, configValue);
+        }
+        return configValue === expectedValue;
+    }
    static isPropertyVisible(prop, config) {
        if (!prop.displayOptions)
            return true;
@@ -90,7 +141,8 @@ class ConfigValidator {
            for (const [key, values] of Object.entries(prop.displayOptions.show)) {
                const configValue = config[key];
                const expectedValues = Array.isArray(values) ? values : [values];
-                if (!expectedValues.includes(configValue)) {
+                const anyMatch = expectedValues.some(expected => this.valueMatches(expected, configValue));
+                if (!anyMatch) {
                    return false;
                }
            }
@@ -99,7 +151,8 @@ class ConfigValidator {
            for (const [key, values] of Object.entries(prop.displayOptions.hide)) {
                const configValue = config[key];
                const expectedValues = Array.isArray(values) ? values : [values];
-                if (expectedValues.includes(configValue)) {
+                const anyMatch = expectedValues.some(expected => this.valueMatches(expected, configValue));
+                if (anyMatch) {
                    return false;
                }
            }
--- a/dist/services/config-validator.js.map
+++ b/dist/services/config-validator.js.map
--- a/dist/services/execution-processor.d.ts
+++ b/dist/services/execution-processor.d.ts
@@ -1,8 +1,8 @@
-import { Execution, ExecutionPreview, ExecutionRecommendation, ExecutionFilterOptions, FilteredExecutionResponse } from '../types/n8n-api';
+import { Execution, ExecutionPreview, ExecutionRecommendation, ExecutionFilterOptions, FilteredExecutionResponse, Workflow } from '../types/n8n-api';
 export declare function generatePreview(execution: Execution): {
    preview: ExecutionPreview;
    recommendation: ExecutionRecommendation;
 };
-export declare function filterExecutionData(execution: Execution, options: ExecutionFilterOptions): FilteredExecutionResponse;
-export declare function processExecution(execution: Execution, options?: ExecutionFilterOptions): FilteredExecutionResponse | Execution;
+export declare function filterExecutionData(execution: Execution, options: ExecutionFilterOptions, workflow?: Workflow): FilteredExecutionResponse;
+export declare function processExecution(execution: Execution, options?: ExecutionFilterOptions, workflow?: Workflow): FilteredExecutionResponse | Execution;
 //# sourceMappingURL=execution-processor.d.ts.map
--- a/dist/services/execution-processor.d.ts.map
+++ b/dist/services/execution-processor.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"execution-processor.d.ts","sourceRoot":"","sources":["../../src/services/execution-processor.ts"],"names":[],"mappings":"AAaA,OAAO,EACL,SAAS,EAET,gBAAgB,EAEhB,uBAAuB,EACvB,sBAAsB,EACtB,yBAAyB,EAG1B,MAAM,kBAAkB,CAAC;AA+G1B,wBAAgB,eAAe,CAAC,SAAS,EAAE,SAAS,GAAG;IACrD,OAAO,EAAE,gBAAgB,CAAC;IAC1B,cAAc,EAAE,uBAAuB,CAAC;CACzC,CA2EA;AAoID,wBAAgB,mBAAmB,CACjC,SAAS,EAAE,SAAS,EACpB,OAAO,EAAE,sBAAsB,GAC9B,yBAAyB,CA2J3B;AAMD,wBAAgB,gBAAgB,CAC9B,SAAS,EAAE,SAAS,EACpB,OAAO,GAAE,sBAA2B,GACnC,yBAAyB,GAAG,SAAS,CAOvC"}
+{"version":3,"file":"execution-processor.d.ts","sourceRoot":"","sources":["../../src/services/execution-processor.ts"],"names":[],"mappings":"AAaA,OAAO,EACL,SAAS,EAET,gBAAgB,EAEhB,uBAAuB,EACvB,sBAAsB,EACtB,yBAAyB,EAGzB,QAAQ,EACT,MAAM,kBAAkB,CAAC;AAgH1B,wBAAgB,eAAe,CAAC,SAAS,EAAE,SAAS,GAAG;IACrD,OAAO,EAAE,gBAAgB,CAAC;IAC1B,cAAc,EAAE,uBAAuB,CAAC;CACzC,CA2EA;AAoID,wBAAgB,mBAAmB,CACjC,SAAS,EAAE,SAAS,EACpB,OAAO,EAAE,sBAAsB,EAC/B,QAAQ,CAAC,EAAE,QAAQ,GAClB,yBAAyB,CAsL3B;AAMD,wBAAgB,gBAAgB,CAC9B,SAAS,EAAE,SAAS,EACpB,OAAO,GAAE,sBAA2B,EACpC,QAAQ,CAAC,EAAE,QAAQ,GAClB,yBAAyB,GAAG,SAAS,CAOvC"}
--- a/dist/services/execution-processor.js
+++ b/dist/services/execution-processor.js
@@ -4,6 +4,7 @@ exports.generatePreview = generatePreview;
 exports.filterExecutionData = filterExecutionData;
 exports.processExecution = processExecution;
 const logger_1 = require("../utils/logger");
+const error_execution_processor_1 = require("./error-execution-processor");
 const THRESHOLDS = {
    CHAR_SIZE_BYTES: 2,
    OVERHEAD_PER_OBJECT: 50,
@@ -231,7 +232,7 @@ function truncateItems(items, limit) {
        },
    };
 }
-function filterExecutionData(execution, options) {
+function filterExecutionData(execution, options, workflow) {
    const mode = options.mode || 'summary';
    let itemsLimit = options.itemsLimit !== undefined ? options.itemsLimit : 2;
    if (itemsLimit !== -1) {
@@ -265,6 +266,27 @@ function filterExecutionData(execution, options) {
        response.recommendation = recommendation;
        return response;
    }
+    if (mode === 'error') {
+        const errorAnalysis = (0, error_execution_processor_1.processErrorExecution)(execution, {
+            itemsLimit: options.errorItemsLimit ?? 2,
+            includeStackTrace: options.includeStackTrace ?? false,
+            includeExecutionPath: options.includeExecutionPath !== false,
+            workflow
+        });
+        const runData = execution.data?.resultData?.runData || {};
+        const executedNodes = Object.keys(runData).length;
+        response.errorInfo = errorAnalysis;
+        response.summary = {
+            totalNodes: executedNodes,
+            executedNodes,
+            totalItems: 0,
+            hasMoreData: false
+        };
+        if (execution.data?.resultData?.error) {
+            response.error = execution.data.resultData.error;
+        }
+        return response;
+    }
    if (!execution.data?.resultData?.runData) {
        response.summary = {
            totalNodes: 0,
@@ -350,10 +372,10 @@ function filterExecutionData(execution, options) {
    }
    return response;
 }
-function processExecution(execution, options = {}) {
+function processExecution(execution, options = {}, workflow) {
    if (!options.mode && !options.nodeNames && options.itemsLimit === undefined) {
        return execution;
    }
-    return filterExecutionData(execution, options);
+    return filterExecutionData(execution, options, workflow);
 }
 //# sourceMappingURL=execution-processor.js.map
--- a/dist/services/execution-processor.js.map
+++ b/dist/services/execution-processor.js.map
--- a/dist/services/n8n-api-client.d.ts
+++ b/dist/services/n8n-api-client.d.ts
@@ -10,9 +10,10 @@ export declare class N8nApiClient {
    private maxRetries;
    private baseUrl;
    private versionInfo;
-    private versionFetched;
+    private versionPromise;
    constructor(config: N8nApiClientConfig);
    getVersion(): Promise<N8nVersionInfo | null>;
+    private fetchVersionOnce;
    getCachedVersionInfo(): N8nVersionInfo | null;
    healthCheck(): Promise<HealthCheckResponse>;
    createWorkflow(workflow: Partial<Workflow>): Promise<Workflow>;
--- a/dist/services/n8n-api-client.d.ts.map
+++ b/dist/services/n8n-api-client.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"n8n-api-client.d.ts","sourceRoot":"","sources":["../../src/services/n8n-api-client.ts"],"names":[],"mappings":"AAEA,OAAO,EACL,QAAQ,EACR,kBAAkB,EAClB,oBAAoB,EACpB,SAAS,EACT,mBAAmB,EACnB,qBAAqB,EACrB,UAAU,EACV,oBAAoB,EACpB,sBAAsB,EACtB,GAAG,EACH,aAAa,EACb,eAAe,EACf,mBAAmB,EACnB,cAAc,EACd,QAAQ,EACR,cAAc,EAGd,mBAAmB,EACnB,uBAAuB,EACvB,uBAAuB,EACxB,MAAM,kBAAkB,CAAC;AAS1B,MAAM,WAAW,kBAAkB;IACjC,OAAO,EAAE,MAAM,CAAC;IAChB,MAAM,EAAE,MAAM,CAAC;IACf,OAAO,CAAC,EAAE,MAAM,CAAC;IACjB,UAAU,CAAC,EAAE,MAAM,CAAC;CACrB;AAED,qBAAa,YAAY;IACvB,OAAO,CAAC,MAAM,CAAgB;IAC9B,OAAO,CAAC,UAAU,CAAS;IAC3B,OAAO,CAAC,OAAO,CAAS;IACxB,OAAO,CAAC,WAAW,CAA+B;IAClD,OAAO,CAAC,cAAc,CAAS;gBAEnB,MAAM,EAAE,kBAAkB;IAoDhC,UAAU,IAAI,OAAO,CAAC,cAAc,GAAG,IAAI,CAAC;IAgBlD,oBAAoB,IAAI,cAAc,GAAG,IAAI;IAKvC,WAAW,IAAI,OAAO,CAAC,mBAAmB,CAAC;IA6C3C,cAAc,CAAC,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC;IAU9D,WAAW,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS1C,cAAc,CAAC,EAAE,EAAE,MAAM,EAAE,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC;IAsC1E,cAAc,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS7C,gBAAgB,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS/C,kBAAkB,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,QAAQ,CAAC;IAsBjD,aAAa,CAAC,MAAM,GAAE,kBAAuB,GAAG,OAAO,CAAC,oBAAoB,CAAC;IAU7E,YAAY,CAAC,EAAE,EAAE,MAAM,EAAE,WAAW,UAAQ,GAAG,OAAO,CAAC,SAAS,CAAC;IAwBjE,cAAc,CAAC,MAAM,GAAE,mBAAwB,GAAG,OAAO,CAAC,qBAAqB,CAAC;IAShF,eAAe,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IAS1C,cAAc,CAAC,OAAO,EAAE,cAAc,GAAG,OAAO,CAAC,GAAG,CAAC;IAiErD,eAAe,CAAC,MAAM,GAAE,oBAAyB,GAAG,OAAO,CAAC,sBAAsB,CAAC;IASnF,aAAa,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,UAAU,CAAC;IAS9C,gBAAgB,CAAC,UAAU,EAAE,OAAO,CAAC,UAAU,CAAC,GAAG,OAAO,CAAC,UAAU,CAAC;IAStE,gBAAgB,CAAC,EAAE,EAAE,MAAM,EAAE,UAAU,EAAE,OAAO,CAAC,UAAU,CAAC,GAAG,OAAO,CAAC,UAAU,CAAC;IASlF,gBAAgB,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IAsB3C,QAAQ,CAAC,MAAM,GAAE,aAAkB,GAAG,OAAO,CAAC,eAAe,CAAC;IAS9D,SAAS,CAAC,GAAG,EAAE,OAAO,CAAC,GAAG,CAAC,GAAG,OAAO,CAAC,GAAG,CAAC;IAS1C,SAAS,CAAC,EAAE,EAAE,MAAM,EAAE,GAAG,EAAE,OAAO,CAAC,GAAG,CAAC,GAAG,OAAO,CAAC,GAAG,CAAC;IAStD,SAAS,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IASpC,sBAAsB,IAAI,OAAO,CAAC,mBAAmB,CAAC;IAStD,iBAAiB,CAAC,KAAK,UAAQ,GAAG,OAAO,CAAC,uBAAuB,CAAC;IASlE,iBAAiB,CACrB,OAAO,EAAE,MAAM,EACf,SAAS,CAAC,EAAE,MAAM,EAAE,GACnB,OAAO,CAAC,uBAAuB,CAAC;IAa7B,YAAY,IAAI,OAAO,CAAC,QAAQ,EAAE,CAAC;IAWnC,cAAc,CAAC,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS9D,cAAc,CAAC,EAAE,EAAE,MAAM,EAAE,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS1E,cAAc,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IAiB/C,OAAO,CAAC,oBAAoB;CAmC7B"}
+{"version":3,"file":"n8n-api-client.d.ts","sourceRoot":"","sources":["../../src/services/n8n-api-client.ts"],"names":[],"mappings":"AAEA,OAAO,EACL,QAAQ,EACR,kBAAkB,EAClB,oBAAoB,EACpB,SAAS,EACT,mBAAmB,EACnB,qBAAqB,EACrB,UAAU,EACV,oBAAoB,EACpB,sBAAsB,EACtB,GAAG,EACH,aAAa,EACb,eAAe,EACf,mBAAmB,EACnB,cAAc,EACd,QAAQ,EACR,cAAc,EAGd,mBAAmB,EACnB,uBAAuB,EACvB,uBAAuB,EACxB,MAAM,kBAAkB,CAAC;AAS1B,MAAM,WAAW,kBAAkB;IACjC,OAAO,EAAE,MAAM,CAAC;IAChB,MAAM,EAAE,MAAM,CAAC;IACf,OAAO,CAAC,EAAE,MAAM,CAAC;IACjB,UAAU,CAAC,EAAE,MAAM,CAAC;CACrB;AAED,qBAAa,YAAY;IACvB,OAAO,CAAC,MAAM,CAAgB;IAC9B,OAAO,CAAC,UAAU,CAAS;IAC3B,OAAO,CAAC,OAAO,CAAS;IACxB,OAAO,CAAC,WAAW,CAA+B;IAClD,OAAO,CAAC,cAAc,CAA+C;gBAEzD,MAAM,EAAE,kBAAkB;IAqDhC,UAAU,IAAI,OAAO,CAAC,cAAc,GAAG,IAAI,CAAC;YAyBpC,gBAAgB;IAa9B,oBAAoB,IAAI,cAAc,GAAG,IAAI;IAKvC,WAAW,IAAI,OAAO,CAAC,mBAAmB,CAAC;IA6C3C,cAAc,CAAC,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC;IAU9D,WAAW,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS1C,cAAc,CAAC,EAAE,EAAE,MAAM,EAAE,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC;IAsC1E,cAAc,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS7C,gBAAgB,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS/C,kBAAkB,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,QAAQ,CAAC;IAsBjD,aAAa,CAAC,MAAM,GAAE,kBAAuB,GAAG,OAAO,CAAC,oBAAoB,CAAC;IAU7E,YAAY,CAAC,EAAE,EAAE,MAAM,EAAE,WAAW,UAAQ,GAAG,OAAO,CAAC,SAAS,CAAC;IAwBjE,cAAc,CAAC,MAAM,GAAE,mBAAwB,GAAG,OAAO,CAAC,qBAAqB,CAAC;IAShF,eAAe,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IAS1C,cAAc,CAAC,OAAO,EAAE,cAAc,GAAG,OAAO,CAAC,GAAG,CAAC;IAiErD,eAAe,CAAC,MAAM,GAAE,oBAAyB,GAAG,OAAO,CAAC,sBAAsB,CAAC;IASnF,aAAa,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,UAAU,CAAC;IAS9C,gBAAgB,CAAC,UAAU,EAAE,OAAO,CAAC,UAAU,CAAC,GAAG,OAAO,CAAC,UAAU,CAAC;IAStE,gBAAgB,CAAC,EAAE,EAAE,MAAM,EAAE,UAAU,EAAE,OAAO,CAAC,UAAU,CAAC,GAAG,OAAO,CAAC,UAAU,CAAC;IASlF,gBAAgB,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IAsB3C,QAAQ,CAAC,MAAM,GAAE,aAAkB,GAAG,OAAO,CAAC,eAAe,CAAC;IAS9D,SAAS,CAAC,GAAG,EAAE,OAAO,CAAC,GAAG,CAAC,GAAG,OAAO,CAAC,GAAG,CAAC;IAS1C,SAAS,CAAC,EAAE,EAAE,MAAM,EAAE,GAAG,EAAE,OAAO,CAAC,GAAG,CAAC,GAAG,OAAO,CAAC,GAAG,CAAC;IAStD,SAAS,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IASpC,sBAAsB,IAAI,OAAO,CAAC,mBAAmB,CAAC;IAStD,iBAAiB,CAAC,KAAK,UAAQ,GAAG,OAAO,CAAC,uBAAuB,CAAC;IASlE,iBAAiB,CACrB,OAAO,EAAE,MAAM,EACf,SAAS,CAAC,EAAE,MAAM,EAAE,GACnB,OAAO,CAAC,uBAAuB,CAAC;IAa7B,YAAY,IAAI,OAAO,CAAC,QAAQ,EAAE,CAAC;IAWnC,cAAc,CAAC,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS9D,cAAc,CAAC,EAAE,EAAE,MAAM,EAAE,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC;IAS1E,cAAc,CAAC,EAAE,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IAiB/C,OAAO,CAAC,oBAAoB;CAmC7B"}
--- a/dist/services/n8n-api-client.js
+++ b/dist/services/n8n-api-client.js
@@ -45,7 +45,7 @@ const n8n_version_1 = require("./n8n-version");
 class N8nApiClient {
    constructor(config) {
        this.versionInfo = null;
-        this.versionFetched = false;
+        this.versionPromise = null;
        const { baseUrl, apiKey, timeout = 30000, maxRetries = 3 } = config;
        this.maxRetries = maxRetries;
        this.baseUrl = baseUrl;
@@ -80,14 +80,27 @@ class N8nApiClient {
        });
    }
    async getVersion() {
-        if (!this.versionFetched) {
-            this.versionInfo = (0, n8n_version_1.getCachedVersion)(this.baseUrl);
-            if (!this.versionInfo) {
-                this.versionInfo = await (0, n8n_version_1.fetchN8nVersion)(this.baseUrl);
-            }
-            this.versionFetched = true;
+        if (this.versionInfo) {
+            return this.versionInfo;
        }
-        return this.versionInfo;
+        if (this.versionPromise) {
+            return this.versionPromise;
+        }
+        this.versionPromise = this.fetchVersionOnce();
+        try {
+            this.versionInfo = await this.versionPromise;
+            return this.versionInfo;
+        }
+        finally {
+            this.versionPromise = null;
+        }
+    }
+    async fetchVersionOnce() {
+        let version = (0, n8n_version_1.getCachedVersion)(this.baseUrl);
+        if (!version) {
+            version = await (0, n8n_version_1.fetchN8nVersion)(this.baseUrl);
+        }
+        return version;
    }
    getCachedVersionInfo() {
        return this.versionInfo;
--- a/dist/services/n8n-api-client.js.map
+++ b/dist/services/n8n-api-client.js.map
--- a/dist/services/n8n-validation.d.ts.map
+++ b/dist/services/n8n-validation.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"n8n-validation.d.ts","sourceRoot":"","sources":["../../src/services/n8n-validation.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,CAAC,EAAE,MAAM,KAAK,CAAC;AACxB,OAAO,EAAE,YAAY,EAAE,kBAAkB,EAAE,QAAQ,EAAE,MAAM,kBAAkB,CAAC;AAM9E,eAAO,MAAM,kBAAkB;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;EAiB7B,CAAC;AAkBH,eAAO,MAAM,wBAAwB;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GAUpC,CAAC;AAEF,eAAO,MAAM,sBAAsB;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;EAWjC,CAAC;AAGH,eAAO,MAAM,uBAAuB;;;;;;CAMnC,CAAC;AAGF,wBAAgB,oBAAoB,CAAC,IAAI,EAAE,OAAO,GAAG,YAAY,CAEhE;AAED,wBAAgB,2BAA2B,CAAC,WAAW,EAAE,OAAO,GAAG,kBAAkB,CAEpF;AAED,wBAAgB,wBAAwB,CAAC,QAAQ,EAAE,OAAO,GAAG,CAAC,CAAC,KAAK,CAAC,OAAO,sBAAsB,CAAC,CAElG;AAGD,wBAAgB,sBAAsB,CAAC,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC,CAsBrF;AAiBD,wBAAgB,sBAAsB,CAAC,QAAQ,EAAE,QAAQ,GAAG,OAAO,CAAC,QAAQ,CAAC,CA4D5E;AAGD,wBAAgB,yBAAyB,CAAC,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,MAAM,EAAE,CAyP/E;AAGD,wBAAgB,iBAAiB,CAAC,QAAQ,EAAE,QAAQ,GAAG,OAAO,CAK7D;AAMD,wBAAgB,+BAA+B,CAAC,IAAI,EAAE,YAAY,GAAG,MAAM,EAAE,CA+F5E;AAMD,wBAAgB,yBAAyB,CAAC,QAAQ,EAAE,GAAG,EAAE,IAAI,EAAE,MAAM,GAAG,MAAM,EAAE,CA0D/E;AAGD,wBAAgB,aAAa,CAAC,QAAQ,EAAE,QAAQ,GAAG,MAAM,GAAG,IAAI,CAmB/D;AAGD,wBAAgB,2BAA2B,IAAI,MAAM,CA6CpD;AAGD,wBAAgB,yBAAyB,CAAC,MAAM,EAAE,MAAM,EAAE,GAAG,MAAM,EAAE,CAmBpE"}
+{"version":3,"file":"n8n-validation.d.ts","sourceRoot":"","sources":["../../src/services/n8n-validation.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,CAAC,EAAE,MAAM,KAAK,CAAC;AACxB,OAAO,EAAE,YAAY,EAAE,kBAAkB,EAAE,QAAQ,EAAE,MAAM,kBAAkB,CAAC;AAM9E,eAAO,MAAM,kBAAkB;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;EAiB7B,CAAC;AAkBH,eAAO,MAAM,wBAAwB;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GAUpC,CAAC;AAEF,eAAO,MAAM,sBAAsB;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;EAWjC,CAAC;AAGH,eAAO,MAAM,uBAAuB;;;;;;CAMnC,CAAC;AAGF,wBAAgB,oBAAoB,CAAC,IAAI,EAAE,OAAO,GAAG,YAAY,CAEhE;AAED,wBAAgB,2BAA2B,CAAC,WAAW,EAAE,OAAO,GAAG,kBAAkB,CAEpF;AAED,wBAAgB,wBAAwB,CAAC,QAAQ,EAAE,OAAO,GAAG,CAAC,CAAC,KAAK,CAAC,OAAO,sBAAsB,CAAC,CAElG;AAGD,wBAAgB,sBAAsB,CAAC,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,OAAO,CAAC,QAAQ,CAAC,CAsBrF;AAiBD,wBAAgB,sBAAsB,CAAC,QAAQ,EAAE,QAAQ,GAAG,OAAO,CAAC,QAAQ,CAAC,CAoE5E;AAGD,wBAAgB,yBAAyB,CAAC,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,GAAG,MAAM,EAAE,CA6P/E;AAGD,wBAAgB,iBAAiB,CAAC,QAAQ,EAAE,QAAQ,GAAG,OAAO,CAK7D;AAMD,wBAAgB,+BAA+B,CAAC,IAAI,EAAE,YAAY,GAAG,MAAM,EAAE,CA+F5E;AAMD,wBAAgB,yBAAyB,CAAC,QAAQ,EAAE,GAAG,EAAE,IAAI,EAAE,MAAM,GAAG,MAAM,EAAE,CA0D/E;AAGD,wBAAgB,aAAa,CAAC,QAAQ,EAAE,QAAQ,GAAG,MAAM,GAAG,IAAI,CAmB/D;AAGD,wBAAgB,2BAA2B,IAAI,MAAM,CA6CpD;AAGD,wBAAgB,yBAAyB,CAAC,MAAM,EAAE,MAAM,EAAE,GAAG,MAAM,EAAE,CAmBpE"}
--- a/dist/services/n8n-validation.js
+++ b/dist/services/n8n-validation.js
@@ -106,10 +106,15 @@ function cleanWorkflowForUpdate(workflow) {
                filteredSettings[key] = value;
            }
        }
-        cleanedWorkflow.settings = filteredSettings;
+        if (Object.keys(filteredSettings).length > 0) {
+            cleanedWorkflow.settings = filteredSettings;
+        }
+        else {
+            cleanedWorkflow.settings = { executionOrder: 'v1' };
+        }
    }
    else {
-        cleanedWorkflow.settings = {};
+        cleanedWorkflow.settings = { executionOrder: 'v1' };
    }
    return cleanedWorkflow;
 }
@@ -147,17 +152,23 @@ function validateWorkflowStructure(workflow) {
        }
        else if (connectionCount > 0 || executableNodes.length > 1) {
            const connectedNodes = new Set();
+            const ALL_CONNECTION_TYPES = ['main', 'error', 'ai_tool', 'ai_languageModel', 'ai_memory', 'ai_embedding', 'ai_vectorStore'];
            Object.entries(workflow.connections).forEach(([sourceName, connection]) => {
                connectedNodes.add(sourceName);
-                if (connection.main && Array.isArray(connection.main)) {
-                    connection.main.forEach((outputs) => {
-                        if (Array.isArray(outputs)) {
-                            outputs.forEach((target) => {
-                                connectedNodes.add(target.node);
-                            });
-                        }
-                    });
-                }
+                ALL_CONNECTION_TYPES.forEach(connType => {
+                    const connData = connection[connType];
+                    if (connData && Array.isArray(connData)) {
+                        connData.forEach((outputs) => {
+                            if (Array.isArray(outputs)) {
+                                outputs.forEach((target) => {
+                                    if (target?.node) {
+                                        connectedNodes.add(target.node);
+                                    }
+                                });
+                            }
+                        });
+                    }
+                });
            });
            const disconnectedNodes = workflow.nodes.filter(node => {
                if ((0, node_classification_1.isNonExecutableNode)(node.type)) {
@@ -166,7 +177,9 @@ function validateWorkflowStructure(workflow) {
                const isConnected = connectedNodes.has(node.name);
                const isNodeTrigger = (0, node_type_utils_1.isTriggerNode)(node.type);
                if (isNodeTrigger) {
-                    return !workflow.connections?.[node.name];
+                    const hasOutgoingConnections = !!workflow.connections?.[node.name];
+                    const hasInboundConnections = isConnected;
+                    return !hasOutgoingConnections && !hasInboundConnections;
                }
                return !isConnected;
            });
@@ -212,12 +225,9 @@ function validateWorkflowStructure(workflow) {
    }
    if (workflow.active === true && workflow.nodes && workflow.nodes.length > 0) {
        const activatableTriggers = workflow.nodes.filter(node => !node.disabled && (0, node_type_utils_1.isActivatableTrigger)(node.type));
-        const executeWorkflowTriggers = workflow.nodes.filter(node => !node.disabled && node.type.toLowerCase().includes('executeworkflow'));
-        if (activatableTriggers.length === 0 && executeWorkflowTriggers.length > 0) {
-            const triggerNames = executeWorkflowTriggers.map(n => n.name).join(', ');
-            errors.push(`Cannot activate workflow with only Execute Workflow Trigger nodes (${triggerNames}). ` +
-                'Execute Workflow Trigger can only be invoked by other workflows, not activated. ' +
-                'Either deactivate the workflow or add a webhook/schedule/polling trigger.');
+        if (activatableTriggers.length === 0) {
+            errors.push('Cannot activate workflow: No activatable trigger nodes found. ' +
+                'Workflows must have at least one enabled trigger node (webhook, schedule, executeWorkflowTrigger, etc.).');
        }
    }
    if (workflow.nodes && workflow.connections) {
--- a/dist/services/n8n-validation.js.map
+++ b/dist/services/n8n-validation.js.map
--- a/dist/services/n8n-version.d.ts.map
+++ b/dist/services/n8n-version.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"n8n-version.d.ts","sourceRoot":"","sources":["../../src/services/n8n-version.ts"],"names":[],"mappings":"AAoBA,OAAO,EAAE,cAAc,EAAuB,MAAM,kBAAkB,CAAC;AAkCvE,wBAAgB,YAAY,CAAC,aAAa,EAAE,MAAM,GAAG,cAAc,GAAG,IAAI,CAazE;AAKD,wBAAgB,eAAe,CAAC,CAAC,EAAE,cAAc,EAAE,CAAC,EAAE,cAAc,GAAG,MAAM,CAI5E;AAKD,wBAAgB,cAAc,CAAC,OAAO,EAAE,cAAc,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,SAAI,GAAG,OAAO,CAGxG;AAKD,wBAAgB,8BAA8B,CAAC,OAAO,EAAE,cAAc,GAAG,GAAG,CAAC,MAAM,CAAC,CAcnF;AASD,wBAAsB,eAAe,CAAC,OAAO,EAAE,MAAM,GAAG,OAAO,CAAC,cAAc,GAAG,IAAI,CAAC,CAgDrF;AAKD,wBAAgB,iBAAiB,IAAI,IAAI,CAExC;AAKD,wBAAgB,gBAAgB,CAAC,OAAO,EAAE,MAAM,GAAG,cAAc,GAAG,IAAI,CAEvE;AAKD,wBAAgB,gBAAgB,CAAC,OAAO,EAAE,MAAM,EAAE,OAAO,EAAE,cAAc,GAAG,IAAI,CAE/E;AAYD,wBAAgB,uBAAuB,CACrC,QAAQ,EAAE,MAAM,CAAC,MAAM,EAAE,OAAO,CAAC,GAAG,SAAS,EAC7C,OAAO,EAAE,cAAc,GAAG,IAAI,GAC7B,MAAM,CAAC,MAAM,EAAE,OAAO,CAAC,CAsBzB;AAGD,eAAO,MAAM,kBAAkB;;;;;;;;;;;CAG9B,CAAC"}
+{"version":3,"file":"n8n-version.d.ts","sourceRoot":"","sources":["../../src/services/n8n-version.ts"],"names":[],"mappings":"AAoBA,OAAO,EAAE,cAAc,EAAuB,MAAM,kBAAkB,CAAC;AA0CvE,wBAAgB,YAAY,CAAC,aAAa,EAAE,MAAM,GAAG,cAAc,GAAG,IAAI,CAczE;AAKD,wBAAgB,eAAe,CAAC,CAAC,EAAE,cAAc,EAAE,CAAC,EAAE,cAAc,GAAG,MAAM,CAI5E;AAKD,wBAAgB,cAAc,CAAC,OAAO,EAAE,cAAc,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,SAAI,GAAG,OAAO,CAGxG;AAKD,wBAAgB,8BAA8B,CAAC,OAAO,EAAE,cAAc,GAAG,GAAG,CAAC,MAAM,CAAC,CAcnF;AASD,wBAAsB,eAAe,CAAC,OAAO,EAAE,MAAM,GAAG,OAAO,CAAC,cAAc,GAAG,IAAI,CAAC,CAoDrF;AAKD,wBAAgB,iBAAiB,IAAI,IAAI,CAExC;AAKD,wBAAgB,gBAAgB,CAAC,OAAO,EAAE,MAAM,GAAG,cAAc,GAAG,IAAI,CAMvE;AAKD,wBAAgB,gBAAgB,CAAC,OAAO,EAAE,MAAM,EAAE,OAAO,EAAE,cAAc,GAAG,IAAI,CAE/E;AAYD,wBAAgB,uBAAuB,CACrC,QAAQ,EAAE,MAAM,CAAC,MAAM,EAAE,OAAO,CAAC,GAAG,SAAS,EAC7C,OAAO,EAAE,cAAc,GAAG,IAAI,GAC7B,MAAM,CAAC,MAAM,EAAE,OAAO,CAAC,CAsBzB;AAGD,eAAO,MAAM,kBAAkB;;;;;;;;;;;CAG9B,CAAC"}
--- a/dist/services/n8n-version.js
+++ b/dist/services/n8n-version.js
@@ -15,6 +15,7 @@ exports.setCachedVersion = setCachedVersion;
 exports.cleanSettingsForVersion = cleanSettingsForVersion;
 const axios_1 = __importDefault(require("axios"));
 const logger_1 = require("../utils/logger");
+const VERSION_CACHE_TTL_MS = 5 * 60 * 1000;
 const versionCache = new Map();
 const SETTINGS_BY_VERSION = {
    core: [
@@ -37,7 +38,7 @@ const SETTINGS_BY_VERSION = {
    ],
 };
 function parseVersion(versionString) {
-    const match = versionString.match(/^(\d+)\.(\d+)\.(\d+)/);
+    const match = versionString.match(/^v?(\d+)\.(\d+)\.(\d+)/);
    if (!match) {
        return null;
    }
@@ -71,9 +72,9 @@ function getSupportedSettingsProperties(version) {
 }
 async function fetchN8nVersion(baseUrl) {
    const cached = versionCache.get(baseUrl);
-    if (cached) {
-        logger_1.logger.debug(`Using cached n8n version for ${baseUrl}: ${cached.version}`);
-        return cached;
+    if (cached && Date.now() - cached.fetchedAt < VERSION_CACHE_TTL_MS) {
+        logger_1.logger.debug(`Using cached n8n version for ${baseUrl}: ${cached.info.version}`);
+        return cached.info;
    }
    try {
        const cleanBaseUrl = baseUrl.replace(/\/api\/v\d+\/?$/, '').replace(/\/$/, '');
@@ -89,11 +90,15 @@ async function fetchN8nVersion(baseUrl) {
                logger_1.logger.warn('No data in settings response');
                return null;
            }
-            const versionString = settings.n8nVersion || settings.versionCli;
+            const versionString = typeof settings.n8nVersion === 'string'
+                ? settings.n8nVersion
+                : typeof settings.versionCli === 'string'
+                    ? settings.versionCli
+                    : null;
            if (versionString) {
                const versionInfo = parseVersion(versionString);
                if (versionInfo) {
-                    versionCache.set(baseUrl, versionInfo);
+                    versionCache.set(baseUrl, { info: versionInfo, fetchedAt: Date.now() });
                    logger_1.logger.debug(`Detected n8n version: ${versionInfo.version}`);
                    return versionInfo;
                }
@@ -111,10 +116,14 @@ function clearVersionCache() {
    versionCache.clear();
 }
 function getCachedVersion(baseUrl) {
-    return versionCache.get(baseUrl) || null;
+    const cached = versionCache.get(baseUrl);
+    if (cached && Date.now() - cached.fetchedAt < VERSION_CACHE_TTL_MS) {
+        return cached.info;
+    }
+    return null;
 }
 function setCachedVersion(baseUrl, version) {
-    versionCache.set(baseUrl, version);
+    versionCache.set(baseUrl, { info: version, fetchedAt: Date.now() });
 }
 function cleanSettingsForVersion(settings, version) {
    if (!settings || typeof settings !== 'object') {
--- a/dist/services/n8n-version.js.map
+++ b/dist/services/n8n-version.js.map
@@ -1 +1 @@
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--- a/dist/services/node-similarity-service.d.ts.map
+++ b/dist/services/node-similarity-service.d.ts.map
@@ -1 +1 @@
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+{"version":3,"file":"node-similarity-service.d.ts","sourceRoot":"","sources":["../../src/services/node-similarity-service.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,cAAc,EAAE,MAAM,6BAA6B,CAAC;AAI7D,MAAM,WAAW,cAAc;IAC7B,QAAQ,EAAE,MAAM,CAAC;IACjB,WAAW,EAAE,MAAM,CAAC;IACpB,UAAU,EAAE,MAAM,CAAC;IACnB,MAAM,EAAE,MAAM,CAAC;IACf,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,WAAW,CAAC,EAAE,MAAM,CAAC;CACtB;AAED,MAAM,WAAW,eAAe;IAC9B,cAAc,EAAE,MAAM,CAAC;IACvB,aAAa,EAAE,MAAM,CAAC;IACtB,YAAY,EAAE,MAAM,CAAC;IACrB,YAAY,EAAE,MAAM,CAAC;IACrB,UAAU,EAAE,MAAM,CAAC;CACpB;AAED,MAAM,WAAW,oBAAoB;IACnC,OAAO,EAAE,MAAM,CAAC;IAChB,UAAU,EAAE,MAAM,CAAC;IACnB,UAAU,EAAE,MAAM,CAAC;IACnB,MAAM,EAAE,MAAM,CAAC;CAChB;AAED,qBAAa,qBAAqB;IAEhC,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,iBAAiB,CAAM;IAC/C,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,kBAAkB,CAAK;IAC/C,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,mBAAmB,CAAK;IAChD,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,iBAAiB,CAAiB;IAC1D,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,mBAAmB,CAAO;IAElD,OAAO,CAAC,UAAU,CAAiB;IACnC,OAAO,CAAC,cAAc,CAAsC;IAC5D,OAAO,CAAC,SAAS,CAAsB;IACvC,OAAO,CAAC,WAAW,CAAa;IAChC,OAAO,CAAC,YAAY,CAAa;gBAErB,UAAU,EAAE,cAAc;IAStC,OAAO,CAAC,wBAAwB;IAkDhC,OAAO,CAAC,yBAAyB;IAuB3B,gBAAgB,CAAC,WAAW,EAAE,MAAM,EAAE,KAAK,GAAE,MAAU,GAAG,OAAO,CAAC,cAAc,EAAE,CAAC;IAiEzF,OAAO,CAAC,mBAAmB;IA0E3B,OAAO,CAAC,wBAAwB;IAuEhC,OAAO,CAAC,gBAAgB;IA2BxB,OAAO,CAAC,iBAAiB;IAUzB,OAAO,CAAC,mBAAmB;IAgB3B,OAAO,CAAC,eAAe;YAgDT,cAAc;IAqCrB,eAAe,IAAI,IAAI;IAUjB,YAAY,IAAI,OAAO,CAAC,IAAI,CAAC;IAQ1C,uBAAuB,CAAC,WAAW,EAAE,cAAc,EAAE,EAAE,WAAW,EAAE,MAAM,GAAG,MAAM;IA8BnF,aAAa,CAAC,UAAU,EAAE,cAAc,GAAG,OAAO;IAQlD,UAAU,IAAI,IAAI;CAGnB"}
--- a/dist/services/node-similarity-service.js
+++ b/dist/services/node-similarity-service.js
@@ -2,6 +2,7 @@
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.NodeSimilarityService = void 0;
 const logger_1 = require("../utils/logger");
+const tool_variant_generator_1 = require("./tool-variant-generator");
 class NodeSimilarityService {
    constructor(repository) {
        this.nodeCache = null;
@@ -67,6 +68,22 @@ class NodeSimilarityService {
        if (!invalidType || invalidType.trim() === '') {
            return [];
        }
+        if (tool_variant_generator_1.ToolVariantGenerator.isToolVariantNodeType(invalidType)) {
+            const baseNodeType = tool_variant_generator_1.ToolVariantGenerator.getBaseNodeType(invalidType);
+            if (baseNodeType) {
+                const baseNode = this.repository.getNode(baseNodeType);
+                if (baseNode) {
+                    return [{
+                            nodeType: invalidType,
+                            displayName: `${baseNode.displayName} Tool`,
+                            confidence: 0.98,
+                            reason: `Dynamic AI Tool variant of ${baseNode.displayName}`,
+                            category: baseNode.category,
+                            description: 'Runtime-generated Tool variant for AI Agent integration'
+                        }];
+                }
+            }
+        }
        const suggestions = [];
        const mistakeSuggestion = this.checkCommonMistakes(invalidType);
        if (mistakeSuggestion) {
--- a/dist/services/node-similarity-service.js.map
+++ b/dist/services/node-similarity-service.js.map
--- a/dist/services/workflow-auto-fixer.d.ts
+++ b/dist/services/workflow-auto-fixer.d.ts
@@ -5,7 +5,7 @@ import { WorkflowDiffOperation } from '../types/workflow-diff';
 import { Workflow } from '../types/n8n-api';
 import { PostUpdateGuidance } from './post-update-validator';
 export type FixConfidenceLevel = 'high' | 'medium' | 'low';
-export type FixType = 'expression-format' | 'typeversion-correction' | 'error-output-config' | 'node-type-correction' | 'webhook-missing-path' | 'typeversion-upgrade' | 'version-migration';
+export type FixType = 'expression-format' | 'typeversion-correction' | 'error-output-config' | 'node-type-correction' | 'webhook-missing-path' | 'typeversion-upgrade' | 'version-migration' | 'tool-variant-correction';
 export interface AutoFixConfig {
    applyFixes: boolean;
    fixTypes?: FixType[];
@@ -62,6 +62,7 @@ export declare class WorkflowAutoFixer {
    private processErrorOutputFixes;
    private processNodeTypeFixes;
    private processWebhookPathFixes;
+    private processToolVariantFixes;
    private setNestedValue;
    private filterByConfidence;
    private filterOperationsByFixes;
--- a/dist/services/workflow-auto-fixer.d.ts.map
+++ b/dist/services/workflow-auto-fixer.d.ts.map
@@ -1 +1 @@
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+{"version":3,"file":"workflow-auto-fixer.d.ts","sourceRoot":"","sources":["../../src/services/workflow-auto-fixer.ts"],"names":[],"mappings":"AAQA,OAAO,EAAE,wBAAwB,EAAE,MAAM,sBAAsB,CAAC;AAChE,OAAO,EAAE,qBAAqB,EAAE,MAAM,+BAA+B,CAAC;AAEtE,OAAO,EAAE,cAAc,EAAE,MAAM,6BAA6B,CAAC;AAC7D,OAAO,EACL,qBAAqB,EAEtB,MAAM,wBAAwB,CAAC;AAChC,OAAO,EAAgB,QAAQ,EAAE,MAAM,kBAAkB,CAAC;AAK1D,OAAO,EAAuB,kBAAkB,EAAE,MAAM,yBAAyB,CAAC;AAIlF,MAAM,MAAM,kBAAkB,GAAG,MAAM,GAAG,QAAQ,GAAG,KAAK,CAAC;AAC3D,MAAM,MAAM,OAAO,GACf,mBAAmB,GACnB,wBAAwB,GACxB,qBAAqB,GACrB,sBAAsB,GACtB,sBAAsB,GACtB,qBAAqB,GACrB,mBAAmB,GACnB,yBAAyB,CAAC;AAE9B,MAAM,WAAW,aAAa;IAC5B,UAAU,EAAE,OAAO,CAAC;IACpB,QAAQ,CAAC,EAAE,OAAO,EAAE,CAAC;IACrB,mBAAmB,CAAC,EAAE,kBAAkB,CAAC;IACzC,QAAQ,CAAC,EAAE,MAAM,CAAC;CACnB;AAED,MAAM,WAAW,YAAY;IAC3B,IAAI,EAAE,MAAM,CAAC;IACb,KAAK,EAAE,MAAM,CAAC;IACd,IAAI,EAAE,OAAO,CAAC;IACd,MAAM,EAAE,GAAG,CAAC;IACZ,KAAK,EAAE,GAAG,CAAC;IACX,UAAU,EAAE,kBAAkB,CAAC;IAC/B,WAAW,EAAE,MAAM,CAAC;CACrB;AAED,MAAM,WAAW,aAAa;IAC5B,UAAU,EAAE,qBAAqB,EAAE,CAAC;IACpC,KAAK,EAAE,YAAY,EAAE,CAAC;IACtB,OAAO,EAAE,MAAM,CAAC;IAChB,KAAK,EAAE;QACL,KAAK,EAAE,MAAM,CAAC;QACd,MAAM,EAAE,MAAM,CAAC,OAAO,EAAE,MAAM,CAAC,CAAC;QAChC,YAAY,EAAE,MAAM,CAAC,kBAAkB,EAAE,MAAM,CAAC,CAAC;KAClD,CAAC;IACF,kBAAkB,CAAC,EAAE,kBAAkB,EAAE,CAAC;CAC3C;AAED,MAAM,WAAW,eAAgB,SAAQ,qBAAqB;IAC5D,QAAQ,EAAE,MAAM,CAAC;IACjB,MAAM,EAAE,MAAM,CAAC;CAChB;AAKD,wBAAgB,iBAAiB,CAAC,KAAK,EAAE,qBAAqB,GAAG,KAAK,IAAI,eAAe,CAIxF;AAKD,MAAM,WAAW,aAAa;IAC5B,IAAI,EAAE,OAAO,CAAC;IACd,MAAM,CAAC,EAAE,MAAM,CAAC;IAChB,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,OAAO,EAAE,MAAM,CAAC;IAChB,WAAW,CAAC,EAAE,KAAK,CAAC;QAClB,QAAQ,EAAE,MAAM,CAAC;QACjB,UAAU,EAAE,MAAM,CAAC;QACnB,MAAM,EAAE,MAAM,CAAC;KAChB,CAAC,CAAC;CACJ;AAED,qBAAa,iBAAiB;IAC5B,OAAO,CAAC,QAAQ,CAAC,aAAa,CAI5B;IACF,OAAO,CAAC,iBAAiB,CAAsC;IAC/D,OAAO,CAAC,cAAc,CAAmC;IACzD,OAAO,CAAC,sBAAsB,CAAuC;IACrE,OAAO,CAAC,gBAAgB,CAAqC;IAC7D,OAAO,CAAC,mBAAmB,CAAoC;gBAEnD,UAAU,CAAC,EAAE,cAAc;IAajC,aAAa,CACjB,QAAQ,EAAE,QAAQ,EAClB,gBAAgB,EAAE,wBAAwB,EAC1C,YAAY,GAAE,qBAAqB,EAAO,EAC1C,MAAM,GAAE,OAAO,CAAC,aAAa,CAAM,GAClC,OAAO,CAAC,aAAa,CAAC;IA6EzB,OAAO,CAAC,4BAA4B;IAqEpC,OAAO,CAAC,uBAAuB;IA8C/B,OAAO,CAAC,uBAAuB;IA0C/B,OAAO,CAAC,oBAAoB;IAkD5B,OAAO,CAAC,uBAAuB;IAwE/B,OAAO,CAAC,uBAAuB;IAsD/B,OAAO,CAAC,cAAc;IAmGtB,OAAO,CAAC,kBAAkB;IAkB1B,OAAO,CAAC,uBAAuB;IAiB/B,OAAO,CAAC,cAAc;IA+BtB,OAAO,CAAC,eAAe;YA4CT,0BAA0B;YAmF1B,4BAA4B;CAiF3C"}
--- a/dist/services/workflow-auto-fixer.js
+++ b/dist/services/workflow-auto-fixer.js
@@ -63,6 +63,9 @@ class WorkflowAutoFixer {
        if (!fullConfig.fixTypes || fullConfig.fixTypes.includes('webhook-missing-path')) {
            this.processWebhookPathFixes(validationResult, nodeMap, operations, fixes);
        }
+        if (!fullConfig.fixTypes || fullConfig.fixTypes.includes('tool-variant-correction')) {
+            this.processToolVariantFixes(validationResult, nodeMap, workflow, operations, fixes);
+        }
        if (!fullConfig.fixTypes || fullConfig.fixTypes.includes('typeversion-upgrade')) {
            await this.processVersionUpgradeFixes(workflow, nodeMap, operations, fixes, postUpdateGuidance);
        }
@@ -267,6 +270,41 @@ class WorkflowAutoFixer {
            }
        }
    }
+    processToolVariantFixes(validationResult, nodeMap, _workflow, operations, fixes) {
+        for (const error of validationResult.errors) {
+            if (error.code !== 'WRONG_NODE_TYPE_FOR_AI_TOOL' || !error.fix) {
+                continue;
+            }
+            const fix = error.fix;
+            if (fix.type !== 'tool-variant-correction') {
+                continue;
+            }
+            const nodeName = error.nodeName || error.nodeId;
+            if (!nodeName)
+                continue;
+            const node = nodeMap.get(nodeName);
+            if (!node)
+                continue;
+            fixes.push({
+                node: nodeName,
+                field: 'type',
+                type: 'tool-variant-correction',
+                before: fix.currentType,
+                after: fix.suggestedType,
+                confidence: 'high',
+                description: fix.description || `Replace "${fix.currentType}" with Tool variant "${fix.suggestedType}"`
+            });
+            const operation = {
+                type: 'updateNode',
+                nodeId: nodeName,
+                updates: {
+                    type: fix.suggestedType
+                }
+            };
+            operations.push(operation);
+            logger.info(`Generated tool variant correction for ${nodeName}: ${fix.currentType} → ${fix.suggestedType}`);
+        }
+    }
    setNestedValue(obj, path, value) {
        if (!obj || typeof obj !== 'object') {
            throw new Error('Cannot set value on non-object');
@@ -372,7 +410,8 @@ class WorkflowAutoFixer {
                'node-type-correction': 0,
                'webhook-missing-path': 0,
                'typeversion-upgrade': 0,
-                'version-migration': 0
+                'version-migration': 0,
+                'tool-variant-correction': 0
            },
            byConfidence: {
                'high': 0,
@@ -412,6 +451,9 @@ class WorkflowAutoFixer {
        if (stats.byType['version-migration'] > 0) {
            parts.push(`${stats.byType['version-migration']} version ${stats.byType['version-migration'] === 1 ? 'migration' : 'migrations'}`);
        }
+        if (stats.byType['tool-variant-correction'] > 0) {
+            parts.push(`${stats.byType['tool-variant-correction']} tool variant ${stats.byType['tool-variant-correction'] === 1 ? 'correction' : 'corrections'}`);
+        }
        if (parts.length === 0) {
            return `Fixed ${stats.total} ${stats.total === 1 ? 'issue' : 'issues'}`;
        }
--- a/dist/services/workflow-auto-fixer.js.map
+++ b/dist/services/workflow-auto-fixer.js.map
--- a/dist/services/workflow-diff-engine.js
+++ b/dist/services/workflow-diff-engine.js
@@ -651,7 +651,7 @@ class WorkflowDiffEngine {
    validateActivateWorkflow(workflow, operation) {
        const activatableTriggers = workflow.nodes.filter(node => !node.disabled && (0, node_type_utils_1.isActivatableTrigger)(node.type));
        if (activatableTriggers.length === 0) {
-            return 'Cannot activate workflow: No activatable trigger nodes found. Workflows must have at least one enabled trigger node (webhook, schedule, email, etc.). Note: executeWorkflowTrigger cannot activate workflows as they can only be invoked by other workflows.';
+            return 'Cannot activate workflow: No activatable trigger nodes found. Workflows must have at least one enabled trigger node (webhook, schedule, executeWorkflowTrigger, etc.).';
        }
        return null;
    }
--- a/dist/services/workflow-diff-engine.js.map
+++ b/dist/services/workflow-diff-engine.js.map
--- a/dist/services/workflow-validator.d.ts
+++ b/dist/services/workflow-validator.d.ts
@@ -47,12 +47,19 @@ interface WorkflowJson {
    pinData?: any;
    meta?: any;
 }
-interface ValidationIssue {
+export interface ValidationIssue {
    type: 'error' | 'warning';
    nodeId?: string;
    nodeName?: string;
    message: string;
    details?: any;
+    code?: string;
+    fix?: {
+        type: string;
+        currentType?: string;
+        suggestedType?: string;
+        description?: string;
+    };
 }
 export interface WorkflowValidationResult {
    valid: boolean;
@@ -86,6 +93,7 @@ export declare class WorkflowValidator {
    private validateConnectionOutputs;
    private validateErrorOutputConfiguration;
    private validateAIToolConnection;
+    private validateAIToolSource;
    private hasCycle;
    private validateExpressions;
    private countExpressionsInObject;
--- a/dist/services/workflow-validator.d.ts.map
+++ b/dist/services/workflow-validator.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"workflow-validator.d.ts","sourceRoot":"","sources":["../../src/services/workflow-validator.ts"],"names":[],"mappings":"AAMA,OAAO,EAAE,cAAc,EAAE,MAAM,6BAA6B,CAAC;AAC7D,OAAO,EAAE,uBAAuB,EAAE,MAAM,6BAA6B,CAAC;AAWtE,UAAU,YAAY;IACpB,EAAE,EAAE,MAAM,CAAC;IACX,IAAI,EAAE,MAAM,CAAC;IACb,IAAI,EAAE,MAAM,CAAC;IACb,QAAQ,EAAE,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;IAC3B,UAAU,EAAE,GAAG,CAAC;IAChB,WAAW,CAAC,EAAE,GAAG,CAAC;IAClB,QAAQ,CAAC,EAAE,OAAO,CAAC;IACnB,KAAK,CAAC,EAAE,MAAM,CAAC;IACf,WAAW,CAAC,EAAE,OAAO,CAAC;IACtB,WAAW,CAAC,EAAE,MAAM,CAAC;IACrB,cAAc,CAAC,EAAE,OAAO,CAAC;IACzB,OAAO,CAAC,EAAE,uBAAuB,GAAG,qBAAqB,GAAG,cAAc,CAAC;IAC3E,WAAW,CAAC,EAAE,OAAO,CAAC;IACtB,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,gBAAgB,CAAC,EAAE,MAAM,CAAC;IAC1B,gBAAgB,CAAC,EAAE,OAAO,CAAC;IAC3B,WAAW,CAAC,EAAE,OAAO,CAAC;CACvB;AAED,UAAU,kBAAkB;IAC1B,CAAC,UAAU,EAAE,MAAM,GAAG;QACpB,IAAI,CAAC,EAAE,KAAK,CAAC,KAAK,CAAC;YAAE,IAAI,EAAE,MAAM,CAAC;YAAC,IAAI,EAAE,MAAM,CAAC;YAAC,KAAK,EAAE,MAAM,CAAA;SAAE,CAAC,CAAC,CAAC;QACnE,KAAK,CAAC,EAAE,KAAK,CAAC,KAAK,CAAC;YAAE,IAAI,EAAE,MAAM,CAAC;YAAC,IAAI,EAAE,MAAM,CAAC;YAAC,KAAK,EAAE,MAAM,CAAA;SAAE,CAAC,CAAC,CAAC;QACpE,OAAO,CAAC,EAAE,KAAK,CAAC,KAAK,CAAC;YAAE,IAAI,EAAE,MAAM,CAAC;YAAC,IAAI,EAAE,MAAM,CAAC;YAAC,KAAK,EAAE,MAAM,CAAA;SAAE,CAAC,CAAC,CAAC;KACvE,CAAC;CACH;AAED,UAAU,YAAY;IACpB,IAAI,CAAC,EAAE,MAAM,CAAC;IACd,KAAK,EAAE,YAAY,EAAE,CAAC;IACtB,WAAW,EAAE,kBAAkB,CAAC;IAChC,QAAQ,CAAC,EAAE,GAAG,CAAC;IACf,UAAU,CAAC,EAAE,GAAG,CAAC;IACjB,OAAO,CAAC,EAAE,GAAG,CAAC;IACd,IAAI,CAAC,EAAE,GAAG,CAAC;CACZ;AAED,UAAU,eAAe;IACvB,IAAI,EAAE,OAAO,GAAG,SAAS,CAAC;IAC1B,MAAM,CAAC,EAAE,MAAM,CAAC;IAChB,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,OAAO,EAAE,MAAM,CAAC;IAChB,OAAO,CAAC,EAAE,GAAG,CAAC;CACf;AAED,MAAM,WAAW,wBAAwB;IACvC,KAAK,EAAE,OAAO,CAAC;IACf,MAAM,EAAE,eAAe,EAAE,CAAC;IAC1B,QAAQ,EAAE,eAAe,EAAE,CAAC;IAC5B,UAAU,EAAE;QACV,UAAU,EAAE,MAAM,CAAC;QACnB,YAAY,EAAE,MAAM,CAAC;QACrB,YAAY,EAAE,MAAM,CAAC;QACrB,gBAAgB,EAAE,MAAM,CAAC;QACzB,kBAAkB,EAAE,MAAM,CAAC;QAC3B,oBAAoB,EAAE,MAAM,CAAC;KAC9B,CAAC;IACF,WAAW,EAAE,MAAM,EAAE,CAAC;CACvB;AAED,qBAAa,iBAAiB;IAK1B,OAAO,CAAC,cAAc;IACtB,OAAO,CAAC,aAAa;IALvB,OAAO,CAAC,eAAe,CAA6B;IACpD,OAAO,CAAC,iBAAiB,CAAwB;gBAGvC,cAAc,EAAE,cAAc,EAC9B,aAAa,EAAE,OAAO,uBAAuB;IAWjD,gBAAgB,CACpB,QAAQ,EAAE,YAAY,EACtB,OAAO,GAAE;QACP,aAAa,CAAC,EAAE,OAAO,CAAC;QACxB,mBAAmB,CAAC,EAAE,OAAO,CAAC;QAC9B,mBAAmB,CAAC,EAAE,OAAO,CAAC;QAC9B,OAAO,CAAC,EAAE,SAAS,GAAG,SAAS,GAAG,aAAa,GAAG,QAAQ,CAAC;KACvD,GACL,OAAO,CAAC,wBAAwB,CAAC;IAgHpC,OAAO,CAAC,yBAAyB;YAkInB,gBAAgB;IAuL9B,OAAO,CAAC,mBAAmB;IA2H3B,OAAO,CAAC,yBAAyB;IAgGjC,OAAO,CAAC,gCAAgC;IAoFxC,OAAO,CAAC,wBAAwB;IAgChC,OAAO,CAAC,QAAQ;IAsFhB,OAAO,CAAC,mBAAmB;IA4F3B,OAAO,CAAC,wBAAwB;IA2BhC,OAAO,CAAC,YAAY;IAgBpB,OAAO,CAAC,qBAAqB;IAgG7B,OAAO,CAAC,qBAAqB;IA8C7B,OAAO,CAAC,mBAAmB;IA4E3B,OAAO,CAAC,sBAAsB;IAyT9B,OAAO,CAAC,yBAAyB;IAqCjC,OAAO,CAAC,gCAAgC;IA8BxC,OAAO,CAAC,gCAAgC;IAsFxC,OAAO,CAAC,gBAAgB;IA4CxB,OAAO,CAAC,2BAA2B;CAmEpC"}
+{"version":3,"file":"workflow-validator.d.ts","sourceRoot":"","sources":["../../src/services/workflow-validator.ts"],"names":[],"mappings":"AAMA,OAAO,EAAE,cAAc,EAAE,MAAM,6BAA6B,CAAC;AAC7D,OAAO,EAAE,uBAAuB,EAAE,MAAM,6BAA6B,CAAC;AAatE,UAAU,YAAY;IACpB,EAAE,EAAE,MAAM,CAAC;IACX,IAAI,EAAE,MAAM,CAAC;IACb,IAAI,EAAE,MAAM,CAAC;IACb,QAAQ,EAAE,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;IAC3B,UAAU,EAAE,GAAG,CAAC;IAChB,WAAW,CAAC,EAAE,GAAG,CAAC;IAClB,QAAQ,CAAC,EAAE,OAAO,CAAC;IACnB,KAAK,CAAC,EAAE,MAAM,CAAC;IACf,WAAW,CAAC,EAAE,OAAO,CAAC;IACtB,WAAW,CAAC,EAAE,MAAM,CAAC;IACrB,cAAc,CAAC,EAAE,OAAO,CAAC;IACzB,OAAO,CAAC,EAAE,uBAAuB,GAAG,qBAAqB,GAAG,cAAc,CAAC;IAC3E,WAAW,CAAC,EAAE,OAAO,CAAC;IACtB,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,gBAAgB,CAAC,EAAE,MAAM,CAAC;IAC1B,gBAAgB,CAAC,EAAE,OAAO,CAAC;IAC3B,WAAW,CAAC,EAAE,OAAO,CAAC;CACvB;AAED,UAAU,kBAAkB;IAC1B,CAAC,UAAU,EAAE,MAAM,GAAG;QACpB,IAAI,CAAC,EAAE,KAAK,CAAC,KAAK,CAAC;YAAE,IAAI,EAAE,MAAM,CAAC;YAAC,IAAI,EAAE,MAAM,CAAC;YAAC,KAAK,EAAE,MAAM,CAAA;SAAE,CAAC,CAAC,CAAC;QACnE,KAAK,CAAC,EAAE,KAAK,CAAC,KAAK,CAAC;YAAE,IAAI,EAAE,MAAM,CAAC;YAAC,IAAI,EAAE,MAAM,CAAC;YAAC,KAAK,EAAE,MAAM,CAAA;SAAE,CAAC,CAAC,CAAC;QACpE,OAAO,CAAC,EAAE,KAAK,CAAC,KAAK,CAAC;YAAE,IAAI,EAAE,MAAM,CAAC;YAAC,IAAI,EAAE,MAAM,CAAC;YAAC,KAAK,EAAE,MAAM,CAAA;SAAE,CAAC,CAAC,CAAC;KACvE,CAAC;CACH;AAED,UAAU,YAAY;IACpB,IAAI,CAAC,EAAE,MAAM,CAAC;IACd,KAAK,EAAE,YAAY,EAAE,CAAC;IACtB,WAAW,EAAE,kBAAkB,CAAC;IAChC,QAAQ,CAAC,EAAE,GAAG,CAAC;IACf,UAAU,CAAC,EAAE,GAAG,CAAC;IACjB,OAAO,CAAC,EAAE,GAAG,CAAC;IACd,IAAI,CAAC,EAAE,GAAG,CAAC;CACZ;AAED,MAAM,WAAW,eAAe;IAC9B,IAAI,EAAE,OAAO,GAAG,SAAS,CAAC;IAC1B,MAAM,CAAC,EAAE,MAAM,CAAC;IAChB,QAAQ,CAAC,EAAE,MAAM,CAAC;IAClB,OAAO,EAAE,MAAM,CAAC;IAChB,OAAO,CAAC,EAAE,GAAG,CAAC;IACd,IAAI,CAAC,EAAE,MAAM,CAAC;IACd,GAAG,CAAC,EAAE;QACJ,IAAI,EAAE,MAAM,CAAC;QACb,WAAW,CAAC,EAAE,MAAM,CAAC;QACrB,aAAa,CAAC,EAAE,MAAM,CAAC;QACvB,WAAW,CAAC,EAAE,MAAM,CAAC;KACtB,CAAC;CACH;AAED,MAAM,WAAW,wBAAwB;IACvC,KAAK,EAAE,OAAO,CAAC;IACf,MAAM,EAAE,eAAe,EAAE,CAAC;IAC1B,QAAQ,EAAE,eAAe,EAAE,CAAC;IAC5B,UAAU,EAAE;QACV,UAAU,EAAE,MAAM,CAAC;QACnB,YAAY,EAAE,MAAM,CAAC;QACrB,YAAY,EAAE,MAAM,CAAC;QACrB,gBAAgB,EAAE,MAAM,CAAC;QACzB,kBAAkB,EAAE,MAAM,CAAC;QAC3B,oBAAoB,EAAE,MAAM,CAAC;KAC9B,CAAC;IACF,WAAW,EAAE,MAAM,EAAE,CAAC;CACvB;AAED,qBAAa,iBAAiB;IAK1B,OAAO,CAAC,cAAc;IACtB,OAAO,CAAC,aAAa;IALvB,OAAO,CAAC,eAAe,CAA6B;IACpD,OAAO,CAAC,iBAAiB,CAAwB;gBAGvC,cAAc,EAAE,cAAc,EAC9B,aAAa,EAAE,OAAO,uBAAuB;IAWjD,gBAAgB,CACpB,QAAQ,EAAE,YAAY,EACtB,OAAO,GAAE;QACP,aAAa,CAAC,EAAE,OAAO,CAAC;QACxB,mBAAmB,CAAC,EAAE,OAAO,CAAC;QAC9B,mBAAmB,CAAC,EAAE,OAAO,CAAC;QAC9B,OAAO,CAAC,EAAE,SAAS,GAAG,SAAS,GAAG,aAAa,GAAG,QAAQ,CAAC;KACvD,GACL,OAAO,CAAC,wBAAwB,CAAC;IAgHpC,OAAO,CAAC,yBAAyB;YAkInB,gBAAgB;IAmO9B,OAAO,CAAC,mBAAmB;IA8H3B,OAAO,CAAC,yBAAyB;IAgGjC,OAAO,CAAC,gCAAgC;IAoFxC,OAAO,CAAC,wBAAwB;IAsChC,OAAO,CAAC,oBAAoB;IAuE5B,OAAO,CAAC,QAAQ;IAsFhB,OAAO,CAAC,mBAAmB;IA4F3B,OAAO,CAAC,wBAAwB;IA2BhC,OAAO,CAAC,YAAY;IAgBpB,OAAO,CAAC,qBAAqB;IAgG7B,OAAO,CAAC,qBAAqB;IA8C7B,OAAO,CAAC,mBAAmB;IA4E3B,OAAO,CAAC,sBAAsB;IAyT9B,OAAO,CAAC,yBAAyB;IAqCjC,OAAO,CAAC,gCAAgC;IA8BxC,OAAO,CAAC,gCAAgC;IAsFxC,OAAO,CAAC,gBAAgB;IA4CxB,OAAO,CAAC,2BAA2B;CAmEpC"}
--- a/dist/services/workflow-validator.js
+++ b/dist/services/workflow-validator.js
@@ -11,8 +11,10 @@ const node_similarity_service_1 = require("./node-similarity-service");
 const node_type_normalizer_1 = require("../utils/node-type-normalizer");
 const logger_1 = require("../utils/logger");
 const ai_node_validator_1 = require("./ai-node-validator");
+const ai_tool_validators_1 = require("./ai-tool-validators");
 const node_type_utils_1 = require("../utils/node-type-utils");
 const node_classification_1 = require("../utils/node-classification");
+const tool_variant_generator_1 = require("./tool-variant-generator");
 const logger = new logger_1.Logger({ prefix: '[WorkflowValidator]' });
 class WorkflowValidator {
    constructor(nodeRepository, nodeValidator) {
@@ -234,7 +236,31 @@ class WorkflowValidator {
                    }
                }
                const normalizedType = node_type_normalizer_1.NodeTypeNormalizer.normalizeToFullForm(node.type);
-                const nodeInfo = this.nodeRepository.getNode(normalizedType);
+                let nodeInfo = this.nodeRepository.getNode(normalizedType);
+                if (!nodeInfo && tool_variant_generator_1.ToolVariantGenerator.isToolVariantNodeType(normalizedType)) {
+                    const baseNodeType = tool_variant_generator_1.ToolVariantGenerator.getBaseNodeType(normalizedType);
+                    if (baseNodeType) {
+                        const baseNodeInfo = this.nodeRepository.getNode(baseNodeType);
+                        if (baseNodeInfo) {
+                            result.warnings.push({
+                                type: 'warning',
+                                nodeId: node.id,
+                                nodeName: node.name,
+                                message: `Node type "${node.type}" is inferred as a dynamic AI Tool variant of "${baseNodeType}". ` +
+                                    `This Tool variant is created by n8n at runtime when connecting "${baseNodeInfo.displayName}" to an AI Agent.`,
+                                code: 'INFERRED_TOOL_VARIANT'
+                            });
+                            nodeInfo = {
+                                ...baseNodeInfo,
+                                nodeType: normalizedType,
+                                displayName: `${baseNodeInfo.displayName} Tool`,
+                                isToolVariant: true,
+                                toolVariantOf: baseNodeType,
+                                isInferred: true
+                            };
+                        }
+                    }
+                }
                if (!nodeInfo) {
                    const suggestions = await this.similarityService.findSimilarNodes(node.type, 3);
                    let message = `Unknown node type: "${node.type}".`;
@@ -308,7 +334,14 @@ class WorkflowValidator {
                if (normalizedType.startsWith('nodes-langchain.')) {
                    continue;
                }
-                const nodeValidation = this.nodeValidator.validateWithMode(node.type, node.parameters, nodeInfo.properties || [], 'operation', profile);
+                if (nodeInfo.isInferred) {
+                    continue;
+                }
+                const paramsWithVersion = {
+                    '@version': node.typeVersion || 1,
+                    ...node.parameters
+                };
+                const nodeValidation = this.nodeValidator.validateWithMode(node.type, paramsWithVersion, nodeInfo.properties || [], 'operation', profile);
                nodeValidation.errors.forEach((error) => {
                    result.errors.push({
                        type: 'error',
@@ -367,6 +400,7 @@ class WorkflowValidator {
                this.validateConnectionOutputs(sourceName, outputs.error, nodeMap, nodeIdMap, result, 'error');
            }
            if (outputs.ai_tool) {
+                this.validateAIToolSource(sourceNode, result);
                this.validateConnectionOutputs(sourceName, outputs.ai_tool, nodeMap, nodeIdMap, result, 'ai_tool');
            }
        }
@@ -555,6 +589,51 @@ class WorkflowValidator {
            });
        }
    }
+    validateAIToolSource(sourceNode, result) {
+        const normalizedType = node_type_normalizer_1.NodeTypeNormalizer.normalizeToFullForm(sourceNode.type);
+        if ((0, ai_tool_validators_1.isAIToolSubNode)(normalizedType)) {
+            return;
+        }
+        const nodeInfo = this.nodeRepository.getNode(normalizedType);
+        if (tool_variant_generator_1.ToolVariantGenerator.isToolVariantNodeType(normalizedType)) {
+            if (nodeInfo?.isToolVariant) {
+                return;
+            }
+        }
+        if (!nodeInfo) {
+            return;
+        }
+        if (nodeInfo.hasToolVariant) {
+            const toolVariantType = tool_variant_generator_1.ToolVariantGenerator.getToolVariantNodeType(normalizedType);
+            const workflowToolVariantType = node_type_normalizer_1.NodeTypeNormalizer.toWorkflowFormat(toolVariantType);
+            result.errors.push({
+                type: 'error',
+                nodeId: sourceNode.id,
+                nodeName: sourceNode.name,
+                message: `Node "${sourceNode.name}" uses "${sourceNode.type}" which cannot output ai_tool connections. ` +
+                    `Use the Tool variant "${workflowToolVariantType}" instead for AI Agent integration.`,
+                code: 'WRONG_NODE_TYPE_FOR_AI_TOOL',
+                fix: {
+                    type: 'tool-variant-correction',
+                    currentType: sourceNode.type,
+                    suggestedType: workflowToolVariantType,
+                    description: `Change node type from "${sourceNode.type}" to "${workflowToolVariantType}"`
+                }
+            });
+            return;
+        }
+        if (nodeInfo.isAITool) {
+            return;
+        }
+        result.errors.push({
+            type: 'error',
+            nodeId: sourceNode.id,
+            nodeName: sourceNode.name,
+            message: `Node "${sourceNode.name}" of type "${sourceNode.type}" cannot output ai_tool connections. ` +
+                `Only AI tool nodes (e.g., Calculator, HTTP Request Tool) or Tool variants (e.g., *Tool suffix nodes) can be connected to AI Agents as tools.`,
+            code: 'INVALID_AI_TOOL_SOURCE'
+        });
+    }
    hasCycle(workflow) {
        const visited = new Set();
        const recursionStack = new Set();
--- a/dist/services/workflow-validator.js.map
+++ b/dist/services/workflow-validator.js.map
--- a/dist/telemetry/batch-processor.d.ts.map
+++ b/dist/telemetry/batch-processor.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"batch-processor.d.ts","sourceRoot":"","sources":["../../src/telemetry/batch-processor.ts"],"names":[],"mappings":"AAKA,OAAO,EAAE,cAAc,EAAE,MAAM,uBAAuB,CAAC;AACvD,OAAO,EAAE,cAAc,EAAE,iBAAiB,EAAE,sBAAsB,EAAoB,gBAAgB,EAAE,MAAM,mBAAmB,CAAC;AAyBlI,qBAAa,uBAAuB;IAoBhC,OAAO,CAAC,QAAQ;IAChB,OAAO,CAAC,SAAS;IApBnB,OAAO,CAAC,UAAU,CAAC,CAAiB;IACpC,OAAO,CAAC,gBAAgB,CAAkB;IAC1C,OAAO,CAAC,mBAAmB,CAAkB;IAC7C,OAAO,CAAC,mBAAmB,CAAkB;IAC7C,OAAO,CAAC,cAAc,CAA0B;IAChD,OAAO,CAAC,OAAO,CAQb;IACF,OAAO,CAAC,UAAU,CAAgB;IAClC,OAAO,CAAC,eAAe,CAAuE;IAC9F,OAAO,CAAC,QAAQ,CAAC,iBAAiB,CAAO;gBAG/B,QAAQ,EAAE,cAAc,GAAG,IAAI,EAC/B,SAAS,EAAE,MAAM,OAAO;IAQlC,KAAK,IAAI,IAAI;IA+Bb,IAAI,IAAI,IAAI;IAWN,KAAK,CAAC,MAAM,CAAC,EAAE,cAAc,EAAE,EAAE,SAAS,CAAC,EAAE,iBAAiB,EAAE,EAAE,SAAS,CAAC,EAAE,sBAAsB,EAAE,GAAG,OAAO,CAAC,IAAI,CAAC;YAgD9G,WAAW;YAmDX,cAAc;YAuDd,cAAc;YAiEd,gBAAgB;IAgD9B,OAAO,CAAC,aAAa;IAarB,OAAO,CAAC,oBAAoB;IAiB5B,OAAO,CAAC,oBAAoB;YAmBd,sBAAsB;IAgCpC,OAAO,CAAC,eAAe;IAiBvB,UAAU,IAAI,gBAAgB,GAAG;QAAE,mBAAmB,EAAE,GAAG,CAAC;QAAC,mBAAmB,EAAE,MAAM,CAAA;KAAE;IAW1F,YAAY,IAAI,IAAI;CAarB"}
+{"version":3,"file":"batch-processor.d.ts","sourceRoot":"","sources":["../../src/telemetry/batch-processor.ts"],"names":[],"mappings":"AAKA,OAAO,EAAE,cAAc,EAAE,MAAM,uBAAuB,CAAC;AACvD,OAAO,EAAE,cAAc,EAAE,iBAAiB,EAAE,sBAAsB,EAAoB,gBAAgB,EAAE,MAAM,mBAAmB,CAAC;AAoClI,qBAAa,uBAAuB;IAoBhC,OAAO,CAAC,QAAQ;IAChB,OAAO,CAAC,SAAS;IApBnB,OAAO,CAAC,UAAU,CAAC,CAAiB;IACpC,OAAO,CAAC,gBAAgB,CAAkB;IAC1C,OAAO,CAAC,mBAAmB,CAAkB;IAC7C,OAAO,CAAC,mBAAmB,CAAkB;IAC7C,OAAO,CAAC,cAAc,CAA0B;IAChD,OAAO,CAAC,OAAO,CAQb;IACF,OAAO,CAAC,UAAU,CAAgB;IAClC,OAAO,CAAC,eAAe,CAAuE;IAC9F,OAAO,CAAC,QAAQ,CAAC,iBAAiB,CAAO;gBAG/B,QAAQ,EAAE,cAAc,GAAG,IAAI,EAC/B,SAAS,EAAE,MAAM,OAAO;IAQlC,KAAK,IAAI,IAAI;IA+Bb,IAAI,IAAI,IAAI;IAWN,KAAK,CAAC,MAAM,CAAC,EAAE,cAAc,EAAE,EAAE,SAAS,CAAC,EAAE,iBAAiB,EAAE,EAAE,SAAS,CAAC,EAAE,sBAAsB,EAAE,GAAG,OAAO,CAAC,IAAI,CAAC;YAgD9G,WAAW;YAmDX,cAAc;YAuDd,cAAc;YAiEd,gBAAgB;IAgD9B,OAAO,CAAC,aAAa;IAarB,OAAO,CAAC,oBAAoB;IAiB5B,OAAO,CAAC,oBAAoB;YAmBd,sBAAsB;IAgCpC,OAAO,CAAC,eAAe;IAiBvB,UAAU,IAAI,gBAAgB,GAAG;QAAE,mBAAmB,EAAE,GAAG,CAAC;QAAC,mBAAmB,EAAE,MAAM,CAAA;KAAE;IAW1F,YAAY,IAAI,IAAI;CAarB"}
--- a/dist/telemetry/batch-processor.js
+++ b/dist/telemetry/batch-processor.js
@@ -4,19 +4,13 @@ exports.TelemetryBatchProcessor = void 0;
 const telemetry_types_1 = require("./telemetry-types");
 const telemetry_error_1 = require("./telemetry-error");
 const logger_1 = require("../utils/logger");
-function toSnakeCase(obj) {
-    if (obj === null || obj === undefined)
-        return obj;
-    if (Array.isArray(obj))
-        return obj.map(toSnakeCase);
-    if (typeof obj !== 'object')
-        return obj;
+function keyToSnakeCase(key) {
+    return key.replace(/[A-Z]/g, letter => `_${letter.toLowerCase()}`);
+}
+function mutationToSupabaseFormat(mutation) {
    const result = {};
-    for (const key in obj) {
-        if (obj.hasOwnProperty(key)) {
-            const snakeKey = key.replace(/[A-Z]/g, letter => `_${letter.toLowerCase()}`);
-            result[snakeKey] = toSnakeCase(obj[key]);
-        }
+    for (const [key, value] of Object.entries(mutation)) {
+        result[keyToSnakeCase(key)] = value;
    }
    return result;
 }
@@ -185,7 +179,7 @@ class TelemetryBatchProcessor {
            const batches = this.createBatches(mutations, telemetry_types_1.TELEMETRY_CONFIG.MAX_BATCH_SIZE);
            for (const batch of batches) {
                const result = await this.executeWithRetry(async () => {
-                    const snakeCaseBatch = batch.map(mutation => toSnakeCase(mutation));
+                    const snakeCaseBatch = batch.map(mutation => mutationToSupabaseFormat(mutation));
                    const { error } = await this.supabase
                        .from('workflow_mutations')
                        .insert(snakeCaseBatch);
--- a/dist/telemetry/batch-processor.js.map
+++ b/dist/telemetry/batch-processor.js.map
--- a/dist/telemetry/event-validator.d.ts
+++ b/dist/telemetry/event-validator.d.ts
@@ -7,13 +7,13 @@ export declare const telemetryEventSchema: z.ZodObject<{
    created_at: z.ZodOptional<z.ZodString>;
 }, "strip", z.ZodTypeAny, {
    properties: Record<string, any>;
-    user_id: string;
    event: string;
+    user_id: string;
    created_at?: string | undefined;
 }, {
    properties: Record<string, unknown>;
-    user_id: string;
    event: string;
+    user_id: string;
    created_at?: string | undefined;
 }>;
 export declare const workflowTelemetrySchema: z.ZodObject<{
--- a/dist/types/index.d.ts
+++ b/dist/types/index.d.ts
@@ -7,6 +7,13 @@ export interface MCPServerConfig {
    host: string;
    authToken?: string;
 }
+export interface ToolAnnotations {
+    title?: string;
+    readOnlyHint?: boolean;
+    destructiveHint?: boolean;
+    idempotentHint?: boolean;
+    openWorldHint?: boolean;
+}
 export interface ToolDefinition {
    name: string;
    description: string;
@@ -22,6 +29,7 @@ export interface ToolDefinition {
        required?: string[];
        additionalProperties?: boolean | Record<string, any>;
    };
+    annotations?: ToolAnnotations;
 }
 export interface ResourceDefinition {
    uri: string;
--- a/dist/types/index.d.ts.map
+++ b/dist/types/index.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../../src/types/index.ts"],"names":[],"mappings":"AACA,cAAc,cAAc,CAAC;AAC7B,cAAc,mBAAmB,CAAC;AAClC,cAAc,oBAAoB,CAAC;AACnC,cAAc,iBAAiB,CAAC;AAEhC,MAAM,WAAW,eAAe;IAC9B,IAAI,EAAE,MAAM,CAAC;IACb,IAAI,EAAE,MAAM,CAAC;IACb,SAAS,CAAC,EAAE,MAAM,CAAC;CACpB;AAED,MAAM,WAAW,cAAc;IAC7B,IAAI,EAAE,MAAM,CAAC;IACb,WAAW,EAAE,MAAM,CAAC;IACpB,WAAW,EAAE;QACX,IAAI,EAAE,MAAM,CAAC;QACb,UAAU,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;QAChC,QAAQ,CAAC,EAAE,MAAM,EAAE,CAAC;QACpB,oBAAoB,CAAC,EAAE,OAAO,GAAG,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;KACtD,CAAC;IACF,YAAY,CAAC,EAAE;QACb,IAAI,EAAE,MAAM,CAAC;QACb,UAAU,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;QAChC,QAAQ,CAAC,EAAE,MAAM,EAAE,CAAC;QACpB,oBAAoB,CAAC,EAAE,OAAO,GAAG,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;KACtD,CAAC;CACH;AAED,MAAM,WAAW,kBAAkB;IACjC,GAAG,EAAE,MAAM,CAAC;IACZ,IAAI,EAAE,MAAM,CAAC;IACb,WAAW,CAAC,EAAE,MAAM,CAAC;IACrB,QAAQ,CAAC,EAAE,MAAM,CAAC;CACnB;AAED,MAAM,WAAW,gBAAgB;IAC/B,IAAI,EAAE,MAAM,CAAC;IACb,WAAW,CAAC,EAAE,MAAM,CAAC;IACrB,SAAS,CAAC,EAAE,KAAK,CAAC;QAChB,IAAI,EAAE,MAAM,CAAC;QACb,WAAW,CAAC,EAAE,MAAM,CAAC;QACrB,QAAQ,CAAC,EAAE,OAAO,CAAC;KACpB,CAAC,CAAC;CACJ"}
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../../src/types/index.ts"],"names":[],"mappings":"AACA,cAAc,cAAc,CAAC;AAC7B,cAAc,mBAAmB,CAAC;AAClC,cAAc,oBAAoB,CAAC;AACnC,cAAc,iBAAiB,CAAC;AAEhC,MAAM,WAAW,eAAe;IAC9B,IAAI,EAAE,MAAM,CAAC;IACb,IAAI,EAAE,MAAM,CAAC;IACb,SAAS,CAAC,EAAE,MAAM,CAAC;CACpB;AAMD,MAAM,WAAW,eAAe;IAE9B,KAAK,CAAC,EAAE,MAAM,CAAC;IAEf,YAAY,CAAC,EAAE,OAAO,CAAC;IAEvB,eAAe,CAAC,EAAE,OAAO,CAAC;IAE1B,cAAc,CAAC,EAAE,OAAO,CAAC;IAEzB,aAAa,CAAC,EAAE,OAAO,CAAC;CACzB;AAED,MAAM,WAAW,cAAc;IAC7B,IAAI,EAAE,MAAM,CAAC;IACb,WAAW,EAAE,MAAM,CAAC;IACpB,WAAW,EAAE;QACX,IAAI,EAAE,MAAM,CAAC;QACb,UAAU,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;QAChC,QAAQ,CAAC,EAAE,MAAM,EAAE,CAAC;QACpB,oBAAoB,CAAC,EAAE,OAAO,GAAG,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;KACtD,CAAC;IACF,YAAY,CAAC,EAAE;QACb,IAAI,EAAE,MAAM,CAAC;QACb,UAAU,EAAE,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;QAChC,QAAQ,CAAC,EAAE,MAAM,EAAE,CAAC;QACpB,oBAAoB,CAAC,EAAE,OAAO,GAAG,MAAM,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC;KACtD,CAAC;IAEF,WAAW,CAAC,EAAE,eAAe,CAAC;CAC/B;AAED,MAAM,WAAW,kBAAkB;IACjC,GAAG,EAAE,MAAM,CAAC;IACZ,IAAI,EAAE,MAAM,CAAC;IACb,WAAW,CAAC,EAAE,MAAM,CAAC;IACrB,QAAQ,CAAC,EAAE,MAAM,CAAC;CACnB;AAED,MAAM,WAAW,gBAAgB;IAC/B,IAAI,EAAE,MAAM,CAAC;IACb,WAAW,CAAC,EAAE,MAAM,CAAC;IACrB,SAAS,CAAC,EAAE,KAAK,CAAC;QAChB,IAAI,EAAE,MAAM,CAAC;QACb,WAAW,CAAC,EAAE,MAAM,CAAC;QACrB,QAAQ,CAAC,EAAE,OAAO,CAAC;KACpB,CAAC,CAAC;CACJ"}
--- a/dist/types/n8n-api.d.ts
+++ b/dist/types/n8n-api.d.ts
@@ -267,7 +267,7 @@ export interface McpToolResponse {
    executionId?: string;
    workflowId?: string;
 }
-export type ExecutionMode = 'preview' | 'summary' | 'filtered' | 'full';
+export type ExecutionMode = 'preview' | 'summary' | 'filtered' | 'full' | 'error';
 export interface ExecutionPreview {
    totalNodes: number;
    executedNodes: number;
@@ -296,6 +296,9 @@ export interface ExecutionFilterOptions {
    itemsLimit?: number;
    includeInputData?: boolean;
    fieldsToInclude?: string[];
+    errorItemsLimit?: number;
+    includeStackTrace?: boolean;
+    includeExecutionPath?: boolean;
 }
 export interface FilteredExecutionResponse {
    id: string;
@@ -316,6 +319,7 @@ export interface FilteredExecutionResponse {
    };
    nodes?: Record<string, FilteredNodeData>;
    error?: Record<string, unknown>;
+    errorInfo?: ErrorAnalysis;
 }
 export interface FilteredNodeData {
    executionTime?: number;
@@ -333,4 +337,39 @@ export interface FilteredNodeData {
        };
    };
 }
+export interface ErrorAnalysis {
+    primaryError: {
+        message: string;
+        errorType: string;
+        nodeName: string;
+        nodeType: string;
+        nodeId?: string;
+        nodeParameters?: Record<string, unknown>;
+        stackTrace?: string;
+    };
+    upstreamContext?: {
+        nodeName: string;
+        nodeType: string;
+        itemCount: number;
+        sampleItems: unknown[];
+        dataStructure: Record<string, unknown>;
+    };
+    executionPath?: Array<{
+        nodeName: string;
+        status: 'success' | 'error' | 'skipped';
+        itemCount: number;
+        executionTime?: number;
+    }>;
+    additionalErrors?: Array<{
+        nodeName: string;
+        message: string;
+    }>;
+    suggestions?: ErrorSuggestion[];
+}
+export interface ErrorSuggestion {
+    type: 'fix' | 'investigate' | 'workaround';
+    title: string;
+    description: string;
+    confidence: 'high' | 'medium' | 'low';
+}
 //# sourceMappingURL=n8n-api.d.ts.map
--- a/dist/types/n8n-api.d.ts.map
+++ b/dist/types/n8n-api.d.ts.map
--- a/dist/utils/node-type-normalizer.d.ts
+++ b/dist/utils/node-type-normalizer.d.ts
@@ -12,5 +12,6 @@ export declare class NodeTypeNormalizer {
    static normalizeWorkflowNodeTypes(workflow: any): any;
    static isFullForm(type: string): boolean;
    static isShortForm(type: string): boolean;
+    static toWorkflowFormat(type: string): string;
 }
 //# sourceMappingURL=node-type-normalizer.d.ts.map
--- a/dist/utils/node-type-normalizer.d.ts.map
+++ b/dist/utils/node-type-normalizer.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"node-type-normalizer.d.ts","sourceRoot":"","sources":["../../src/utils/node-type-normalizer.ts"],"names":[],"mappings":"AA2CA,MAAM,WAAW,2BAA2B;IAC1C,QAAQ,EAAE,MAAM,CAAC;IACjB,UAAU,EAAE,MAAM,CAAC;IACnB,aAAa,EAAE,OAAO,CAAC;IACvB,OAAO,EAAE,MAAM,GAAG,WAAW,GAAG,WAAW,GAAG,SAAS,CAAC;CACzD;AAED,qBAAa,kBAAkB;IAyB7B,MAAM,CAAC,mBAAmB,CAAC,IAAI,EAAE,MAAM,GAAG,MAAM;IAuChD,MAAM,CAAC,oBAAoB,CAAC,IAAI,EAAE,MAAM,GAAG,2BAA2B;IAkBtE,OAAO,CAAC,MAAM,CAAC,aAAa;IAuB5B,MAAM,CAAC,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC;IA8B3D,MAAM,CAAC,0BAA0B,CAAC,QAAQ,EAAE,GAAG,GAAG,GAAG;IAoBrD,MAAM,CAAC,UAAU,CAAC,IAAI,EAAE,MAAM,GAAG,OAAO;IAkBxC,MAAM,CAAC,WAAW,CAAC,IAAI,EAAE,MAAM,GAAG,OAAO;CAU1C"}
+{"version":3,"file":"node-type-normalizer.d.ts","sourceRoot":"","sources":["../../src/utils/node-type-normalizer.ts"],"names":[],"mappings":"AA2CA,MAAM,WAAW,2BAA2B;IAC1C,QAAQ,EAAE,MAAM,CAAC;IACjB,UAAU,EAAE,MAAM,CAAC;IACnB,aAAa,EAAE,OAAO,CAAC;IACvB,OAAO,EAAE,MAAM,GAAG,WAAW,GAAG,WAAW,GAAG,SAAS,CAAC;CACzD;AAED,qBAAa,kBAAkB;IAyB7B,MAAM,CAAC,mBAAmB,CAAC,IAAI,EAAE,MAAM,GAAG,MAAM;IAuChD,MAAM,CAAC,oBAAoB,CAAC,IAAI,EAAE,MAAM,GAAG,2BAA2B;IAkBtE,OAAO,CAAC,MAAM,CAAC,aAAa;IAuB5B,MAAM,CAAC,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC;IA8B3D,MAAM,CAAC,0BAA0B,CAAC,QAAQ,EAAE,GAAG,GAAG,GAAG;IAoBrD,MAAM,CAAC,UAAU,CAAC,IAAI,EAAE,MAAM,GAAG,OAAO;IAkBxC,MAAM,CAAC,WAAW,CAAC,IAAI,EAAE,MAAM,GAAG,OAAO;IAgCzC,MAAM,CAAC,gBAAgB,CAAC,IAAI,EAAE,MAAM,GAAG,MAAM;CAgB9C"}
--- a/dist/utils/node-type-normalizer.js
+++ b/dist/utils/node-type-normalizer.js
@@ -70,6 +70,18 @@ class NodeTypeNormalizer {
        return (type.startsWith('nodes-base.') ||
            type.startsWith('nodes-langchain.'));
    }
+    static toWorkflowFormat(type) {
+        if (!type || typeof type !== 'string') {
+            return type;
+        }
+        if (type.startsWith('nodes-base.')) {
+            return type.replace(/^nodes-base\./, 'n8n-nodes-base.');
+        }
+        if (type.startsWith('nodes-langchain.')) {
+            return type.replace(/^nodes-langchain\./, '@n8n/n8n-nodes-langchain.');
+        }
+        return type;
+    }
 }
 exports.NodeTypeNormalizer = NodeTypeNormalizer;
 //# sourceMappingURL=node-type-normalizer.js.map
--- a/dist/utils/node-type-normalizer.js.map
+++ b/dist/utils/node-type-normalizer.js.map
@@ -1 +1 @@
-{"version":3,"file":"node-type-normalizer.js","sourceRoot":"","sources":["../../src/utils/node-type-normalizer.ts"],"names":[],"mappings":";;;AAkDA,MAAa,kBAAkB;IAyB7B,MAAM,CAAC,mBAAmB,CAAC,IAAY;QACrC,IAAI,CAAC,IAAI,IAAI,OAAO,IAAI,KAAK,QAAQ,EAAE,CAAC;YACtC,OAAO,IAAI,CAAC;QACd,CAAC;QAGD,IAAI,IAAI,CAAC,UAAU,CAAC,iBAAiB,CAAC,EAAE,CAAC;YACvC,OAAO,IAAI,CAAC,OAAO,CAAC,mBAAmB,EAAE,aAAa,CAAC,CAAC;QAC1D,CAAC;QACD,IAAI,IAAI,CAAC,UAAU,CAAC,2BAA2B,CAAC,EAAE,CAAC;YACjD,OAAO,IAAI,CAAC,OAAO,CAAC,8BAA8B,EAAE,kBAAkB,CAAC,CAAC;QAC1E,CAAC;QAED,IAAI,IAAI,CAAC,UAAU,CAAC,sBAAsB,CAAC,EAAE,CAAC;YAC5C,OAAO,IAAI,CAAC,OAAO,CAAC,wBAAwB,EAAE,kBAAkB,CAAC,CAAC;QACpE,CAAC;QAGD,OAAO,IAAI,CAAC;IACd,CAAC;IAoBD,MAAM,CAAC,oBAAoB,CAAC,IAAY;QACtC,MAAM,QAAQ,GAAG,IAAI,CAAC;QACtB,MAAM,UAAU,GAAG,IAAI,CAAC,mBAAmB,CAAC,IAAI,CAAC,CAAC;QAElD,OAAO;YACL,QAAQ;YACR,UAAU;YACV,aAAa,EAAE,QAAQ,KAAK,UAAU;YACtC,OAAO,EAAE,IAAI,CAAC,aAAa,CAAC,UAAU,CAAC;SACxC,CAAC;IACJ,CAAC;IAQO,MAAM,CAAC,aAAa,CAAC,IAAY;QAEvC,IAAI,IAAI,CAAC,UAAU,CAAC,aAAa,CAAC,IAAI,IAAI,CAAC,UAAU,CAAC,iBAAiB,CAAC;YAAE,OAAO,MAAM,CAAC;QACxF,IAAI,IAAI,CAAC,UAAU,CAAC,kBAAkB,CAAC,IAAI,IAAI,CAAC,UAAU,CAAC,2BAA2B,CAAC,IAAI,IAAI,CAAC,UAAU,CAAC,sBAAsB,CAAC;YAAE,OAAO,WAAW,CAAC;QACvJ,IAAI,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC;YAAE,OAAO,WAAW,CAAC;QAC3C,OAAO,SAAS,CAAC;IACnB,CAAC;IAiBD,MAAM,CAAC,cAAc,CAAC,KAAe;QACnC,MAAM,MAAM,GAAG,IAAI,GAAG,EAAkB,CAAC;QACzC,KAAK,MAAM,IAAI,IAAI,KAAK,EAAE,CAAC;YACzB,MAAM,CAAC,GAAG,CAAC,IAAI,EAAE,IAAI,CAAC,mBAAmB,CAAC,IAAI,CAAC,CAAC,CAAC;QACnD,CAAC;QACD,OAAO,MAAM,CAAC;IAChB,CAAC;IAwBD,MAAM,CAAC,0BAA0B,CAAC,QAAa;QAC7C,IAAI,CAAC,QAAQ,EAAE,KAAK,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,QAAQ,CAAC,KAAK,CAAC,EAAE,CAAC;YACvD,OAAO,QAAQ,CAAC;QAClB,CAAC;QAED,OAAO;YACL,GAAG,QAAQ;YACX,KAAK,EAAE,QAAQ,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,IAAS,EAAE,EAAE,CAAC,CAAC;gBACxC,GAAG,IAAI;gBACP,IAAI,EAAE,IAAI,CAAC,mBAAmB,CAAC,IAAI,CAAC,IAAI,CAAC;aAC1C,CAAC,CAAC;SACJ,CAAC;IACJ,CAAC;IAQD,MAAM,CAAC,UAAU,CAAC,IAAY;QAC5B,IAAI,CAAC,IAAI,IAAI,OAAO,IAAI,KAAK,QAAQ,EAAE,CAAC;YACtC,OAAO,KAAK,CAAC;QACf,CAAC;QAED,OAAO,CACL,IAAI,CAAC,UAAU,CAAC,iBAAiB,CAAC;YAClC,IAAI,CAAC,UAAU,CAAC,2BAA2B,CAAC;YAC5C,IAAI,CAAC,UAAU,CAAC,sBAAsB,CAAC,CACxC,CAAC;IACJ,CAAC;IAQD,MAAM,CAAC,WAAW,CAAC,IAAY;QAC7B,IAAI,CAAC,IAAI,IAAI,OAAO,IAAI,KAAK,QAAQ,EAAE,CAAC;YACtC,OAAO,KAAK,CAAC;QACf,CAAC;QAED,OAAO,CACL,IAAI,CAAC,UAAU,CAAC,aAAa,CAAC;YAC9B,IAAI,CAAC,UAAU,CAAC,kBAAkB,CAAC,CACpC,CAAC;IACJ,CAAC;CACF;AAvLD,gDAuLC"}
+{"version":3,"file":"node-type-normalizer.js","sourceRoot":"","sources":["../../src/utils/node-type-normalizer.ts"],"names":[],"mappings":";;;AAkDA,MAAa,kBAAkB;IAyB7B,MAAM,CAAC,mBAAmB,CAAC,IAAY;QACrC,IAAI,CAAC,IAAI,IAAI,OAAO,IAAI,KAAK,QAAQ,EAAE,CAAC;YACtC,OAAO,IAAI,CAAC;QACd,CAAC;QAGD,IAAI,IAAI,CAAC,UAAU,CAAC,iBAAiB,CAAC,EAAE,CAAC;YACvC,OAAO,IAAI,CAAC,OAAO,CAAC,mBAAmB,EAAE,aAAa,CAAC,CAAC;QAC1D,CAAC;QACD,IAAI,IAAI,CAAC,UAAU,CAAC,2BAA2B,CAAC,EAAE,CAAC;YACjD,OAAO,IAAI,CAAC,OAAO,CAAC,8BAA8B,EAAE,kBAAkB,CAAC,CAAC;QAC1E,CAAC;QAED,IAAI,IAAI,CAAC,UAAU,CAAC,sBAAsB,CAAC,EAAE,CAAC;YAC5C,OAAO,IAAI,CAAC,OAAO,CAAC,wBAAwB,EAAE,kBAAkB,CAAC,CAAC;QACpE,CAAC;QAGD,OAAO,IAAI,CAAC;IACd,CAAC;IAoBD,MAAM,CAAC,oBAAoB,CAAC,IAAY;QACtC,MAAM,QAAQ,GAAG,IAAI,CAAC;QACtB,MAAM,UAAU,GAAG,IAAI,CAAC,mBAAmB,CAAC,IAAI,CAAC,CAAC;QAElD,OAAO;YACL,QAAQ;YACR,UAAU;YACV,aAAa,EAAE,QAAQ,KAAK,UAAU;YACtC,OAAO,EAAE,IAAI,CAAC,aAAa,CAAC,UAAU,CAAC;SACxC,CAAC;IACJ,CAAC;IAQO,MAAM,CAAC,aAAa,CAAC,IAAY;QAEvC,IAAI,IAAI,CAAC,UAAU,CAAC,aAAa,CAAC,IAAI,IAAI,CAAC,UAAU,CAAC,iBAAiB,CAAC;YAAE,OAAO,MAAM,CAAC;QACxF,IAAI,IAAI,CAAC,UAAU,CAAC,kBAAkB,CAAC,IAAI,IAAI,CAAC,UAAU,CAAC,2BAA2B,CAAC,IAAI,IAAI,CAAC,UAAU,CAAC,sBAAsB,CAAC;YAAE,OAAO,WAAW,CAAC;QACvJ,IAAI,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC;YAAE,OAAO,WAAW,CAAC;QAC3C,OAAO,SAAS,CAAC;IACnB,CAAC;IAiBD,MAAM,CAAC,cAAc,CAAC,KAAe;QACnC,MAAM,MAAM,GAAG,IAAI,GAAG,EAAkB,CAAC;QACzC,KAAK,MAAM,IAAI,IAAI,KAAK,EAAE,CAAC;YACzB,MAAM,CAAC,GAAG,CAAC,IAAI,EAAE,IAAI,CAAC,mBAAmB,CAAC,IAAI,CAAC,CAAC,CAAC;QACnD,CAAC;QACD,OAAO,MAAM,CAAC;IAChB,CAAC;IAwBD,MAAM,CAAC,0BAA0B,CAAC,QAAa;QAC7C,IAAI,CAAC,QAAQ,EAAE,KAAK,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,QAAQ,CAAC,KAAK,CAAC,EAAE,CAAC;YACvD,OAAO,QAAQ,CAAC;QAClB,CAAC;QAED,OAAO;YACL,GAAG,QAAQ;YACX,KAAK,EAAE,QAAQ,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,IAAS,EAAE,EAAE,CAAC,CAAC;gBACxC,GAAG,IAAI;gBACP,IAAI,EAAE,IAAI,CAAC,mBAAmB,CAAC,IAAI,CAAC,IAAI,CAAC;aAC1C,CAAC,CAAC;SACJ,CAAC;IACJ,CAAC;IAQD,MAAM,CAAC,UAAU,CAAC,IAAY;QAC5B,IAAI,CAAC,IAAI,IAAI,OAAO,IAAI,KAAK,QAAQ,EAAE,CAAC;YACtC,OAAO,KAAK,CAAC;QACf,CAAC;QAED,OAAO,CACL,IAAI,CAAC,UAAU,CAAC,iBAAiB,CAAC;YAClC,IAAI,CAAC,UAAU,CAAC,2BAA2B,CAAC;YAC5C,IAAI,CAAC,UAAU,CAAC,sBAAsB,CAAC,CACxC,CAAC;IACJ,CAAC;IAQD,MAAM,CAAC,WAAW,CAAC,IAAY;QAC7B,IAAI,CAAC,IAAI,IAAI,OAAO,IAAI,KAAK,QAAQ,EAAE,CAAC;YACtC,OAAO,KAAK,CAAC;QACf,CAAC;QAED,OAAO,CACL,IAAI,CAAC,UAAU,CAAC,aAAa,CAAC;YAC9B,IAAI,CAAC,UAAU,CAAC,kBAAkB,CAAC,CACpC,CAAC;IACJ,CAAC;IAuBD,MAAM,CAAC,gBAAgB,CAAC,IAAY;QAClC,IAAI,CAAC,IAAI,IAAI,OAAO,IAAI,KAAK,QAAQ,EAAE,CAAC;YACtC,OAAO,IAAI,CAAC;QACd,CAAC;QAGD,IAAI,IAAI,CAAC,UAAU,CAAC,aAAa,CAAC,EAAE,CAAC;YACnC,OAAO,IAAI,CAAC,OAAO,CAAC,eAAe,EAAE,iBAAiB,CAAC,CAAC;QAC1D,CAAC;QACD,IAAI,IAAI,CAAC,UAAU,CAAC,kBAAkB,CAAC,EAAE,CAAC;YACxC,OAAO,IAAI,CAAC,OAAO,CAAC,oBAAoB,EAAE,2BAA2B,CAAC,CAAC;QACzE,CAAC;QAGD,OAAO,IAAI,CAAC;IACd,CAAC;CACF;AA7ND,gDA6NC"}
--- a/dist/utils/node-type-utils.d.ts.map
+++ b/dist/utils/node-type-utils.d.ts.map
@@ -1 +1 @@
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--- a/dist/utils/node-type-utils.js
+++ b/dist/utils/node-type-utils.js
@@ -95,11 +95,6 @@ function isTriggerNode(nodeType) {
    return specificTriggers.includes(normalized);
 }
 function isActivatableTrigger(nodeType) {
-    const normalized = normalizeNodeType(nodeType);
-    const lowerType = normalized.toLowerCase();
-    if (lowerType.includes('executeworkflow')) {
-        return false;
-    }
    return isTriggerNode(nodeType);
 }
 function getTriggerTypeDescription(nodeType) {
--- a/dist/utils/node-type-utils.js.map
+++ b/dist/utils/node-type-utils.js.map
@@ -1 +1 @@
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--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,7 +12,8 @@ services:
    environment:
      # Mode configuration
      MCP_MODE: ${MCP_MODE:-http}
-      USE_FIXED_HTTP: ${USE_FIXED_HTTP:-true}  # Use fixed implementation for stability
+      # NOTE: USE_FIXED_HTTP is deprecated. SingleSessionHTTPServer is now the default.
+      # See: https://github.com/czlonkowski/n8n-mcp/issues/524
      AUTH_TOKEN: ${AUTH_TOKEN:?AUTH_TOKEN is required for HTTP mode}
      
      # Application settings
--- a/docs/DOCKER_README.md
+++ b/docs/DOCKER_README.md
@@ -21,7 +21,6 @@ cd n8n-mcp
 # Create .env file with auth token
 cat > .env << EOF
 AUTH_TOKEN=$(openssl rand -base64 32)
-USE_FIXED_HTTP=true
 EOF

 # Start the server
@@ -46,7 +45,6 @@ docker pull ghcr.io/czlonkowski/n8n-mcp:latest
 docker run -d \
  --name n8n-mcp \
  -e MCP_MODE=http \
-  -e USE_FIXED_HTTP=true \
  -e AUTH_TOKEN=your-secure-token \
  -p 3000:3000 \
  ghcr.io/czlonkowski/n8n-mcp:latest
--- a/docs/HTTP_DEPLOYMENT.md
+++ b/docs/HTTP_DEPLOYMENT.md
@@ -67,7 +67,6 @@ Claude Desktop → mcp-remote → https://your-server.com
 # 1. Create environment file
 cat > .env << EOF
 AUTH_TOKEN=$(openssl rand -base64 32)
-USE_FIXED_HTTP=true
 MCP_MODE=http
 PORT=3000
 # Optional: Enable n8n management tools
@@ -106,7 +105,6 @@ npm run rebuild

 # 2. Configure environment
 export MCP_MODE=http
-export USE_FIXED_HTTP=true  # Important: Use fixed implementation
 export AUTH_TOKEN=$(openssl rand -base64 32)
 export PORT=3000

@@ -144,7 +142,6 @@ Skip HTTP entirely and use stdio mode directly:
 | Variable | Description | Example |
 |----------|-------------|------|
 | `MCP_MODE` | Must be set to `http` | `http` |
-| `USE_FIXED_HTTP` | **Important**: Set to `true` for stable implementation | `true` |
 | `AUTH_TOKEN` or `AUTH_TOKEN_FILE` | Authentication method | See security section |

 ### Optional Settings
@@ -417,7 +414,6 @@ services:
    environment:
      # Core configuration
      MCP_MODE: http
-      USE_FIXED_HTTP: true
      NODE_ENV: production
      
      # Security - Using file-based secret
@@ -500,7 +496,6 @@ WorkingDirectory=/opt/n8n-mcp
 # Use file-based secret
 Environment="AUTH_TOKEN_FILE=/etc/n8n-mcp/auth_token"
 Environment="MCP_MODE=http"
-Environment="USE_FIXED_HTTP=true"
 Environment="NODE_ENV=production"
 Environment="TRUST_PROXY=1"
 Environment="BASE_URL=https://n8n-mcp.example.com"
@@ -772,8 +767,8 @@ sudo ufw status  # Linux
 ```

 **"Stream is not readable":**
- Ensure `USE_FIXED_HTTP=true` is set
- Fixed in v2.3.2+
+- This issue was fixed in v2.3.2+ with the SingleSessionHTTPServer
+- No additional configuration needed

 **Bridge script not working:**
 ```bash
--- a/docs/INSTALLATION.md
+++ b/docs/INSTALLATION.md
@@ -18,7 +18,6 @@ The fastest way to get n8n-MCP running:
 # Using Docker (recommended)
 cat > .env << EOF
 AUTH_TOKEN=$(openssl rand -base64 32)
-USE_FIXED_HTTP=true
 EOF
 docker compose up -d
 ```
@@ -49,7 +48,6 @@ docker compose up -d
       
       environment:
         MCP_MODE: ${MCP_MODE:-http}
-         USE_FIXED_HTTP: ${USE_FIXED_HTTP:-true}
         AUTH_TOKEN: ${AUTH_TOKEN:?AUTH_TOKEN is required}
         NODE_ENV: ${NODE_ENV:-production}
         LOG_LEVEL: ${LOG_LEVEL:-info}
--- a/docs/RAILWAY_DEPLOYMENT.md
+++ b/docs/RAILWAY_DEPLOYMENT.md
@@ -98,7 +98,6 @@ These are automatically set by the Railway template:
 |----------|--------------|-------------|
 | `AUTH_TOKEN` | `REPLACE_THIS...` | **⚠️ CHANGE IMMEDIATELY** |
 | `MCP_MODE` | `http` | Required for cloud deployment |
-| `USE_FIXED_HTTP` | `true` | Stable HTTP implementation |
 | `NODE_ENV` | `production` | Production optimizations |
 | `LOG_LEVEL` | `info` | Balanced logging |
 | `TRUST_PROXY` | `1` | Railway runs behind proxy |
--- a/docs/README.md
+++ b/docs/README.md
@@ -40,7 +40,6 @@ Key configuration options:
 | Variable | Description | Default |
 |----------|-------------|---------|
 | `MCP_MODE` | Server mode: `stdio` or `http` | `stdio` |
-| `USE_FIXED_HTTP` | Use fixed HTTP implementation (v2.3.2+) | `true` |
 | `AUTH_TOKEN` | Authentication token for HTTP mode | Required |
 | `PORT` | HTTP server port | `3000` |
 | `LOG_LEVEL` | Logging verbosity | `info` |
--- a/package-lock.json
+++ b/package-lock.json
--- a/Show More
+++ b/Show More