chore: bump version to 2.31.8 and add CHANGELOG entry

- Fix comment inaccuracy: "deprecated" not "deprecated and removed" - Bump version from 2.31.7 to 2.31.8 - Add CHANGELOG entry documenting USE_FIXED_HTTP deprecation - Update all deprecation messages to reference v2.31.8 Concieved 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>
fix: deprecate USE_FIXED_HTTP for SSE streaming support (Issue #524 )
2026-03-17 16:03:08 +00:00 · 2026-01-07 13:24:43 +01:00 · 2026-01-07 13:21:31 +01:00 · 2026-01-06 13:18:56 +01:00 · 2026-01-04 10:43:35 +01:00 · 2026-01-02 15:48:47 +01:00
142 changed files with 8034 additions and 11288 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/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
@@ -5,7 +5,7 @@
 [![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/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 @@
-{"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;IAoChC,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;IAIvB,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;IAyBpB,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"}
+{"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;IAkC3B,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
@@ -106,8 +106,13 @@ class SingleSessionHTTPServer {
            delete this.servers[sessionId];
            delete this.sessionMetadata[sessionId];
            delete this.sessionContexts[sessionId];
-            if (server) {
-                await server.close();
+            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 @@
-{"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,CA2V1B"}
+{"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
@@ -60,6 +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;IA2FvE,KAAK,IAAI,OAAO,CAAC,IAAI,CAAC;YAed,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");
@@ -150,7 +151,17 @@ class N8NDocumentationMCPServer {
    async close() {
        try {
            await this.server.close();
-            this.cache.clear();
+            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;
@@ -1015,12 +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();
@@ -1693,6 +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(`
@@ -1774,7 +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,
@@ -1785,6 +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);
@@ -2084,7 +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),
@@ -2282,6 +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': {
@@ -2352,40 +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-validation.d.ts.map
+++ b/dist/services/n8n-validation.d.ts.map
@@ -1 +1 @@
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+{"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
@@ -152,17 +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)) {
@@ -171,7 +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;
            });
@@ -217,12 +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/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;IA4L9B,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) {
@@ -308,7 +310,11 @@ class WorkflowValidator {
                if (normalizedType.startsWith('nodes-langchain.')) {
                    continue;
                }
-                const nodeValidation = this.nodeValidator.validateWithMode(node.type, node.parameters, nodeInfo.properties || [], 'operation', profile);
+                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 +373,7 @@ 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 +562,51 @@ 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/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "n8n-mcp",
-  "version": "2.28.7",
+  "version": "2.31.8",
  "description": "Integration between n8n workflow automation and Model Context Protocol (MCP)",
  "main": "dist/index.js",
  "types": "dist/index.d.ts",
@@ -22,9 +22,9 @@
    "test-nodes": "node dist/scripts/test-nodes.js",
    "start": "node dist/mcp/index.js",
    "start:http": "MCP_MODE=http node dist/mcp/index.js",
-    "start:http:fixed": "MCP_MODE=http USE_FIXED_HTTP=true node dist/mcp/index.js",
+    "start:http:fixed:deprecated": "echo 'DEPRECATED: USE_FIXED_HTTP is deprecated. Use npm run start:http instead.' && MCP_MODE=http USE_FIXED_HTTP=true node dist/mcp/index.js",
    "start:n8n": "N8N_MODE=true MCP_MODE=http node dist/mcp/index.js",
-    "http": "npm run build && npm run start:http:fixed",
+    "http": "npm run build && npm run start:http",
    "dev": "npm run build && npm run rebuild && npm run validate",
    "dev:http": "MCP_MODE=http nodemon --watch src --ext ts --exec 'npm run build && npm run start:http'",
    "test:single-session": "./scripts/test-single-session.sh",
@@ -141,16 +141,16 @@
  },
  "dependencies": {
    "@modelcontextprotocol/sdk": "1.20.1",
-    "@n8n/n8n-nodes-langchain": "^1.121.1",
+    "@n8n/n8n-nodes-langchain": "^2.2.2",
    "@supabase/supabase-js": "^2.57.4",
    "dotenv": "^16.5.0",
    "express": "^5.1.0",
    "express-rate-limit": "^7.1.5",
    "form-data": "^4.0.5",
    "lru-cache": "^11.2.1",
-    "n8n": "^1.122.4",
-    "n8n-core": "^1.121.1",
-    "n8n-workflow": "^1.119.1",
+    "n8n": "^2.2.3",
+    "n8n-core": "^2.2.2",
+    "n8n-workflow": "^2.2.2",
    "openai": "^4.77.0",
    "sql.js": "^1.13.0",
    "tslib": "^2.6.2",
--- a/package.runtime.json
+++ b/package.runtime.json
@@ -1,6 +1,6 @@
 {
  "name": "n8n-mcp-runtime",
-  "version": "2.28.7",
+  "version": "2.29.5",
  "description": "n8n MCP Server Runtime Dependencies Only",
  "private": true,
  "dependencies": {
--- a/scripts/test-url-configuration.ts
+++ b/scripts/test-url-configuration.ts
@@ -71,10 +71,12 @@ const testCases: TestCase[] = [
    }
  },
  {
-    name: 'Fixed HTTP implementation',
+    // DEPRECATED: This test case tests the deprecated fixed HTTP implementation
+    // See: https://github.com/czlonkowski/n8n-mcp/issues/524
+    name: 'Fixed HTTP implementation (DEPRECATED)',
    env: {
      MCP_MODE: 'http',
-      USE_FIXED_HTTP: 'true',
+      USE_FIXED_HTTP: 'true',  // DEPRECATED: Will be removed in future version
      AUTH_TOKEN: 'test-token-for-testing-only',
      PORT: '3005',
      BASE_URL: 'https://fixed.example.com'
--- a/src/database/node-repository.ts
+++ b/src/database/node-repository.ts
@@ -23,12 +23,13 @@ export 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,
@@ -40,6 +41,9 @@ export class NodeRepository {
      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),
@@ -194,6 +198,58 @@ export class NodeRepository {
    return this.getAITools();
  }

+  /**
+   * Get the Tool variant for a base node
+   */
+  getToolVariant(baseNodeType: string): any | null {
+    // Validate node type format (must be package.nodeName pattern)
+    if (!baseNodeType || typeof baseNodeType !== 'string' || !baseNodeType.includes('.')) {
+      return null;
+    }
+    const toolNodeType = `${baseNodeType}Tool`;
+    return this.getNode(toolNodeType);
+  }
+
+  /**
+   * Get the base node for a Tool variant
+   */
+  getBaseNodeForToolVariant(toolNodeType: string): any | null {
+    const row = this.db.prepare(`
+      SELECT tool_variant_of FROM nodes WHERE node_type = ?
+    `).get(toolNodeType) as any;
+
+    if (!row?.tool_variant_of) return null;
+    return this.getNode(row.tool_variant_of);
+  }
+
+  /**
+   * Get all Tool variants
+   */
+  getToolVariants(): any[] {
+    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() as any[];
+
+    return rows.map(row => ({
+      nodeType: row.node_type,
+      displayName: row.display_name,
+      description: row.description,
+      package: row.package_name,
+      toolVariantOf: row.tool_variant_of
+    }));
+  }
+
+  /**
+   * Get count of Tool variants
+   */
+  getToolVariantCount(): number {
+    const result = this.db.prepare('SELECT COUNT(*) as count FROM nodes WHERE is_tool_variant = 1').get() as any;
+    return result.count;
+  }
+
  getNodesByPackage(packageName: string): any[] {
    const rows = this.db.prepare(`
      SELECT * FROM nodes WHERE package_name = ?
@@ -250,6 +306,9 @@ export 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/src/database/schema.sql
+++ b/src/database/schema.sql
@@ -10,6 +10,9 @@ CREATE TABLE IF NOT EXISTS nodes (
  is_trigger INTEGER DEFAULT 0,
  is_webhook INTEGER DEFAULT 0,
  is_versioned INTEGER DEFAULT 0,
+  is_tool_variant INTEGER DEFAULT 0, -- 1 if this is a *Tool variant for AI Agents
+  tool_variant_of TEXT,              -- For Tool variants: base node type (e.g., nodes-base.supabase)
+  has_tool_variant INTEGER DEFAULT 0, -- For base nodes: 1 if Tool variant exists
  version TEXT,
  documentation TEXT,
  properties_schema TEXT,
@@ -24,6 +27,8 @@ CREATE TABLE IF NOT EXISTS nodes (
 CREATE INDEX IF NOT EXISTS idx_package ON nodes(package_name);
 CREATE INDEX IF NOT EXISTS idx_ai_tool ON nodes(is_ai_tool);
 CREATE INDEX IF NOT EXISTS idx_category ON nodes(category);
+CREATE INDEX IF NOT EXISTS idx_tool_variant ON nodes(is_tool_variant);
+CREATE INDEX IF NOT EXISTS idx_tool_variant_of ON nodes(tool_variant_of);

 -- FTS5 full-text search index for nodes
 CREATE VIRTUAL TABLE IF NOT EXISTS nodes_fts USING fts5(
--- a/src/http-server.ts
+++ b/src/http-server.ts
@@ -1,7 +1,14 @@
 #!/usr/bin/env node
 /**
- * Fixed HTTP server for n8n-MCP that properly handles StreamableHTTPServerTransport initialization
- * This implementation ensures the transport is properly initialized before handling requests
+ * @deprecated This fixed HTTP server is deprecated as of v2.31.8.
+ * Use SingleSessionHTTPServer from http-server-single-session.ts instead.
+ *
+ * This implementation does not support SSE streaming required by clients like OpenAI Codex.
+ * See: https://github.com/czlonkowski/n8n-mcp/issues/524
+ *
+ * Original purpose: Fixed HTTP server for n8n-MCP that properly handles
+ * StreamableHTTPServerTransport initialization by bypassing it entirely.
+ * This implementation ensures the transport is properly initialized before handling requests.
 */
 import express from 'express';
 import { Server } from '@modelcontextprotocol/sdk/server/index.js';
@@ -125,7 +132,18 @@ async function shutdown() {
  }
 }

+/**
+ * @deprecated Use SingleSessionHTTPServer from http-server-single-session.ts instead.
+ * This function does not support SSE streaming required by clients like OpenAI Codex.
+ */
 export async function startFixedHTTPServer() {
+  // Log deprecation warning
+  logger.warn(
+    'DEPRECATION: startFixedHTTPServer() is deprecated as of v2.31.8. ' +
+    'Use SingleSessionHTTPServer which supports SSE streaming. ' +
+    'See: https://github.com/czlonkowski/n8n-mcp/issues/524'
+  );
+
  validateEnvironment();
  
  const app = express();
--- a/src/mcp/handlers-n8n-manager.ts
+++ b/src/mcp/handlers-n8n-manager.ts
@@ -518,8 +518,13 @@ export async function handleCreateWorkflow(args: unknown, context?: InstanceCont

    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) {
    if (error instanceof z.ZodError) {
@@ -813,8 +818,13 @@ export async function handleUpdateWorkflow(

    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) {
    // Track failed mutation
@@ -880,8 +890,12 @@ export async function handleDeleteWorkflow(args: unknown, context?: InstanceCont

    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) {
    if (error instanceof z.ZodError) {
@@ -984,7 +998,7 @@ export async function handleValidateWorkflow(
    const input = validateWorkflowSchema.parse(args);
    
    // First, fetch the workflow from n8n
-    const workflowResponse = await handleGetWorkflow({ id: input.id });
+    const workflowResponse = await handleGetWorkflow({ id: input.id }, context);
    
    if (!workflowResponse.success) {
      return workflowResponse; // Return the error from fetching
@@ -1407,17 +1421,33 @@ export async function handleGetExecution(args: unknown, context?: InstanceContex
    // Parse and validate input with new parameters
    const schema = z.object({
      id: z.string(),
-      // New filtering parameters
-      mode: z.enum(['preview', 'summary', 'filtered', 'full']).optional(),
+      // Filtering parameters
+      mode: z.enum(['preview', 'summary', 'filtered', 'full', 'error']).optional(),
      nodeNames: z.array(z.string()).optional(),
      itemsLimit: z.number().optional(),
      includeInputData: z.boolean().optional(),
      // Legacy parameter (backward compatibility)
-      includeData: z.boolean().optional()
+      includeData: z.boolean().optional(),
+      // Error mode specific parameters
+      errorItemsLimit: z.number().min(0).max(100).optional(),
+      includeStackTrace: z.boolean().optional(),
+      includeExecutionPath: z.boolean().optional(),
+      fetchWorkflow: 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;

    /**
     * Map legacy includeData parameter to mode for backward compatibility
@@ -1456,15 +1486,33 @@ export async function handleGetExecution(args: unknown, context?: InstanceContex
      };
    }

+    // For error mode, optionally fetch workflow for accurate upstream detection
+    let workflow: Workflow | undefined;
+    if (effectiveMode === 'error' && fetchWorkflow !== false && execution.workflowId) {
+      try {
+        workflow = await client.getWorkflow(execution.workflowId);
+      } catch (e) {
+        // Workflow fetch failed - continue without it (use heuristics)
+        logger.debug('Could not fetch workflow for error analysis', {
+          workflowId: execution.workflowId,
+          error: e instanceof Error ? e.message : 'Unknown error'
+        });
+      }
+    }
+
    // Apply filtering using ExecutionProcessor
    const filterOptions: ExecutionFilterOptions = {
      mode: effectiveMode,
      nodeNames,
      itemsLimit,
-      includeInputData
+      includeInputData,
+      // Error mode specific options
+      errorItemsLimit,
+      includeStackTrace,
+      includeExecutionPath
    };

-    const processedExecution = processExecution(execution, filterOptions);
+    const processedExecution = processExecution(execution, filterOptions, workflow);

    return {
      success: true,
--- a/src/mcp/handlers-workflow-diff.ts
+++ b/src/mcp/handlers-workflow-diff.ts
@@ -363,13 +363,15 @@ export async function handleUpdatePartialWorkflow(

      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/src/mcp/index.ts
+++ b/src/mcp/index.ts
@@ -124,9 +124,23 @@ Learn more: https://github.com/czlonkowski/n8n-mcp/blob/main/PRIVACY.md
    checkpoints.push(STARTUP_CHECKPOINTS.MCP_HANDSHAKE_STARTING);
    
    if (mode === 'http') {
-      // Check if we should use the fixed implementation
+      // Check if we should use the fixed implementation (DEPRECATED)
      if (process.env.USE_FIXED_HTTP === 'true') {
-        // Use the fixed HTTP implementation that bypasses StreamableHTTPServerTransport issues
+        // DEPRECATION WARNING: Fixed HTTP implementation is deprecated
+        // It does not support SSE streaming required by clients like OpenAI Codex
+        logger.warn(
+          'DEPRECATION WARNING: USE_FIXED_HTTP=true is deprecated as of v2.31.8. ' +
+          'The fixed HTTP implementation does not support SSE streaming required by clients like OpenAI Codex. ' +
+          'Please unset USE_FIXED_HTTP to use the modern SingleSessionHTTPServer which supports both JSON-RPC and SSE. ' +
+          'This option will be removed in a future version. See: https://github.com/czlonkowski/n8n-mcp/issues/524'
+        );
+        console.warn('\n⚠️  DEPRECATION WARNING ⚠️');
+        console.warn('USE_FIXED_HTTP=true is deprecated as of v2.31.8.');
+        console.warn('The fixed HTTP implementation does not support SSE streaming.');
+        console.warn('Please unset USE_FIXED_HTTP to use SingleSessionHTTPServer.');
+        console.warn('See: https://github.com/czlonkowski/n8n-mcp/issues/524\n');
+
+        // Use the deprecated fixed HTTP implementation
        const { startFixedHTTPServer } = await import('../http-server');
        await startFixedHTTPServer();
      } else {
--- a/src/mcp/server.ts
+++ b/src/mcp/server.ts
@@ -52,6 +52,9 @@ interface NodeRow {
  is_trigger: number;
  is_webhook: number;
  is_versioned: number;
+  is_tool_variant: number;
+  tool_variant_of?: string;
+  has_tool_variant: number;
  version?: string;
  documentation?: string;
  properties_schema?: string;
@@ -65,6 +68,14 @@ interface VersionSummary {
  hasVersionHistory: boolean;
 }

+interface ToolVariantGuidance {
+  isToolVariant: boolean;
+  toolVariantOf?: string;
+  hasToolVariant: boolean;
+  toolVariantNodeType?: string;
+  guidance?: string;
+}
+
 interface NodeMinimalInfo {
  nodeType: string;
  workflowNodeType: string;
@@ -75,6 +86,7 @@ interface NodeMinimalInfo {
  isAITool: boolean;
  isTrigger: boolean;
  isWebhook: boolean;
+  toolVariantInfo?: ToolVariantGuidance;
 }

 interface NodeStandardInfo {
@@ -88,6 +100,7 @@ interface NodeStandardInfo {
  credentials?: any;
  examples?: any[];
  versionInfo: VersionSummary;
+  toolVariantInfo?: ToolVariantGuidance;
 }

 interface NodeFullInfo {
@@ -100,6 +113,7 @@ interface NodeFullInfo {
  credentials?: any;
  documentation?: string;
  versionInfo: VersionSummary;
+  toolVariantInfo?: ToolVariantGuidance;
 }

 interface VersionHistoryInfo {
@@ -1376,12 +1390,20 @@ export class N8NDocumentationMCPServer {
      });
    }

-    return {
+    const result: any = {
      ...node,
      workflowNodeType: getWorkflowNodeType(node.package ?? 'n8n-nodes-base', node.nodeType),
      aiToolCapabilities,
      outputs
    };
+
+    // Add tool variant guidance if applicable
+    const toolVariantInfo = this.buildToolVariantGuidance(node);
+    if (toolVariantInfo) {
+      result.toolVariantInfo = toolVariantInfo;
+    }
+
+    return result;
  }

  /**
@@ -2245,7 +2267,7 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
    // Get the latest version - this is important for AI to use correct typeVersion
    const latestVersion = node.version ?? '1';

-    const result = {
+    const result: any = {
      nodeType: node.nodeType,
      workflowNodeType: getWorkflowNodeType(node.package ?? 'n8n-nodes-base', node.nodeType),
      displayName: node.displayName,
@@ -2275,6 +2297,12 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
      }
    };

+    // Add tool variant guidance if applicable
+    const toolVariantInfo = this.buildToolVariantGuidance(node);
+    if (toolVariantInfo) {
+      result.toolVariantInfo = toolVariantInfo;
+    }
+
    // Add examples from templates if requested
    if (includeExamples) {
      try {
@@ -2426,7 +2454,7 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
          throw new Error(`Node ${nodeType} not found`);
        }

-        return {
+        const result: NodeMinimalInfo = {
          nodeType: node.nodeType,
          workflowNodeType: getWorkflowNodeType(node.package ?? 'n8n-nodes-base', node.nodeType),
          displayName: node.displayName,
@@ -2437,6 +2465,14 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
          isTrigger: node.isTrigger,
          isWebhook: node.isWebhook
        };
+
+        // Add tool variant guidance if applicable
+        const toolVariantInfo = this.buildToolVariantGuidance(node);
+        if (toolVariantInfo) {
+          result.toolVariantInfo = toolVariantInfo;
+        }
+
+        return result;
      }

      case 'standard': {
@@ -2869,12 +2905,18 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
    
    // Get properties
    const properties = node.properties || [];
-    
+
+    // Add @version to config for displayOptions evaluation (supports _cnd operators)
+    const configWithVersion = {
+      '@version': node.version || 1,
+      ...config
+    };
+
    // Use enhanced validator with operation mode by default
    const validationResult = EnhancedConfigValidator.validateWithMode(
-      node.nodeType, 
-      config, 
-      properties, 
+      node.nodeType,
+      configWithVersion,
+      properties,
      mode,
      profile
    );
@@ -3118,7 +3160,45 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
      'Extend AI agent capabilities'
    ];
  }
-  
+
+  /**
+   * Build tool variant guidance for node responses.
+   * Provides cross-reference information between base nodes and their Tool variants.
+   */
+  private buildToolVariantGuidance(node: any): ToolVariantGuidance | undefined {
+    const isToolVariant = !!node.isToolVariant;
+    const hasToolVariant = !!node.hasToolVariant;
+    const toolVariantOf = node.toolVariantOf;
+
+    // If this is neither a Tool variant nor has one, no guidance needed
+    if (!isToolVariant && !hasToolVariant) {
+      return undefined;
+    }
+
+    if (isToolVariant) {
+      // This IS a Tool variant (e.g., nodes-base.supabaseTool)
+      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: ${toolVariantOf}`
+      };
+    }
+
+    if (hasToolVariant && node.nodeType) {
+      // This base node HAS a Tool variant (e.g., nodes-base.supabase)
+      const toolVariantNodeType = `${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;
+  }
+
  private getAIToolExamples(nodeType: string): any {
    const exampleMap: Record<string, any> = {
      'nodes-base.slack': {
@@ -3202,57 +3282,27 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
      throw new Error(`Node ${nodeType} not found`);
    }
    
-    // Get properties  
+    // Get properties
    const properties = node.properties || [];
-    
-    // Extract operation context (safely handle undefined config properties)
-    const operationContext = {
-      resource: config?.resource,
-      operation: config?.operation,
-      action: config?.action,
-      mode: config?.mode
+
+    // Add @version to config for displayOptions evaluation (supports _cnd operators)
+    const configWithVersion = {
+      '@version': node.version || 1,
+      ...(config || {})
    };
-    
+
    // Find missing required fields
    const missingFields: string[] = [];
-    
+
    for (const prop of properties) {
      // Skip if not required
      if (!prop.required) continue;
-      
-      // Skip if not visible based on current config
-      if (prop.displayOptions) {
-        let isVisible = true;
-        
-        // Check show conditions
-        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;
-            }
-          }
-        }
-        
-        // Check hide conditions
-        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;
+
+      // Skip if not visible based on current config (uses ConfigValidator for _cnd support)
+      if (prop.displayOptions && !ConfigValidator.isPropertyVisible(prop, configWithVersion)) {
+        continue;
      }
-      
+
      // Check if field is missing (safely handle null/undefined config)
      if (!config || !(prop.name in config)) {
        missingFields.push(prop.displayName || prop.name);
--- a/src/mcp/tool-docs/templates/get-template.ts
+++ b/src/mcp/tool-docs/templates/get-template.ts
@@ -42,7 +42,7 @@ export const getTemplateDoc: ToolDocumentation = {
  - 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/Show More
+++ b/Show More