chore: update n8n to 2.6.3 and bump version to 2.33.6

- Updated n8n from 2.4.4 to 2.6.3 - Updated n8n-core from 2.4.2 to 2.6.1 - Updated n8n-workflow from 2.4.2 to 2.6.0 - Updated @n8n/n8n-nodes-langchain from 2.4.3 to 2.6.2 - Rebuilt node database with 806 nodes (544 from n8n-nodes-base, 262 from @n8n/n8n-nodes-langchain) - Re-fetched 398 community nodes (331 verified, 67 from npm) - Updated README badge with new n8n version - Updated CHANGELOG with dependency changes Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-07 05:53:07 +00:00 · 2026-02-06 15:31:45 +08:00
39 changed files with 14 additions and 3359 deletions
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -283,8 +283,8 @@ jobs:
      - name: Install dependencies
        run: npm ci
      
-      - name: Build project (server + UI apps)
-        run: npm run build:all
+      - name: Build project
+        run: npm run build

      # Database is already built and committed during development
      # Rebuilding here causes segfault due to memory pressure (exit code 139)
@@ -322,8 +322,8 @@ jobs:
      - name: Install dependencies
        run: npm ci
      
-      - name: Build project (server + UI apps)
-        run: npm run build:all
+      - name: Build project
+        run: npm run build

      # Database is already built and committed during development
      - name: Verify database exists
@@ -347,8 +347,6 @@ jobs:
          # Copy necessary files
          cp -r dist $PUBLISH_DIR/
          cp -r data $PUBLISH_DIR/
-          mkdir -p $PUBLISH_DIR/ui-apps
-          cp -r ui-apps/dist $PUBLISH_DIR/ui-apps/
          cp README.md $PUBLISH_DIR/
          cp LICENSE $PUBLISH_DIR/
          cp .env.example $PUBLISH_DIR/
@@ -379,7 +377,7 @@ jobs:
          pkg.license = 'MIT';
          pkg.bugs = { url: 'https://github.com/czlonkowski/n8n-mcp/issues' };
          pkg.homepage = 'https://github.com/czlonkowski/n8n-mcp#readme';
-          pkg.files = ['dist/**/*', 'ui-apps/dist/**/*', 'data/nodes.db', '.env.example', 'README.md', 'LICENSE'];
+          pkg.files = ['dist/**/*', 'data/nodes.db', '.env.example', 'README.md', 'LICENSE'];
          delete pkg.private;
          require('fs').writeFileSync('./package.json', JSON.stringify(pkg, null, 2));
          "
--- a/.gitignore
+++ b/.gitignore
@@ -138,9 +138,5 @@ n8n-mcp-wrapper.sh
 # MCP configuration files
 .mcp.json

-# UI Apps build output
-ui-apps/dist/
-ui-apps/node_modules/
-
 # Telemetry configuration (user-specific)
 ~/.n8n-mcp/
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,75 +7,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

 ## [Unreleased]

-## [2.34.2] - 2026-02-07
-
-### Fixed
-
- **CI: UI apps missing from npm package**: Release pipeline only ran `npm run build` (TypeScript), so `ui-apps/dist/` was never built and excluded from published packages
-  - Changed build step to `npm run build:all` in `build-and-verify` and `publish-npm` jobs
-  - Added `ui-apps/dist/` to npm publish staging directory
-  - Added `ui-apps/dist/**/*` to published package files list
-
-Conceived by Romuald Czlonkowski - https://www.aiadvisors.pl/en
-
-## [2.34.1] - 2026-02-07
-
-### Changed
-
- **MCP Apps: Align with official ext-apps spec** for Claude Desktop/web compatibility
-  - URI scheme changed from `n8n-mcp://ui/{id}` to `ui://n8n-mcp/{id}` per MCP ext-apps spec
-  - `_meta.ui.resourceUri` now set on tool definitions (`tools/list`) instead of tool call responses
-  - `UIMetadata.ui.app` renamed to `UIMetadata.ui.resourceUri`
-  - Added `_meta` field to `ToolDefinition` type
-  - Added `UIAppRegistry.injectToolMeta()` method for enriching tool definitions
-  - UI apps now use `@modelcontextprotocol/ext-apps` `App` class instead of `window.__MCP_DATA__`
-  - Updated `ReadResource` URI parser to match new `ui://` scheme
-
-Conceived by Romuald Czlonkowski - https://www.aiadvisors.pl/en
-
-## [2.34.0] - 2026-02-07
-
-### Added
-
- **MCP Apps**: Rich HTML UIs rendered by MCP hosts alongside tool results via `_meta.ui` and the MCP resources protocol
-  - Server-side UI module (`src/mcp/ui/`) with tool-to-UI mapping and `_meta.ui` injection
-  - `UIAppRegistry` static class for loading and serving self-contained HTML apps
-  - `UI_APP_CONFIGS` mapping tools to their corresponding UI apps
-
- **Operation Result UI**: Visual summary for workflow operation tools
-  - Status badge, operation type, workflow details card
-  - Expandable sections for nodes added, modified, and removed
-  - Mapped to: `n8n_create_workflow`, `n8n_update_full_workflow`, `n8n_update_partial_workflow`, `n8n_delete_workflow`, `n8n_test_workflow`, `n8n_autofix_workflow`, `n8n_deploy_template`
-
- **Validation Summary UI**: Visual summary for validation tools
-  - Valid/invalid badge with error and warning counts
-  - Expandable error list with type, property, message, and fix
-  - Expandable warning list and suggestions
-  - Mapped to: `validate_node`, `validate_workflow`, `n8n_validate_workflow`
-
- **React + Vite Build Pipeline** (`ui-apps/`):
-  - React 19, Vite 6, vite-plugin-singlefile for self-contained HTML output
-  - Shared component library: Card, Badge, Expandable
-  - `useToolData` hook for reading data from `window.__MCP_DATA__` or embedded JSON
-  - n8n-branded dark theme with CSS custom properties
-  - Per-app builds via `APP_NAME` environment variable
-
- **MCP Resources Protocol**: Server now exposes `resources` capability
-  - `ListResources` handler returns available UI apps
-  - `ReadResource` handler serves self-contained HTML via `n8n-mcp://ui/{id}` URIs
-
- **New Scripts**:
-  - `build:ui`: Build UI apps (`cd ui-apps && npm install && npm run build`)
-  - `build:all`: Build UI apps then server (`npm run build:ui && npm run build`)
-
-### Changed
-
- **MCP Server**: Added `resources: {}` to server capabilities alongside existing `tools: {}`
- **Tool Responses**: Tools with matching UI apps now include `_meta.ui.app` URI pointing to their visual representation
- **Graceful Degradation**: Server starts and operates normally without `ui-apps/dist/`; UI metadata is only injected when HTML is available
-
-Conceived by Romuald Czlonkowski - https://www.aiadvisors.pl/en
-
 ## [2.33.6] - 2026-02-06

 ### Changed
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -5,8 +5,6 @@ export { N8NDocumentationMCPServer } from './mcp/server';
 export type { InstanceContext } from './types/instance-context';
 export { validateInstanceContext, isInstanceContext } from './types/instance-context';
 export type { SessionState } from './types/session-state';
-export type { UIAppConfig, UIMetadata } from './mcp/ui/types';
-export { UI_APP_CONFIGS } from './mcp/ui/app-configs';
 export type { Tool, CallToolResult, ListToolsResult } from '@modelcontextprotocol/sdk/types.js';
 import N8NMCPEngine from './mcp-engine';
 export default N8NMCPEngine;
--- a/dist/index.d.ts.map
+++ b/dist/index.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAOA,OAAO,EAAE,YAAY,EAAE,YAAY,EAAE,aAAa,EAAE,MAAM,cAAc,CAAC;AACzE,OAAO,EAAE,uBAAuB,EAAE,MAAM,8BAA8B,CAAC;AACvE,OAAO,EAAE,cAAc,EAAE,MAAM,yBAAyB,CAAC;AACzD,OAAO,EAAE,yBAAyB,EAAE,MAAM,cAAc,CAAC;AAGzD,YAAY,EACV,eAAe,EAChB,MAAM,0BAA0B,CAAC;AAClC,OAAO,EACL,uBAAuB,EACvB,iBAAiB,EAClB,MAAM,0BAA0B,CAAC;AAClC,YAAY,EACV,YAAY,EACb,MAAM,uBAAuB,CAAC;AAG/B,YAAY,EAAE,WAAW,EAAE,UAAU,EAAE,MAAM,gBAAgB,CAAC;AAC9D,OAAO,EAAE,cAAc,EAAE,MAAM,sBAAsB,CAAC;AAGtD,YAAY,EACV,IAAI,EACJ,cAAc,EACd,eAAe,EAChB,MAAM,oCAAoC,CAAC;AAG5C,OAAO,YAAY,MAAM,cAAc,CAAC;AACxC,eAAe,YAAY,CAAC"}
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAOA,OAAO,EAAE,YAAY,EAAE,YAAY,EAAE,aAAa,EAAE,MAAM,cAAc,CAAC;AACzE,OAAO,EAAE,uBAAuB,EAAE,MAAM,8BAA8B,CAAC;AACvE,OAAO,EAAE,cAAc,EAAE,MAAM,yBAAyB,CAAC;AACzD,OAAO,EAAE,yBAAyB,EAAE,MAAM,cAAc,CAAC;AAGzD,YAAY,EACV,eAAe,EAChB,MAAM,0BAA0B,CAAC;AAClC,OAAO,EACL,uBAAuB,EACvB,iBAAiB,EAClB,MAAM,0BAA0B,CAAC;AAClC,YAAY,EACV,YAAY,EACb,MAAM,uBAAuB,CAAC;AAG/B,YAAY,EACV,IAAI,EACJ,cAAc,EACd,eAAe,EAChB,MAAM,oCAAoC,CAAC;AAG5C,OAAO,YAAY,MAAM,cAAc,CAAC;AACxC,eAAe,YAAY,CAAC"}
--- a/dist/index.js
+++ b/dist/index.js
@@ -3,7 +3,7 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
 };
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.UI_APP_CONFIGS = exports.isInstanceContext = exports.validateInstanceContext = exports.N8NDocumentationMCPServer = exports.ConsoleManager = exports.SingleSessionHTTPServer = exports.N8NMCPEngine = void 0;
+exports.isInstanceContext = exports.validateInstanceContext = exports.N8NDocumentationMCPServer = exports.ConsoleManager = exports.SingleSessionHTTPServer = exports.N8NMCPEngine = void 0;
 var mcp_engine_1 = require("./mcp-engine");
 Object.defineProperty(exports, "N8NMCPEngine", { enumerable: true, get: function () { return mcp_engine_1.N8NMCPEngine; } });
 var http_server_single_session_1 = require("./http-server-single-session");
@@ -15,8 +15,6 @@ Object.defineProperty(exports, "N8NDocumentationMCPServer", { enumerable: true,
 var instance_context_1 = require("./types/instance-context");
 Object.defineProperty(exports, "validateInstanceContext", { enumerable: true, get: function () { return instance_context_1.validateInstanceContext; } });
 Object.defineProperty(exports, "isInstanceContext", { enumerable: true, get: function () { return instance_context_1.isInstanceContext; } });
-var app_configs_1 = require("./mcp/ui/app-configs");
-Object.defineProperty(exports, "UI_APP_CONFIGS", { enumerable: true, get: function () { return app_configs_1.UI_APP_CONFIGS; } });
 const mcp_engine_2 = __importDefault(require("./mcp-engine"));
 exports.default = mcp_engine_2.default;
 //# sourceMappingURL=index.js.map
--- a/dist/index.js.map
+++ b/dist/index.js.map
@@ -1 +1 @@
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+{"version":3,"file":"index.js","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":";;;;;;AAOA,2CAAyE;AAAhE,0GAAA,YAAY,OAAA;AACrB,2EAAuE;AAA9D,qIAAA,uBAAuB,OAAA;AAChC,2DAAyD;AAAhD,iHAAA,cAAc,OAAA;AACvB,uCAAyD;AAAhD,mHAAA,yBAAyB,OAAA;AAMlC,6DAGkC;AAFhC,2HAAA,uBAAuB,OAAA;AACvB,qHAAA,iBAAiB,OAAA;AAcnB,8DAAwC;AACxC,kBAAe,oBAAY,CAAC"}
--- 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":"AA0CA,OAAO,EAAE,eAAe,EAAE,MAAM,2BAA2B,CAAC;AAE5D,OAAO,EAAE,gBAAgB,EAAE,MAAM,iCAAiC,CAAC;AAmGnE,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;IACtD,OAAO,CAAC,iBAAiB,CAAkB;IAC3C,OAAO,CAAC,aAAa,CAAoC;IACzD,OAAO,CAAC,UAAU,CAAkB;gBAExB,eAAe,CAAC,EAAE,eAAe,EAAE,WAAW,CAAC,EAAE,gBAAgB;IAuGvE,KAAK,IAAI,OAAO,CAAC,IAAI,CAAC;YA+Cd,kBAAkB;YAiDlB,wBAAwB;IA0BtC,OAAO,CAAC,kBAAkB;YA6CZ,iBAAiB;IAa/B,OAAO,CAAC,eAAe,CAAkB;YAE3B,sBAAsB;IAgDpC,OAAO,CAAC,gBAAgB;IAqCxB,OAAO,CAAC,aAAa;IAmWrB,OAAO,CAAC,wBAAwB;IAoFhC,OAAO,CAAC,kBAAkB;IAqE1B,OAAO,CAAC,uBAAuB;IAwB/B,OAAO,CAAC,qBAAqB;YAoTf,SAAS;YA2DT,WAAW;YAkFX,WAAW;YA0CX,cAAc;YA8Md,gBAAgB;IAqD9B,OAAO,CAAC,mBAAmB;IAwE3B,OAAO,CAAC,eAAe;YAsBT,eAAe;IA2L7B,OAAO,CAAC,kBAAkB;IAQ1B,OAAO,CAAC,uBAAuB;IA0D/B,OAAO,CAAC,iBAAiB;YAqFX,WAAW;YAgCX,oBAAoB;IAuFlC,OAAO,CAAC,aAAa;YAQP,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;CAgEhC"}
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--- a/dist/mcp/server.js
+++ b/dist/mcp/server.js
@@ -43,7 +43,6 @@ const types_js_1 = require("@modelcontextprotocol/sdk/types.js");
 const fs_1 = require("fs");
 const path_1 = __importDefault(require("path"));
 const tools_1 = require("./tools");
-const ui_1 = require("./ui");
 const tools_n8n_manager_1 = require("./tools-n8n-manager");
 const tools_n8n_friendly_1 = require("./tools-n8n-friendly");
 const workflow_examples_1 = require("./workflow-examples");
@@ -149,10 +148,8 @@ class N8NDocumentationMCPServer {
        }, {
            capabilities: {
                tools: {},
-                resources: {},
            },
        });
-        ui_1.UIAppRegistry.load();
        this.setupHandlers();
    }
    async close() {
@@ -371,7 +368,6 @@ class N8NDocumentationMCPServer {
                protocolVersion: negotiationResult.version,
                capabilities: {
                    tools: {},
-                    resources: {},
                },
                serverInfo: {
                    name: 'n8n-documentation-mcp',
@@ -529,10 +525,6 @@ class N8NDocumentationMCPServer {
                if (name.startsWith('validate_') && structuredContent !== null) {
                    mcpResponse.structuredContent = structuredContent;
                }
-                const uiApp = ui_1.UIAppRegistry.getAppForTool(name);
-                if (uiApp && uiApp.html) {
-                    mcpResponse._meta = { ui: { app: uiApp.config.uri } };
-                }
                return mcpResponse;
            }
            catch (error) {
@@ -570,39 +562,6 @@ class N8NDocumentationMCPServer {
                };
            }
        });
-        this.server.setRequestHandler(types_js_1.ListResourcesRequestSchema, async () => {
-            const apps = ui_1.UIAppRegistry.getAllApps();
-            return {
-                resources: apps
-                    .filter(app => app.html !== null)
-                    .map(app => ({
-                    uri: app.config.uri,
-                    name: app.config.displayName,
-                    description: app.config.description,
-                    mimeType: app.config.mimeType,
-                })),
-            };
-        });
-        this.server.setRequestHandler(types_js_1.ReadResourceRequestSchema, async (request) => {
-            const uri = request.params.uri;
-            const match = uri.match(/^n8n-mcp:\/\/ui\/(.+)$/);
-            if (!match) {
-                throw new Error(`Unknown resource URI: ${uri}`);
-            }
-            const app = ui_1.UIAppRegistry.getAppById(match[1]);
-            if (!app || !app.html) {
-                throw new Error(`UI app not found or not built: ${match[1]}`);
-            }
-            return {
-                contents: [
-                    {
-                        uri: app.config.uri,
-                        mimeType: app.config.mimeType,
-                        text: app.html,
-                    },
-                ],
-            };
-        });
    }
    sanitizeValidationResult(result, toolName) {
        if (!result || typeof result !== 'object') {
--- a/dist/mcp/server.js.map
+++ b/dist/mcp/server.js.map
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "n8n-mcp",
-  "version": "2.34.2",
+  "version": "2.33.6",
  "description": "Integration between n8n workflow automation and Model Context Protocol (MCP)",
  "main": "dist/index.js",
  "types": "dist/index.d.ts",
@@ -16,8 +16,6 @@
  },
  "scripts": {
    "build": "tsc -p tsconfig.build.json",
-    "build:ui": "cd ui-apps && npm install && npm run build",
-    "build:all": "npm run build:ui && npm run build",
    "rebuild": "node dist/scripts/rebuild.js",
    "rebuild:optimized": "node dist/scripts/rebuild-optimized.js",
    "validate": "node dist/scripts/validate.js",
@@ -125,7 +123,6 @@
  "homepage": "https://github.com/czlonkowski/n8n-mcp#readme",
  "files": [
    "dist/**/*",
-    "ui-apps/dist/**/*",
    "data/nodes.db",
    ".env.example",
    "README.md",
--- a/src/index.ts
+++ b/src/index.ts
@@ -22,10 +22,6 @@ export type {
  SessionState
 } from './types/session-state';

-// UI module exports
-export type { UIAppConfig, UIMetadata } from './mcp/ui/types';
-export { UI_APP_CONFIGS } from './mcp/ui/app-configs';
-
 // Re-export MCP SDK types for convenience
 export type {
  Tool,
--- a/src/mcp/server.ts
+++ b/src/mcp/server.ts
@@ -1,16 +1,13 @@
 import { Server } from '@modelcontextprotocol/sdk/server/index.js';
 import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
-import {
-  CallToolRequestSchema,
+import { 
+  CallToolRequestSchema, 
  ListToolsRequestSchema,
  InitializeRequestSchema,
-  ListResourcesRequestSchema,
-  ReadResourceRequestSchema,
 } from '@modelcontextprotocol/sdk/types.js';
 import { existsSync, promises as fs } from 'fs';
 import path from 'path';
 import { n8nDocumentationToolsFinal } from './tools';
-import { UIAppRegistry } from './ui';
 import { n8nManagementTools } from './tools-n8n-manager';
 import { makeToolsN8nFriendly } from './tools-n8n-friendly';
 import { getWorkflowExampleString } from './workflow-examples';
@@ -238,12 +235,10 @@ export class N8NDocumentationMCPServer {
      {
        capabilities: {
          tools: {},
-          resources: {},
        },
      }
    );

-    UIAppRegistry.load();
    this.setupHandlers();
  }

@@ -568,7 +563,6 @@ export class N8NDocumentationMCPServer {
        protocolVersion: negotiationResult.version,
        capabilities: {
          tools: {},
-          resources: {},
        },
        serverInfo: {
          name: 'n8n-documentation-mcp',
@@ -651,7 +645,6 @@ export class N8NDocumentationMCPServer {
        });
      });
      
-      UIAppRegistry.injectToolMeta(tools);
      return { tools };
    });

@@ -781,7 +774,7 @@ export class N8NDocumentationMCPServer {
        if (name.startsWith('validate_') && structuredContent !== null) {
          mcpResponse.structuredContent = structuredContent;
        }
-
+        
        return mcpResponse;
      } catch (error) {
        logger.error(`Error executing tool ${name}`, error);
@@ -833,46 +826,6 @@ export class N8NDocumentationMCPServer {
        };
      }
    });
-
-    // Handle ListResources for UI apps
-    this.server.setRequestHandler(ListResourcesRequestSchema, async () => {
-      const apps = UIAppRegistry.getAllApps();
-      return {
-        resources: apps
-          .filter(app => app.html !== null)
-          .map(app => ({
-            uri: app.config.uri,
-            name: app.config.displayName,
-            description: app.config.description,
-            mimeType: app.config.mimeType,
-          })),
-      };
-    });
-
-    // Handle ReadResource for UI apps
-    this.server.setRequestHandler(ReadResourceRequestSchema, async (request) => {
-      const uri = request.params.uri;
-      // Parse ui://n8n-mcp/{id} pattern
-      const match = uri.match(/^ui:\/\/n8n-mcp\/(.+)$/);
-      if (!match) {
-        throw new Error(`Unknown resource URI: ${uri}`);
-      }
-
-      const app = UIAppRegistry.getAppById(match[1]);
-      if (!app || !app.html) {
-        throw new Error(`UI app not found or not built: ${match[1]}`);
-      }
-
-      return {
-        contents: [
-          {
-            uri: app.config.uri,
-            mimeType: app.config.mimeType,
-            text: app.html,
-          },
-        ],
-      };
-    });
  }

  /**
--- a/src/mcp/ui/app-configs.ts
+++ b/src/mcp/ui/app-configs.ts
@@ -1,32 +0,0 @@
-import type { UIAppConfig } from './types';
-
-export const UI_APP_CONFIGS: UIAppConfig[] = [
-  {
-    id: 'operation-result',
-    displayName: 'Operation Result',
-    description: 'Visual summary of workflow operations (create, update, delete, test)',
-    uri: 'ui://n8n-mcp/operation-result',
-    mimeType: 'text/html',
-    toolPatterns: [
-      'n8n_create_workflow',
-      'n8n_update_full_workflow',
-      'n8n_update_partial_workflow',
-      'n8n_delete_workflow',
-      'n8n_test_workflow',
-      'n8n_autofix_workflow',
-      'n8n_deploy_template',
-    ],
-  },
-  {
-    id: 'validation-summary',
-    displayName: 'Validation Summary',
-    description: 'Visual summary of node and workflow validation results',
-    uri: 'ui://n8n-mcp/validation-summary',
-    mimeType: 'text/html',
-    toolPatterns: [
-      'validate_node',
-      'validate_workflow',
-      'n8n_validate_workflow',
-    ],
-  },
-];
--- a/src/mcp/ui/index.ts
+++ b/src/mcp/ui/index.ts
@@ -1,3 +0,0 @@
-export type { UIAppConfig, UIMetadata, UIAppEntry } from './types';
-export { UI_APP_CONFIGS } from './app-configs';
-export { UIAppRegistry } from './registry';
--- a/src/mcp/ui/registry.ts
+++ b/src/mcp/ui/registry.ts
@@ -1,84 +0,0 @@
-import { existsSync, readFileSync } from 'fs';
-import path from 'path';
-import { logger } from '../../utils/logger';
-import type { UIAppConfig, UIAppEntry } from './types';
-import { UI_APP_CONFIGS } from './app-configs';
-
-export class UIAppRegistry {
-  private static entries: Map<string, UIAppEntry> = new Map();
-  private static toolIndex: Map<string, UIAppEntry> = new Map();
-  private static loaded = false;
-
-  static load(): void {
-    // Resolve dist directory relative to package root
-    // In production: package-root/ui-apps/dist/
-    // __dirname will be src/mcp/ui or dist/mcp/ui
-    const packageRoot = path.resolve(__dirname, '..', '..', '..');
-    const distDir = path.join(packageRoot, 'ui-apps', 'dist');
-
-    this.entries.clear();
-    this.toolIndex.clear();
-
-    for (const config of UI_APP_CONFIGS) {
-      let html: string | null = null;
-      const htmlPath = path.join(distDir, config.id, 'index.html');
-
-      if (existsSync(htmlPath)) {
-        try {
-          html = readFileSync(htmlPath, 'utf-8');
-          logger.info(`Loaded UI app: ${config.id}`);
-        } catch (err) {
-          logger.warn(`Failed to read UI app HTML: ${config.id}`, err);
-        }
-      }
-
-      const entry: UIAppEntry = { config, html };
-      this.entries.set(config.id, entry);
-
-      // Build tool -> entry index
-      for (const pattern of config.toolPatterns) {
-        this.toolIndex.set(pattern, entry);
-      }
-    }
-
-    this.loaded = true;
-    logger.info(`UI App Registry loaded: ${this.entries.size} apps, ${this.toolIndex.size} tool mappings`);
-  }
-
-  static getAppForTool(toolName: string): UIAppEntry | null {
-    if (!this.loaded) return null;
-    return this.toolIndex.get(toolName) ?? null;
-  }
-
-  static getAppById(id: string): UIAppEntry | null {
-    if (!this.loaded) return null;
-    return this.entries.get(id) ?? null;
-  }
-
-  static getAllApps(): UIAppEntry[] {
-    if (!this.loaded) return [];
-    return Array.from(this.entries.values());
-  }
-
-  /**
-   * Enrich tool definitions with _meta.ui.resourceUri for tools that have
-   * a matching UI app. Per MCP ext-apps spec, this goes on the tool
-   * definition (tools/list), not the tool call response.
-   */
-  static injectToolMeta(tools: Array<{ name: string; [key: string]: any }>): void {
-    if (!this.loaded) return;
-    for (const tool of tools) {
-      const entry = this.toolIndex.get(tool.name);
-      if (entry && entry.html) {
-        tool._meta = { ui: { resourceUri: entry.config.uri } };
-      }
-    }
-  }
-
-  /** Reset registry state. Intended for testing only. */
-  static reset(): void {
-    this.entries.clear();
-    this.toolIndex.clear();
-    this.loaded = false;
-  }
-}
--- a/src/mcp/ui/types.ts
+++ b/src/mcp/ui/types.ts
@@ -1,23 +0,0 @@
-/**
- * MCP Apps UI type definitions
- */
-
-export interface UIAppConfig {
-  id: string;
-  displayName: string;
-  description: string;
-  uri: string;
-  mimeType: string;
-  toolPatterns: string[];
-}
-
-export interface UIMetadata {
-  ui: {
-    resourceUri: string;
-  };
-}
-
-export interface UIAppEntry {
-  config: UIAppConfig;
-  html: string | null;
-}
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -44,11 +44,6 @@ export interface ToolDefinition {
  };
  /** Tool behavior hints for AI assistants */
  annotations?: ToolAnnotations;
-  _meta?: {
-    ui?: {
-      resourceUri?: string;
-    };
-  };
 }

 export interface ResourceDefinition {
--- a/tests/unit/mcp/ui/app-configs.test.ts
+++ b/tests/unit/mcp/ui/app-configs.test.ts
@@ -1,110 +0,0 @@
-import { describe, it, expect } from 'vitest';
-import { UI_APP_CONFIGS } from '@/mcp/ui/app-configs';
-
-describe('UI_APP_CONFIGS', () => {
-  it('should have all required fields for every config', () => {
-    for (const config of UI_APP_CONFIGS) {
-      expect(config.id).toBeDefined();
-      expect(typeof config.id).toBe('string');
-      expect(config.id.length).toBeGreaterThan(0);
-
-      expect(config.displayName).toBeDefined();
-      expect(typeof config.displayName).toBe('string');
-      expect(config.displayName.length).toBeGreaterThan(0);
-
-      expect(config.description).toBeDefined();
-      expect(typeof config.description).toBe('string');
-      expect(config.description.length).toBeGreaterThan(0);
-
-      expect(config.uri).toBeDefined();
-      expect(typeof config.uri).toBe('string');
-
-      expect(config.mimeType).toBeDefined();
-      expect(typeof config.mimeType).toBe('string');
-
-      expect(config.toolPatterns).toBeDefined();
-      expect(Array.isArray(config.toolPatterns)).toBe(true);
-    }
-  });
-
-  it('should have URIs following ui://n8n-mcp/{id} pattern', () => {
-    for (const config of UI_APP_CONFIGS) {
-      expect(config.uri).toBe(`ui://n8n-mcp/${config.id}`);
-    }
-  });
-
-  it('should have unique IDs', () => {
-    const ids = UI_APP_CONFIGS.map(c => c.id);
-    const uniqueIds = new Set(ids);
-    expect(uniqueIds.size).toBe(ids.length);
-  });
-
-  it('should have non-empty toolPatterns arrays', () => {
-    for (const config of UI_APP_CONFIGS) {
-      expect(config.toolPatterns.length).toBeGreaterThan(0);
-      for (const pattern of config.toolPatterns) {
-        expect(typeof pattern).toBe('string');
-        expect(pattern.length).toBeGreaterThan(0);
-      }
-    }
-  });
-
-  it('should not have duplicate tool patterns across configs', () => {
-    const allPatterns: string[] = [];
-    for (const config of UI_APP_CONFIGS) {
-      allPatterns.push(...config.toolPatterns);
-    }
-    const uniquePatterns = new Set(allPatterns);
-    expect(uniquePatterns.size).toBe(allPatterns.length);
-  });
-
-  it('should not have duplicate tool patterns within a single config', () => {
-    for (const config of UI_APP_CONFIGS) {
-      const unique = new Set(config.toolPatterns);
-      expect(unique.size).toBe(config.toolPatterns.length);
-    }
-  });
-
-  it('should have consistent mimeType of text/html', () => {
-    for (const config of UI_APP_CONFIGS) {
-      expect(config.mimeType).toBe('text/html');
-    }
-  });
-
-  it('should have URIs that start with the ui://n8n-mcp/ scheme', () => {
-    for (const config of UI_APP_CONFIGS) {
-      expect(config.uri).toMatch(/^ui:\/\/n8n-mcp\//);
-    }
-  });
-
-  // Regression: verify expected configs are present
-  it('should contain the operation-result config', () => {
-    const config = UI_APP_CONFIGS.find(c => c.id === 'operation-result');
-    expect(config).toBeDefined();
-    expect(config!.displayName).toBe('Operation Result');
-    expect(config!.toolPatterns).toContain('n8n_create_workflow');
-    expect(config!.toolPatterns).toContain('n8n_update_full_workflow');
-    expect(config!.toolPatterns).toContain('n8n_delete_workflow');
-    expect(config!.toolPatterns).toContain('n8n_test_workflow');
-    expect(config!.toolPatterns).toContain('n8n_deploy_template');
-  });
-
-  it('should contain the validation-summary config', () => {
-    const config = UI_APP_CONFIGS.find(c => c.id === 'validation-summary');
-    expect(config).toBeDefined();
-    expect(config!.displayName).toBe('Validation Summary');
-    expect(config!.toolPatterns).toContain('validate_node');
-    expect(config!.toolPatterns).toContain('validate_workflow');
-    expect(config!.toolPatterns).toContain('n8n_validate_workflow');
-  });
-
-  it('should have exactly 2 configs', () => {
-    expect(UI_APP_CONFIGS.length).toBe(2);
-  });
-
-  it('should have IDs that are valid URI path segments (no spaces or special chars)', () => {
-    for (const config of UI_APP_CONFIGS) {
-      expect(config.id).toMatch(/^[a-z0-9-]+$/);
-    }
-  });
-});
--- a/tests/unit/mcp/ui/meta-injection.test.ts
+++ b/tests/unit/mcp/ui/meta-injection.test.ts
@@ -1,145 +0,0 @@
-import { describe, it, expect, vi, beforeEach } from 'vitest';
-import { UIAppRegistry } from '@/mcp/ui/registry';
-
-vi.mock('fs', () => ({
-  existsSync: vi.fn(),
-  readFileSync: vi.fn(),
-}));
-
-import { existsSync, readFileSync } from 'fs';
-
-const mockExistsSync = vi.mocked(existsSync);
-const mockReadFileSync = vi.mocked(readFileSync);
-
-describe('UI Meta Injection on Tool Definitions', () => {
-  beforeEach(() => {
-    vi.clearAllMocks();
-    UIAppRegistry.reset();
-  });
-
-  describe('when HTML is loaded', () => {
-    beforeEach(() => {
-      mockExistsSync.mockReturnValue(true);
-      mockReadFileSync.mockReturnValue('<html>ui content</html>');
-      UIAppRegistry.load();
-    });
-
-    it('should add _meta.ui.resourceUri to matching tool definitions', () => {
-      const tools: any[] = [
-        { name: 'n8n_create_workflow', description: 'Create workflow', inputSchema: { type: 'object', properties: {} } },
-      ];
-
-      UIAppRegistry.injectToolMeta(tools);
-
-      expect(tools[0]._meta).toBeDefined();
-      expect(tools[0]._meta.ui.resourceUri).toBe('ui://n8n-mcp/operation-result');
-    });
-
-    it('should add _meta.ui.resourceUri to validation tool definitions', () => {
-      const tools: any[] = [
-        { name: 'validate_workflow', description: 'Validate', inputSchema: { type: 'object', properties: {} } },
-      ];
-
-      UIAppRegistry.injectToolMeta(tools);
-
-      expect(tools[0]._meta).toBeDefined();
-      expect(tools[0]._meta.ui.resourceUri).toBe('ui://n8n-mcp/validation-summary');
-    });
-
-    it('should NOT add _meta to non-matching tool definitions', () => {
-      const tools: any[] = [
-        { name: 'get_node_info', description: 'Get info', inputSchema: { type: 'object', properties: {} } },
-      ];
-
-      UIAppRegistry.injectToolMeta(tools);
-
-      expect(tools[0]._meta).toBeUndefined();
-    });
-
-    it('should inject _meta on matching tools and skip non-matching in a mixed list', () => {
-      const tools: any[] = [
-        { name: 'n8n_create_workflow', description: 'Create', inputSchema: { type: 'object', properties: {} } },
-        { name: 'get_node_info', description: 'Info', inputSchema: { type: 'object', properties: {} } },
-        { name: 'validate_node', description: 'Validate', inputSchema: { type: 'object', properties: {} } },
-      ];
-
-      UIAppRegistry.injectToolMeta(tools);
-
-      expect(tools[0]._meta).toBeDefined();
-      expect(tools[0]._meta.ui.resourceUri).toBe('ui://n8n-mcp/operation-result');
-      expect(tools[1]._meta).toBeUndefined();
-      expect(tools[2]._meta).toBeDefined();
-      expect(tools[2]._meta.ui.resourceUri).toBe('ui://n8n-mcp/validation-summary');
-    });
-
-    it('should produce _meta with exact shape { ui: { resourceUri: string } }', () => {
-      const tools: any[] = [
-        { name: 'n8n_create_workflow', description: 'Create', inputSchema: { type: 'object', properties: {} } },
-      ];
-
-      UIAppRegistry.injectToolMeta(tools);
-
-      expect(tools[0]._meta).toEqual({
-        ui: {
-          resourceUri: 'ui://n8n-mcp/operation-result',
-        },
-      });
-      expect(Object.keys(tools[0]._meta)).toEqual(['ui']);
-      expect(Object.keys(tools[0]._meta.ui)).toEqual(['resourceUri']);
-      expect(typeof tools[0]._meta.ui.resourceUri).toBe('string');
-    });
-  });
-
-  describe('when HTML is not loaded', () => {
-    beforeEach(() => {
-      mockExistsSync.mockReturnValue(false);
-      UIAppRegistry.load();
-    });
-
-    it('should NOT add _meta even for matching tools', () => {
-      const tools: any[] = [
-        { name: 'n8n_create_workflow', description: 'Create', inputSchema: { type: 'object', properties: {} } },
-      ];
-
-      UIAppRegistry.injectToolMeta(tools);
-
-      expect(tools[0]._meta).toBeUndefined();
-    });
-
-    it('should NOT add _meta for validation tools without HTML', () => {
-      const tools: any[] = [
-        { name: 'validate_node', description: 'Validate', inputSchema: { type: 'object', properties: {} } },
-      ];
-
-      UIAppRegistry.injectToolMeta(tools);
-
-      expect(tools[0]._meta).toBeUndefined();
-    });
-  });
-
-  describe('when registry has not been loaded at all', () => {
-    it('should NOT add _meta because registry is not loaded', () => {
-      const tools: any[] = [
-        { name: 'n8n_create_workflow', description: 'Create', inputSchema: { type: 'object', properties: {} } },
-      ];
-
-      UIAppRegistry.injectToolMeta(tools);
-
-      expect(tools[0]._meta).toBeUndefined();
-    });
-  });
-
-  describe('empty tool list', () => {
-    beforeEach(() => {
-      mockExistsSync.mockReturnValue(true);
-      mockReadFileSync.mockReturnValue('<html>ui</html>');
-      UIAppRegistry.load();
-    });
-
-    it('should handle an empty tools array without error', () => {
-      const tools: any[] = [];
-      UIAppRegistry.injectToolMeta(tools);
-      expect(tools.length).toBe(0);
-    });
-  });
-});
--- a/tests/unit/mcp/ui/registry.test.ts
+++ b/tests/unit/mcp/ui/registry.test.ts
@@ -1,374 +0,0 @@
-import { describe, it, expect, vi, beforeEach } from 'vitest';
-import { UIAppRegistry } from '@/mcp/ui/registry';
-import { UI_APP_CONFIGS } from '@/mcp/ui/app-configs';
-
-vi.mock('fs', () => ({
-  existsSync: vi.fn(),
-  readFileSync: vi.fn(),
-}));
-
-import { existsSync, readFileSync } from 'fs';
-
-const mockExistsSync = vi.mocked(existsSync);
-const mockReadFileSync = vi.mocked(readFileSync);
-
-describe('UIAppRegistry', () => {
-  beforeEach(() => {
-    vi.clearAllMocks();
-    UIAppRegistry.reset();
-  });
-
-  describe('load()', () => {
-    it('should load HTML files when dist directory exists', () => {
-      mockExistsSync.mockReturnValue(true);
-      mockReadFileSync.mockReturnValue('<html>test</html>');
-
-      UIAppRegistry.load();
-
-      const apps = UIAppRegistry.getAllApps();
-      expect(apps.length).toBe(UI_APP_CONFIGS.length);
-      for (const app of apps) {
-        expect(app.html).toBe('<html>test</html>');
-      }
-    });
-
-    it('should handle missing dist directory gracefully', () => {
-      mockExistsSync.mockReturnValue(false);
-
-      UIAppRegistry.load();
-
-      const apps = UIAppRegistry.getAllApps();
-      expect(apps.length).toBe(UI_APP_CONFIGS.length);
-      for (const app of apps) {
-        expect(app.html).toBeNull();
-      }
-    });
-
-    it('should handle read errors gracefully', () => {
-      mockExistsSync.mockReturnValue(true);
-      mockReadFileSync.mockImplementation(() => {
-        throw new Error('Permission denied');
-      });
-
-      UIAppRegistry.load();
-
-      const apps = UIAppRegistry.getAllApps();
-      expect(apps.length).toBe(UI_APP_CONFIGS.length);
-      for (const app of apps) {
-        expect(app.html).toBeNull();
-      }
-    });
-
-    it('should set loaded flag so getters work', () => {
-      expect(UIAppRegistry.getAllApps()).toEqual([]);
-      expect(UIAppRegistry.getAppById('operation-result')).toBeNull();
-      expect(UIAppRegistry.getAppForTool('n8n_create_workflow')).toBeNull();
-
-      mockExistsSync.mockReturnValue(false);
-      UIAppRegistry.load();
-
-      expect(UIAppRegistry.getAllApps().length).toBeGreaterThan(0);
-    });
-
-    it('should replace previous entries when called twice', () => {
-      // First load: files exist
-      mockExistsSync.mockReturnValue(true);
-      mockReadFileSync.mockReturnValue('<html>first</html>');
-      UIAppRegistry.load();
-
-      expect(UIAppRegistry.getAppById('operation-result')!.html).toBe('<html>first</html>');
-
-      // Second load: files missing
-      mockExistsSync.mockReturnValue(false);
-      UIAppRegistry.load();
-
-      expect(UIAppRegistry.getAppById('operation-result')!.html).toBeNull();
-    });
-
-    it('should handle empty HTML file content', () => {
-      mockExistsSync.mockReturnValue(true);
-      mockReadFileSync.mockReturnValue('');
-
-      UIAppRegistry.load();
-
-      const app = UIAppRegistry.getAppById('operation-result');
-      expect(app).not.toBeNull();
-      // Empty string is still a string, not null
-      expect(app!.html).toBe('');
-    });
-
-    it('should build the correct number of tool index entries', () => {
-      mockExistsSync.mockReturnValue(true);
-      mockReadFileSync.mockReturnValue('<html>app</html>');
-      UIAppRegistry.load();
-
-      // Every tool pattern from every config should be resolvable
-      for (const config of UI_APP_CONFIGS) {
-        for (const pattern of config.toolPatterns) {
-          const entry = UIAppRegistry.getAppForTool(pattern);
-          expect(entry).not.toBeNull();
-          expect(entry!.config.id).toBe(config.id);
-        }
-      }
-    });
-
-    it('should call existsSync for each config', () => {
-      mockExistsSync.mockReturnValue(false);
-      UIAppRegistry.load();
-
-      expect(mockExistsSync).toHaveBeenCalledTimes(UI_APP_CONFIGS.length);
-    });
-
-    it('should only call readFileSync when existsSync returns true', () => {
-      mockExistsSync.mockReturnValue(false);
-      UIAppRegistry.load();
-
-      expect(mockReadFileSync).not.toHaveBeenCalled();
-    });
-  });
-
-  describe('getAppForTool()', () => {
-    it('should return null before load() is called', () => {
-      const entry = UIAppRegistry.getAppForTool('n8n_create_workflow');
-      expect(entry).toBeNull();
-    });
-
-    describe('after loading', () => {
-      beforeEach(() => {
-        mockExistsSync.mockReturnValue(true);
-        mockReadFileSync.mockReturnValue('<html>loaded</html>');
-        UIAppRegistry.load();
-      });
-
-      it('should return correct entry for known tool patterns', () => {
-        const entry = UIAppRegistry.getAppForTool('n8n_create_workflow');
-        expect(entry).not.toBeNull();
-        expect(entry!.config.id).toBe('operation-result');
-      });
-
-      it('should return correct entry for validation tools', () => {
-        const entry = UIAppRegistry.getAppForTool('validate_node');
-        expect(entry).not.toBeNull();
-        expect(entry!.config.id).toBe('validation-summary');
-      });
-
-      it('should return null for unknown tools', () => {
-        const entry = UIAppRegistry.getAppForTool('unknown_tool');
-        expect(entry).toBeNull();
-      });
-
-      it('should return null for empty string tool name', () => {
-        const entry = UIAppRegistry.getAppForTool('');
-        expect(entry).toBeNull();
-      });
-
-      // Regression: verify specific tools ARE mapped so config changes break the test
-      it('should map n8n_create_workflow to operation-result', () => {
-        expect(UIAppRegistry.getAppForTool('n8n_create_workflow')!.config.id).toBe('operation-result');
-      });
-
-      it('should map n8n_update_full_workflow to operation-result', () => {
-        expect(UIAppRegistry.getAppForTool('n8n_update_full_workflow')!.config.id).toBe('operation-result');
-      });
-
-      it('should map n8n_update_partial_workflow to operation-result', () => {
-        expect(UIAppRegistry.getAppForTool('n8n_update_partial_workflow')!.config.id).toBe('operation-result');
-      });
-
-      it('should map n8n_delete_workflow to operation-result', () => {
-        expect(UIAppRegistry.getAppForTool('n8n_delete_workflow')!.config.id).toBe('operation-result');
-      });
-
-      it('should map n8n_test_workflow to operation-result', () => {
-        expect(UIAppRegistry.getAppForTool('n8n_test_workflow')!.config.id).toBe('operation-result');
-      });
-
-      it('should map n8n_autofix_workflow to operation-result', () => {
-        expect(UIAppRegistry.getAppForTool('n8n_autofix_workflow')!.config.id).toBe('operation-result');
-      });
-
-      it('should map n8n_deploy_template to operation-result', () => {
-        expect(UIAppRegistry.getAppForTool('n8n_deploy_template')!.config.id).toBe('operation-result');
-      });
-
-      it('should map validate_node to validation-summary', () => {
-        expect(UIAppRegistry.getAppForTool('validate_node')!.config.id).toBe('validation-summary');
-      });
-
-      it('should map validate_workflow to validation-summary', () => {
-        expect(UIAppRegistry.getAppForTool('validate_workflow')!.config.id).toBe('validation-summary');
-      });
-
-      it('should map n8n_validate_workflow to validation-summary', () => {
-        expect(UIAppRegistry.getAppForTool('n8n_validate_workflow')!.config.id).toBe('validation-summary');
-      });
-    });
-  });
-
-  describe('getAppById()', () => {
-    it('should return null before load() is called', () => {
-      const entry = UIAppRegistry.getAppById('operation-result');
-      expect(entry).toBeNull();
-    });
-
-    describe('after loading', () => {
-      beforeEach(() => {
-        mockExistsSync.mockReturnValue(true);
-        mockReadFileSync.mockReturnValue('<html>app</html>');
-        UIAppRegistry.load();
-      });
-
-      it('should return correct entry for operation-result', () => {
-        const entry = UIAppRegistry.getAppById('operation-result');
-        expect(entry).not.toBeNull();
-        expect(entry!.config.displayName).toBe('Operation Result');
-        expect(entry!.html).toBe('<html>app</html>');
-      });
-
-      it('should return correct entry for validation-summary', () => {
-        const entry = UIAppRegistry.getAppById('validation-summary');
-        expect(entry).not.toBeNull();
-        expect(entry!.config.displayName).toBe('Validation Summary');
-      });
-
-      it('should return null for unknown id', () => {
-        const entry = UIAppRegistry.getAppById('nonexistent');
-        expect(entry).toBeNull();
-      });
-
-      it('should return null for empty string id', () => {
-        const entry = UIAppRegistry.getAppById('');
-        expect(entry).toBeNull();
-      });
-    });
-  });
-
-  describe('getAllApps()', () => {
-    it('should return empty array before load() is called', () => {
-      const apps = UIAppRegistry.getAllApps();
-      expect(apps).toEqual([]);
-    });
-
-    it('should return all entries after load', () => {
-      mockExistsSync.mockReturnValue(false);
-      UIAppRegistry.load();
-
-      const apps = UIAppRegistry.getAllApps();
-      expect(apps.length).toBe(UI_APP_CONFIGS.length);
-      expect(apps.map(a => a.config.id)).toContain('operation-result');
-      expect(apps.map(a => a.config.id)).toContain('validation-summary');
-    });
-
-    it('should include entries with null html when dist is missing', () => {
-      mockExistsSync.mockReturnValue(false);
-      UIAppRegistry.load();
-
-      const apps = UIAppRegistry.getAllApps();
-      for (const app of apps) {
-        expect(app.html).toBeNull();
-      }
-      // Entries are still present even with null html
-      expect(apps.length).toBe(UI_APP_CONFIGS.length);
-    });
-
-    it('should return entries with full config objects', () => {
-      mockExistsSync.mockReturnValue(false);
-      UIAppRegistry.load();
-
-      for (const app of UIAppRegistry.getAllApps()) {
-        expect(app.config).toBeDefined();
-        expect(app.config.id).toBeDefined();
-        expect(app.config.displayName).toBeDefined();
-        expect(app.config.uri).toBeDefined();
-        expect(app.config.mimeType).toBeDefined();
-        expect(app.config.toolPatterns).toBeDefined();
-        expect(app.config.description).toBeDefined();
-      }
-    });
-  });
-
-  describe('injectToolMeta()', () => {
-    it('should not modify tools before load() is called', () => {
-      const tools: any[] = [
-        { name: 'n8n_create_workflow', description: 'Create', inputSchema: { type: 'object', properties: {} } },
-      ];
-      UIAppRegistry.injectToolMeta(tools);
-      expect(tools[0]._meta).toBeUndefined();
-    });
-
-    describe('after loading with HTML', () => {
-      beforeEach(() => {
-        mockExistsSync.mockReturnValue(true);
-        mockReadFileSync.mockReturnValue('<html>loaded</html>');
-        UIAppRegistry.load();
-      });
-
-      it('should set _meta.ui.resourceUri on matching operation tools', () => {
-        const tools: any[] = [
-          { name: 'n8n_create_workflow', description: 'Create', inputSchema: { type: 'object', properties: {} } },
-        ];
-        UIAppRegistry.injectToolMeta(tools);
-        expect(tools[0]._meta).toEqual({ ui: { resourceUri: 'ui://n8n-mcp/operation-result' } });
-      });
-
-      it('should set _meta.ui.resourceUri on matching validation tools', () => {
-        const tools: any[] = [
-          { name: 'validate_node', description: 'Validate', inputSchema: { type: 'object', properties: {} } },
-        ];
-        UIAppRegistry.injectToolMeta(tools);
-        expect(tools[0]._meta).toEqual({ ui: { resourceUri: 'ui://n8n-mcp/validation-summary' } });
-      });
-
-      it('should not set _meta on tools without a matching UI app', () => {
-        const tools: any[] = [
-          { name: 'search_nodes', description: 'Search', inputSchema: { type: 'object', properties: {} } },
-        ];
-        UIAppRegistry.injectToolMeta(tools);
-        expect(tools[0]._meta).toBeUndefined();
-      });
-
-      it('should handle a mix of matching and non-matching tools', () => {
-        const tools: any[] = [
-          { name: 'n8n_delete_workflow', description: 'Delete', inputSchema: { type: 'object', properties: {} } },
-          { name: 'get_node_essentials', description: 'Essentials', inputSchema: { type: 'object', properties: {} } },
-          { name: 'validate_workflow', description: 'Validate', inputSchema: { type: 'object', properties: {} } },
-        ];
-        UIAppRegistry.injectToolMeta(tools);
-        expect(tools[0]._meta?.ui?.resourceUri).toBe('ui://n8n-mcp/operation-result');
-        expect(tools[1]._meta).toBeUndefined();
-        expect(tools[2]._meta?.ui?.resourceUri).toBe('ui://n8n-mcp/validation-summary');
-      });
-    });
-
-    describe('after loading without HTML', () => {
-      beforeEach(() => {
-        mockExistsSync.mockReturnValue(false);
-        UIAppRegistry.load();
-      });
-
-      it('should not set _meta when HTML is not available', () => {
-        const tools: any[] = [
-          { name: 'n8n_create_workflow', description: 'Create', inputSchema: { type: 'object', properties: {} } },
-        ];
-        UIAppRegistry.injectToolMeta(tools);
-        expect(tools[0]._meta).toBeUndefined();
-      });
-    });
-  });
-
-  describe('reset()', () => {
-    it('should clear loaded state so getters return defaults', () => {
-      mockExistsSync.mockReturnValue(true);
-      mockReadFileSync.mockReturnValue('<html>x</html>');
-      UIAppRegistry.load();
-
-      expect(UIAppRegistry.getAllApps().length).toBeGreaterThan(0);
-
-      UIAppRegistry.reset();
-
-      expect(UIAppRegistry.getAllApps()).toEqual([]);
-      expect(UIAppRegistry.getAppById('operation-result')).toBeNull();
-      expect(UIAppRegistry.getAppForTool('n8n_create_workflow')).toBeNull();
-    });
-  });
-});
--- a/ui-apps/package-lock.json
+++ b/ui-apps/package-lock.json
--- a/ui-apps/package.json
+++ b/ui-apps/package.json
@@ -1,26 +0,0 @@
-{
-  "name": "n8n-mcp-ui-apps",
-  "version": "1.0.0",
-  "private": true,
-  "type": "module",
-  "scripts": {
-    "dev": "vite",
-    "build": "APP_NAME=operation-result vite build && APP_NAME=validation-summary vite build",
-    "build:operation-result": "APP_NAME=operation-result vite build",
-    "build:validation-summary": "APP_NAME=validation-summary vite build",
-    "preview": "vite preview"
-  },
-  "dependencies": {
-    "@modelcontextprotocol/ext-apps": "^1.0.1",
-    "react": "^19.0.0",
-    "react-dom": "^19.0.0"
-  },
-  "devDependencies": {
-    "@types/react": "^19.0.0",
-    "@types/react-dom": "^19.0.0",
-    "@vitejs/plugin-react": "^4.3.0",
-    "typescript": "^5.8.0",
-    "vite": "^6.0.0",
-    "vite-plugin-singlefile": "^2.0.0"
-  }
-}
--- a/ui-apps/src/apps/operation-result/App.tsx
+++ b/ui-apps/src/apps/operation-result/App.tsx
@@ -1,84 +0,0 @@
-import React from 'react';
-import '@shared/styles/theme.css';
-import { Card, Badge, Expandable } from '@shared/components';
-import { useToolData } from '@shared/hooks/useToolData';
-import type { OperationResultData } from '@shared/types';
-
-export default function App() {
-  const data = useToolData<OperationResultData>();
-
-  if (!data) {
-    return <div style={{ padding: '16px', color: 'var(--n8n-text-muted)' }}>Loading...</div>;
-  }
-
-  const isSuccess = data.status === 'success';
-
-  return (
-    <div style={{ maxWidth: '480px' }}>
-      <div style={{ display: 'flex', alignItems: 'center', gap: '12px', marginBottom: '16px' }}>
-        <Badge variant={isSuccess ? 'success' : 'error'}>
-          {isSuccess ? 'Success' : 'Error'}
-        </Badge>
-        <h2 style={{ fontSize: '16px', fontWeight: 600 }}>{data.operation}</h2>
-      </div>
-
-      <Card title="Workflow">
-        <div style={{ fontSize: '14px' }}>
-          {data.workflowName && <div><strong>Name:</strong> {data.workflowName}</div>}
-          {data.workflowId && <div><strong>ID:</strong> {data.workflowId}</div>}
-          {data.timestamp && (
-            <div style={{ color: 'var(--n8n-text-muted)', fontSize: '12px', marginTop: '4px' }}>
-              {data.timestamp}
-            </div>
-          )}
-        </div>
-      </Card>
-
-      {data.message && (
-        <Card>
-          <div style={{ fontSize: '13px' }}>{data.message}</div>
-        </Card>
-      )}
-
-      {data.changes && (
-        <>
-          {data.changes.nodesAdded && data.changes.nodesAdded.length > 0 && (
-            <Expandable title="Nodes Added" count={data.changes.nodesAdded.length} defaultOpen>
-              <ul style={{ listStyle: 'none', fontSize: '13px' }}>
-                {data.changes.nodesAdded.map((node, i) => (
-                  <li key={i} style={{ padding: '4px 0', borderBottom: '1px solid var(--n8n-border)' }}>
-                    <span style={{ color: 'var(--n8n-success)' }}>+</span> {node}
-                  </li>
-                ))}
-              </ul>
-            </Expandable>
-          )}
-
-          {data.changes.nodesModified && data.changes.nodesModified.length > 0 && (
-            <Expandable title="Nodes Modified" count={data.changes.nodesModified.length}>
-              <ul style={{ listStyle: 'none', fontSize: '13px' }}>
-                {data.changes.nodesModified.map((node, i) => (
-                  <li key={i} style={{ padding: '4px 0', borderBottom: '1px solid var(--n8n-border)' }}>
-                    <span style={{ color: 'var(--n8n-warning)' }}>~</span> {node}
-                  </li>
-                ))}
-              </ul>
-            </Expandable>
-          )}
-
-          {data.changes.nodesRemoved && data.changes.nodesRemoved.length > 0 && (
-            <Expandable title="Nodes Removed" count={data.changes.nodesRemoved.length}>
-              <ul style={{ listStyle: 'none', fontSize: '13px' }}>
-                {data.changes.nodesRemoved.map((node, i) => (
-                  <li key={i} style={{ padding: '4px 0', borderBottom: '1px solid var(--n8n-border)' }}>
-                    <span style={{ color: 'var(--n8n-error)' }}>-</span> {node}
-                  </li>
-                ))}
-              </ul>
-            </Expandable>
-          )}
-        </>
-      )}
-    </div>
-  );
-}
--- a/ui-apps/src/apps/operation-result/index.html
+++ b/ui-apps/src/apps/operation-result/index.html
@@ -1,12 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Operation Result</title>
-  </head>
-  <body>
-    <div id="root"></div>
-    <script type="module" src="./main.tsx"></script>
-  </body>
-</html>
--- a/ui-apps/src/apps/operation-result/main.tsx
+++ b/ui-apps/src/apps/operation-result/main.tsx
@@ -1,8 +0,0 @@
-import React from 'react';
-import { createRoot } from 'react-dom/client';
-import App from './App';
-
-const root = document.getElementById('root');
-if (root) {
-  createRoot(root).render(<App />);
-}
--- a/ui-apps/src/apps/validation-summary/App.tsx
+++ b/ui-apps/src/apps/validation-summary/App.tsx
@@ -1,88 +0,0 @@
-import React from 'react';
-import '@shared/styles/theme.css';
-import { Card, Badge, Expandable } from '@shared/components';
-import { useToolData } from '@shared/hooks/useToolData';
-import type { ValidationSummaryData } from '@shared/types';
-
-export default function App() {
-  const data = useToolData<ValidationSummaryData>();
-
-  if (!data) {
-    return <div style={{ padding: '16px', color: 'var(--n8n-text-muted)' }}>Loading...</div>;
-  }
-
-  return (
-    <div style={{ maxWidth: '480px' }}>
-      <div style={{ display: 'flex', alignItems: 'center', gap: '12px', marginBottom: '16px' }}>
-        <Badge variant={data.valid ? 'success' : 'error'}>
-          {data.valid ? 'Valid' : 'Invalid'}
-        </Badge>
-        {data.displayName && (
-          <span style={{ fontSize: '14px', color: 'var(--n8n-text-muted)' }}>{data.displayName}</span>
-        )}
-      </div>
-
-      <Card>
-        <div style={{ display: 'flex', gap: '16px', fontSize: '13px' }}>
-          <div>
-            <span style={{ color: 'var(--n8n-error)' }}>{data.errorCount}</span> errors
-          </div>
-          <div>
-            <span style={{ color: 'var(--n8n-warning)' }}>{data.warningCount}</span> warnings
-          </div>
-        </div>
-      </Card>
-
-      {data.errors.length > 0 && (
-        <Expandable title="Errors" count={data.errors.length} defaultOpen>
-          {data.errors.map((err, i) => (
-            <div key={i} style={{
-              padding: '8px',
-              marginBottom: '6px',
-              background: 'var(--n8n-error-light)',
-              borderRadius: '4px',
-              fontSize: '12px',
-              color: 'var(--n8n-error)',
-            }}>
-              <div style={{ fontWeight: 600 }}>{err.type}</div>
-              {err.property && <div style={{ opacity: 0.8 }}>Property: {err.property}</div>}
-              <div>{err.message}</div>
-              {err.fix && (
-                <div style={{ marginTop: '4px', fontStyle: 'italic', opacity: 0.9 }}>Fix: {err.fix}</div>
-              )}
-            </div>
-          ))}
-        </Expandable>
-      )}
-
-      {data.warnings.length > 0 && (
-        <Expandable title="Warnings" count={data.warnings.length}>
-          {data.warnings.map((warn, i) => (
-            <div key={i} style={{
-              padding: '8px',
-              marginBottom: '6px',
-              background: 'var(--n8n-warning-light)',
-              borderRadius: '4px',
-              fontSize: '12px',
-              color: 'var(--n8n-warning)',
-            }}>
-              <div style={{ fontWeight: 600 }}>{warn.type}</div>
-              {warn.property && <div style={{ opacity: 0.8 }}>Property: {warn.property}</div>}
-              <div>{warn.message}</div>
-            </div>
-          ))}
-        </Expandable>
-      )}
-
-      {data.suggestions && data.suggestions.length > 0 && (
-        <Expandable title="Suggestions" count={data.suggestions.length}>
-          <ul style={{ paddingLeft: '16px', fontSize: '12px' }}>
-            {data.suggestions.map((suggestion, i) => (
-              <li key={i} style={{ padding: '2px 0', color: 'var(--n8n-info)' }}>{suggestion}</li>
-            ))}
-          </ul>
-        </Expandable>
-      )}
-    </div>
-  );
-}
--- a/ui-apps/src/apps/validation-summary/index.html
+++ b/ui-apps/src/apps/validation-summary/index.html
@@ -1,12 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Validation Summary</title>
-  </head>
-  <body>
-    <div id="root"></div>
-    <script type="module" src="./main.tsx"></script>
-  </body>
-</html>
--- a/ui-apps/src/apps/validation-summary/main.tsx
+++ b/ui-apps/src/apps/validation-summary/main.tsx
@@ -1,8 +0,0 @@
-import React from 'react';
-import { createRoot } from 'react-dom/client';
-import App from './App';
-
-const root = document.getElementById('root');
-if (root) {
-  createRoot(root).render(<App />);
-}
--- a/ui-apps/src/shared/components/Badge.tsx
+++ b/ui-apps/src/shared/components/Badge.tsx
@@ -1,32 +0,0 @@
-import React from 'react';
-
-type BadgeVariant = 'success' | 'warning' | 'error' | 'info';
-
-interface BadgeProps {
-  variant: BadgeVariant;
-  children: React.ReactNode;
-}
-
-const variantStyles: Record<BadgeVariant, { bg: string; color: string }> = {
-  success: { bg: 'var(--n8n-success-light)', color: 'var(--n8n-success)' },
-  warning: { bg: 'var(--n8n-warning-light)', color: 'var(--n8n-warning)' },
-  error: { bg: 'var(--n8n-error-light)', color: 'var(--n8n-error)' },
-  info: { bg: 'var(--n8n-info-light)', color: 'var(--n8n-info)' },
-};
-
-export function Badge({ variant, children }: BadgeProps) {
-  const style = variantStyles[variant];
-  return (
-    <span style={{
-      display: 'inline-block',
-      padding: '2px 10px',
-      borderRadius: '12px',
-      fontSize: '12px',
-      fontWeight: 600,
-      background: style.bg,
-      color: style.color,
-    }}>
-      {children}
-    </span>
-  );
-}
--- a/ui-apps/src/shared/components/Card.tsx
+++ b/ui-apps/src/shared/components/Card.tsx
@@ -1,25 +0,0 @@
-import React from 'react';
-
-interface CardProps {
-  title?: string;
-  children: React.ReactNode;
-}
-
-export function Card({ title, children }: CardProps) {
-  return (
-    <div style={{
-      background: 'var(--n8n-bg-card)',
-      border: '1px solid var(--n8n-border)',
-      borderRadius: 'var(--n8n-radius)',
-      padding: '16px',
-      marginBottom: '12px',
-    }}>
-      {title && (
-        <h3 style={{ marginBottom: '8px', fontSize: '14px', color: 'var(--n8n-text-muted)' }}>
-          {title}
-        </h3>
-      )}
-      {children}
-    </div>
-  );
-}
--- a/ui-apps/src/shared/components/Expandable.tsx
+++ b/ui-apps/src/shared/components/Expandable.tsx
@@ -1,36 +0,0 @@
-import React from 'react';
-
-interface ExpandableProps {
-  title: string;
-  count?: number;
-  defaultOpen?: boolean;
-  children: React.ReactNode;
-}
-
-export function Expandable({ title, count, defaultOpen = false, children }: ExpandableProps) {
-  return (
-    <details open={defaultOpen} style={{
-      marginBottom: '8px',
-      border: '1px solid var(--n8n-border)',
-      borderRadius: 'var(--n8n-radius)',
-      overflow: 'hidden',
-    }}>
-      <summary style={{
-        padding: '10px 14px',
-        cursor: 'pointer',
-        fontSize: '13px',
-        fontWeight: 500,
-        background: 'var(--n8n-bg-card)',
-        userSelect: 'none',
-      }}>
-        {title}
-        {count !== undefined && (
-          <span style={{ marginLeft: '8px', color: 'var(--n8n-text-muted)' }}>({count})</span>
-        )}
-      </summary>
-      <div style={{ padding: '12px 14px' }}>
-        {children}
-      </div>
-    </details>
-  );
-}
--- a/ui-apps/src/shared/components/index.ts
+++ b/ui-apps/src/shared/components/index.ts
@@ -1,3 +0,0 @@
-export { Card } from './Card';
-export { Badge } from './Badge';
-export { Expandable } from './Expandable';
--- a/ui-apps/src/shared/hooks/useToolData.ts
+++ b/ui-apps/src/shared/hooks/useToolData.ts
@@ -1,35 +0,0 @@
-import { useState, useEffect } from 'react';
-import { App } from '@modelcontextprotocol/ext-apps';
-
-export function useToolData<T>(): T | null {
-  const [data, setData] = useState<T | null>(null);
-
-  useEffect(() => {
-    const app = new App();
-
-    app.ontoolresult = (result: any) => {
-      // The host pushes tool result content; parse the first text item as JSON
-      if (result?.content) {
-        const textItem = Array.isArray(result.content)
-          ? result.content.find((c: any) => c.type === 'text')
-          : null;
-        if (textItem?.text) {
-          try {
-            setData(JSON.parse(textItem.text) as T);
-          } catch {
-            // Not JSON — use raw text as-is
-            setData(textItem.text as unknown as T);
-          }
-        }
-      }
-    };
-
-    app.connect();
-
-    return () => {
-      app.close();
-    };
-  }, []);
-
-  return data;
-}
--- a/ui-apps/src/shared/index.ts
+++ b/ui-apps/src/shared/index.ts
@@ -1,3 +0,0 @@
-export { Card, Badge, Expandable } from './components';
-export { useToolData } from './hooks/useToolData';
-export type { OperationResultData, ValidationSummaryData, ValidationError, ValidationWarning } from './types';
--- a/ui-apps/src/shared/styles/theme.css
+++ b/ui-apps/src/shared/styles/theme.css
@@ -1,32 +0,0 @@
-:root {
-  --n8n-primary: #ff6d5a;
-  --n8n-primary-light: #ff8a7a;
-  --n8n-success: #17bf79;
-  --n8n-success-light: #e8f9f0;
-  --n8n-warning: #f59e0b;
-  --n8n-warning-light: #fef3cd;
-  --n8n-error: #ef4444;
-  --n8n-error-light: #fee2e2;
-  --n8n-info: #3b82f6;
-  --n8n-info-light: #dbeafe;
-  --n8n-bg: #1a1a2e;
-  --n8n-bg-card: #252540;
-  --n8n-text: #e0e0e0;
-  --n8n-text-muted: #9ca3af;
-  --n8n-border: #374151;
-  --n8n-radius: 8px;
-  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
-}
-
-* {
-  margin: 0;
-  padding: 0;
-  box-sizing: border-box;
-}
-
-body {
-  background: var(--n8n-bg);
-  color: var(--n8n-text);
-  line-height: 1.5;
-  padding: 16px;
-}
--- a/ui-apps/src/shared/types.ts
+++ b/ui-apps/src/shared/types.ts
@@ -1,38 +0,0 @@
-export interface OperationResultData {
-  status: 'success' | 'error';
-  operation: string;
-  workflowName?: string;
-  workflowId?: string;
-  timestamp?: string;
-  message?: string;
-  changes?: {
-    nodesAdded?: string[];
-    nodesModified?: string[];
-    nodesRemoved?: string[];
-  };
-  details?: Record<string, unknown>;
-}
-
-export interface ValidationError {
-  type: string;
-  property?: string;
-  message: string;
-  fix?: string;
-}
-
-export interface ValidationWarning {
-  type: string;
-  property?: string;
-  message: string;
-}
-
-export interface ValidationSummaryData {
-  valid: boolean;
-  errorCount: number;
-  warningCount: number;
-  errors: ValidationError[];
-  warnings: ValidationWarning[];
-  suggestions?: string[];
-  nodeType?: string;
-  displayName?: string;
-}
--- a/ui-apps/tsconfig.json
+++ b/ui-apps/tsconfig.json
@@ -1,21 +0,0 @@
-{
-  "compilerOptions": {
-    "target": "ES2020",
-    "lib": ["ES2020", "DOM", "DOM.Iterable"],
-    "module": "ESNext",
-    "moduleResolution": "bundler",
-    "jsx": "react-jsx",
-    "strict": true,
-    "esModuleInterop": true,
-    "skipLibCheck": true,
-    "forceConsistentCasingInFileNames": true,
-    "resolveJsonModule": true,
-    "isolatedModules": true,
-    "noEmit": true,
-    "baseUrl": ".",
-    "paths": {
-      "@shared/*": ["src/shared/*"]
-    }
-  },
-  "include": ["src"]
-}
--- a/ui-apps/vite.config.ts
+++ b/ui-apps/vite.config.ts
@@ -1,21 +0,0 @@
-import { defineConfig } from 'vite';
-import react from '@vitejs/plugin-react';
-import { viteSingleFile } from 'vite-plugin-singlefile';
-import path from 'path';
-
-// App name is passed via environment variable for per-app builds
-const appName = process.env.APP_NAME || 'operation-result';
-
-export default defineConfig({
-  plugins: [react(), viteSingleFile()],
-  resolve: {
-    alias: {
-      '@shared': path.resolve(__dirname, 'src/shared'),
-    },
-  },
-  root: path.resolve(__dirname, 'src/apps', appName),
-  build: {
-    outDir: path.resolve(__dirname, 'dist', appName),
-    emptyOutDir: true,
-  },
-});