Merge pull request #201 from czlonkowski/fix/update-partial-workflow-operation

Summary
Fixed critical bug in n8n_update_partial_workflow where operations were using wrong property name
Changed from changes to updates for consistency with operation naming
Resolves issues where AI agents had to fall back to expensive full workflow updates
Fixes
Resolves update_partial_workflow is invalid #159 - update_partial_workflow is invalid
Resolves Partial Workflow Update returns error #168 - Partial Workflow Update returns error
Changes Made
Updated UpdateNodeOperation interface to use updates instead of changes
Updated UpdateConnectionOperation for consistency
Fixed implementation in workflow-diff-engine.ts
Updated Zod schema validation in handlers-workflow-diff.ts
Fixed documentation and examples
Updated all tests to use new property name
Test Plan
 Build passes (npm run build)
 Tests pass for workflow-diff-engine
 Manually tested with real workflow - updates work correctly
 Verified connections are preserved after updates
Before & After
Before: {type: "updateNode", nodeId: "123", changes: {...}} ❌ Failed
After: {type: "updateNode", nodeId: "123", updates: {...}} ✅ Works

README.md

@@ -2,11 +2,11 @@
 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![GitHub stars](https://img.shields.io/github/stars/czlonkowski/n8n-mcp?style=social)](https://github.com/czlonkowski/n8n-mcp)
-[![Version](https://img.shields.io/badge/version-2.10.9-blue.svg)](https://github.com/czlonkowski/n8n-mcp)
+[![Version](https://img.shields.io/badge/version-2.11.3-blue.svg)](https://github.com/czlonkowski/n8n-mcp)
 [![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-1728%20passing-brightgreen.svg)](https://github.com/czlonkowski/n8n-mcp/actions)
-[![n8n version](https://img.shields.io/badge/n8n-^1.110.1-orange.svg)](https://github.com/n8n-io/n8n)
+[![n8n version](https://img.shields.io/badge/n8n-^1.111.0-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)
 
@@ -389,6 +389,10 @@ You are an expert in n8n automation software using n8n-MCP tools. Your role is t
 
 6. **Building Phase** - Create or customize the workflow:
    - If using template: `get_template(templateId, {mode: "full"})`
+   - **MANDATORY ATTRIBUTION**: When using a template, ALWAYS inform the user:
+     - "This workflow is based on a template by **[author.name]** (@[author.username])"
+     - "View the original template at: [url]"
+     - Example: "This workflow is based on a template by **David Ashby** (@cfomodz). View the original at: https://n8n.io/workflows/2414"
    - Customize template or build from validated configurations
    - Connect nodes with proper structure
    - Add error handling where appropriate
@@ -410,6 +414,7 @@ You are an expert in n8n automation software using n8n-MCP tools. Your role is t
 ## Key Insights
 
 - **TEMPLATES FIRST** - Always check for existing templates before building from scratch (2,500+ available!)
+- **ATTRIBUTION REQUIRED** - Always credit template authors with name, username, and link to n8n.io
 - **SMART FILTERING** - Use metadata filters to find templates matching user skill level and time constraints
 - **USE CODE NODE ONLY WHEN IT IS NECESSARY** - always prefer to use standard nodes over code node. Use code node only when you are sure you need it.
 - **VALIDATE EARLY AND OFTEN** - Catch errors before they reach deployment
@@ -504,6 +509,7 @@ n8n_update_partial_workflow({
 
 - ALWAYS check for existing templates before building from scratch
 - LEVERAGE metadata filters to find skill-appropriate templates
+- **ALWAYS ATTRIBUTE TEMPLATES**: When using any template, you MUST share the author's name, username, and link to the original template on n8n.io
 - VALIDATE templates before deployment (they may need updates)
 - USE diff operations for updates (80-90% token savings)
 - STATE validation results clearly
@@ -861,6 +867,23 @@ See [Automated Release Guide](./docs/AUTOMATED_RELEASES.md) for complete details
 - [Anthropic](https://anthropic.com) for the Model Context Protocol
 - All contributors and users of this project
 
+### Template Attribution
+
+All workflow templates in this project are fetched from n8n's public template gallery at [n8n.io/workflows](https://n8n.io/workflows). Each template includes:
+- Full attribution to the original creator (name and username)
+- Direct link to the source template on n8n.io
+- Original workflow ID for reference
+
+The AI agent instructions in this project contain mandatory attribution requirements. When using any template, the AI will automatically:
+- Share the template author's name and username
+- Provide a direct link to the original template on n8n.io
+- Display attribution in the format: "This workflow is based on a template by **[author]** (@[username]). View the original at: [url]"
+
+Template creators retain all rights to their workflows. This project indexes templates to improve discoverability through AI assistants. If you're a template creator and have concerns about your template being indexed, please open an issue.
+
+Special thanks to the prolific template contributors whose work helps thousands of users automate their workflows, including:
+**David Ashby** (@cfomodz), **Yaron Been** (@yaron-nofluff), **Jimleuk** (@jimleuk), **Davide** (@n3witalia), **David Olusola** (@dae221), **Ranjan Dailata** (@ranjancse), **Airtop** (@cesar-at-airtop), **Joseph LePage** (@joe), **Don Jayamaha Jr** (@don-the-gem-dealer), **Angel Menendez** (@djangelic), and the entire n8n community of creators!
+
 ---
 
 <div align="center">

docs/CHANGELOG.md

@@ -7,6 +7,39 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.11.3] - 2025-09-17
+
+### Fixed
+- **n8n_update_partial_workflow Tool**: Fixed critical bug where updateNode and updateConnection operations were using incorrect property name
+  - Changed from `changes` property to `updates` property to match documentation and expected behavior
+  - Resolves issue where AI agents would break workflow connections when updating nodes
+  - Fixes GitHub issues #159 (update_partial_workflow is invalid) and #168 (partial workflow update returns error)
+  - All related tests updated to use correct property name
+
+## [2.11.2] - 2025-09-16
+
+### Updated
+- **n8n Dependencies**: Updated to latest versions for compatibility and new features
+  - n8n: 1.110.1 → 1.111.0
+  - n8n-core: 1.109.0 → 1.110.0
+  - n8n-workflow: 1.107.0 → 1.108.0
+  - @n8n/n8n-nodes-langchain: 1.109.1 → 1.110.0
+- **Node Database**: Rebuilt with 535 nodes from updated n8n packages
+- **Templates**: Preserved all 2,598 workflow templates with metadata intact
+- All critical nodes validated successfully (httpRequest, code, slack, agent)
+- Test suite: 1,911 tests passing, 5 flaky performance tests failing (99.7% pass rate)
+
+## [2.11.1] - 2025-09-15
+
+### Added
+- **Optional Fields Parameter for search_templates**: Enhanced search_templates tool with field filtering capability
+  - New optional `fields` parameter accepts an array of field names to include in response
+  - Supported fields: 'id', 'name', 'description', 'author', 'nodes', 'views', 'created', 'url', 'metadata'
+  - Reduces response size by 70-98% when requesting only specific fields (e.g., just id and name)
+  - Maintains full backward compatibility - existing calls without fields parameter work unchanged
+  - Example: `search_templates({query: "slack", fields: ["id", "name"]})` returns minimal data
+  - Significantly improves AI agent performance by reducing token usage
+
 ### Added
 - **Fuzzy Node Type Matching for Templates**: Improved template discovery with flexible node type resolution
   - Templates can now be found using simple node names: `["slack"]` instead of `["n8n-nodes-base.slack"]`
@@ -1286,6 +1319,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Basic n8n and MCP integration
 - Core workflow automation features
 
+[2.11.2]: https://github.com/czlonkowski/n8n-mcp/compare/v2.11.1...v2.11.2
+[2.11.1]: https://github.com/czlonkowski/n8n-mcp/compare/v2.11.0...v2.11.1
+[2.11.0]: https://github.com/czlonkowski/n8n-mcp/compare/v2.10.9...v2.11.0
+[2.10.9]: https://github.com/czlonkowski/n8n-mcp/compare/v2.10.8...v2.10.9
+[2.10.8]: https://github.com/czlonkowski/n8n-mcp/compare/v2.10.5...v2.10.8
+[2.10.5]: https://github.com/czlonkowski/n8n-mcp/compare/v2.10.4...v2.10.5
 [2.10.4]: https://github.com/czlonkowski/n8n-mcp/compare/v2.10.3...v2.10.4
 [2.10.3]: https://github.com/czlonkowski/n8n-mcp/compare/v2.10.2...v2.10.3
 [2.10.2]: https://github.com/czlonkowski/n8n-mcp/compare/v2.10.1...v2.10.2

package.json

@@ -1,6 +1,6 @@
 {
   "name": "n8n-mcp",
-  "version": "2.11.0",
+  "version": "2.11.3",
   "description": "Integration between n8n workflow automation and Model Context Protocol (MCP)",
   "main": "dist/index.js",
   "bin": {
@@ -128,12 +128,12 @@
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.13.2",
-    "@n8n/n8n-nodes-langchain": "^1.109.1",
+    "@n8n/n8n-nodes-langchain": "^1.110.0",
     "dotenv": "^16.5.0",
     "express": "^5.1.0",
-    "n8n": "^1.110.1",
-    "n8n-core": "^1.109.0",
-    "n8n-workflow": "^1.107.0",
+    "n8n": "^1.111.0",
+    "n8n-core": "^1.110.0",
+    "n8n-workflow": "^1.108.0",
     "openai": "^4.77.0",
     "sql.js": "^1.13.0",
     "uuid": "^10.0.0",
@@ -143,5 +143,8 @@
     "@rollup/rollup-darwin-arm64": "^4.50.0",
     "@rollup/rollup-linux-x64-gnu": "^4.50.0",
     "better-sqlite3": "^11.10.0"
+  },
+  "overrides": {
+    "pyodide": "0.26.4"
   }
 }

package.runtime.json

@@ -1,6 +1,6 @@
 {
   "name": "n8n-mcp-runtime",
-  "version": "2.10.9",
+  "version": "2.11.2",
   "description": "n8n MCP Server Runtime Dependencies Only",
   "private": true,
   "dependencies": {

src/mcp/handlers-workflow-diff.ts

@@ -21,7 +21,7 @@ const workflowDiffSchema = z.object({
     node: z.any().optional(),
     nodeId: z.string().optional(),
     nodeName: z.string().optional(),
-    changes: z.any().optional(),
+    updates: z.any().optional(),
     position: z.tuple([z.number(), z.number()]).optional(),
     // Connection operations
     source: z.string().optional(),

src/mcp/server.ts

@@ -746,7 +746,8 @@ export class N8NDocumentationMCPServer {
         this.validateToolParams(name, args, ['query']);
         const searchLimit = Math.min(Math.max(Number(args.limit) || 20, 1), 100);
         const searchOffset = Math.max(Number(args.offset) || 0, 0);
-        return this.searchTemplates(args.query, searchLimit, searchOffset);
+        const searchFields = args.fields as string[] | undefined;
+        return this.searchTemplates(args.query, searchLimit, searchOffset, searchFields);
       case 'get_templates_for_task':
         this.validateToolParams(name, args, ['task']);
         const taskLimit = Math.min(Math.max(Number(args.limit) || 10, 1), 100);
@@ -2399,11 +2400,11 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
     };
   }
   
-  private async searchTemplates(query: string, limit: number = 20, offset: number = 0): Promise<any> {
+  private async searchTemplates(query: string, limit: number = 20, offset: number = 0, fields?: string[]): Promise<any> {
     await this.ensureInitialized();
     if (!this.templateService) throw new Error('Template service not initialized');
     
-    const result = await this.templateService.searchTemplates(query, limit, offset);
+    const result = await this.templateService.searchTemplates(query, limit, offset, fields);
     
     if (result.items.length === 0 && offset === 0) {
       return {

src/mcp/tool-docs/templates/search-templates.ts

@@ -5,13 +5,14 @@ export const searchTemplatesDoc: ToolDocumentation = {
   category: 'templates',
   essentials: {
     description: 'Search templates by name/description keywords. NOT for node types! For nodes use list_node_templates. Example: "chatbot".',
-    keyParameters: ['query', 'limit'],
-    example: 'search_templates({query: "chatbot"})',
+    keyParameters: ['query', 'limit', 'fields'],
+    example: 'search_templates({query: "chatbot", fields: ["id", "name"]})',
     performance: 'Fast (<100ms) - FTS5 full-text search',
     tips: [
       'Searches template names and descriptions, NOT node types',
       'Use keywords like "automation", "sync", "notification"',
-      'For node-specific search, use list_node_templates instead'
+      'For node-specific search, use list_node_templates instead',
+      'Use fields parameter to get only specific data (reduces response by 70-90%)'
     ]
   },
   full: {
@@ -22,6 +23,11 @@ export const searchTemplatesDoc: ToolDocumentation = {
         required: true,
         description: 'Search query for template names/descriptions. NOT for node types! Examples: "chatbot", "automation", "social media", "webhook". For node-based search use list_node_templates instead.'
       },
+      fields: {
+        type: 'array',
+        required: false,
+        description: 'Fields to include in response. Options: "id", "name", "description", "author", "nodes", "views", "created", "url", "metadata". Default: all fields. Example: ["id", "name"] for minimal response.'
+      },
       limit: {
         type: 'number',
         required: false,
@@ -47,7 +53,9 @@ export const searchTemplatesDoc: ToolDocumentation = {
       'search_templates({query: "email notification"}) - Find email alert workflows',
       'search_templates({query: "data sync"}) - Find data synchronization workflows',
       'search_templates({query: "webhook automation", limit: 30}) - Find webhook-based automations',
-      'search_templates({query: "social media scheduler"}) - Find social posting workflows'
+      'search_templates({query: "social media scheduler"}) - Find social posting workflows',
+      'search_templates({query: "slack", fields: ["id", "name"]}) - Get only IDs and names of Slack templates',
+      'search_templates({query: "automation", fields: ["id", "name", "description"]}) - Get minimal info for automation templates'
     ],
     useCases: [
       'Find workflows by business purpose',

src/mcp/tool-docs/workflow_management/n8n-update-partial-workflow.ts

@@ -48,7 +48,7 @@ export const n8nUpdatePartialWorkflowDoc: ToolDocumentation = {
     },
     returns: 'Updated workflow object or validation results if validateOnly=true',
     examples: [
-      '// Update node parameter\nn8n_update_partial_workflow({id: "abc", operations: [{type: "updateNode", nodeName: "HTTP Request", changes: {"parameters.url": "https://api.example.com"}}]})',
+      '// Update node parameter\nn8n_update_partial_workflow({id: "abc", operations: [{type: "updateNode", nodeName: "HTTP Request", updates: {"parameters.url": "https://api.example.com"}}]})',
       '// Add connection between nodes\nn8n_update_partial_workflow({id: "xyz", operations: [{type: "addConnection", source: "Webhook", target: "Slack", sourceOutput: "main", targetInput: "main"}]})',
       '// Multiple operations in one call\nn8n_update_partial_workflow({id: "123", operations: [\n  {type: "addNode", node: {name: "Transform", type: "n8n-nodes-base.code", position: [400, 300]}},\n  {type: "addConnection", source: "Webhook", target: "Transform"},\n  {type: "updateSettings", settings: {timezone: "America/New_York"}}\n]})',
       '// Validate before applying\nn8n_update_partial_workflow({id: "456", operations: [{type: "removeNode", nodeName: "Old Process"}], validateOnly: true})'
@@ -73,7 +73,7 @@ export const n8nUpdatePartialWorkflowDoc: ToolDocumentation = {
       'Operations validated together - all must be valid',
       'Order matters for dependent operations (e.g., must add node before connecting to it)',
       'Node references accept ID or name, but name must be unique',
-      'Dot notation for nested updates: use "parameters.url" not nested objects'
+      'Use "updates" property for updateNode operations: {type: "updateNode", updates: {...}}'
     ],
     relatedTools: ['n8n_update_full_workflow', 'n8n_get_workflow', 'validate_workflow', 'tools_documentation']
   }

src/mcp/tools.ts

@@ -414,6 +414,14 @@ export const n8nDocumentationToolsFinal: ToolDefinition[] = [
           type: 'string',
           description: 'Search keyword as string. Example: "chatbot"',
         },
+        fields: {
+          type: 'array',
+          items: {
+            type: 'string',
+            enum: ['id', 'name', 'description', 'author', 'nodes', 'views', 'created', 'url', 'metadata'],
+          },
+          description: 'Fields to include in response. Default: all fields. Example: ["id", "name"] for minimal response.',
+        },
         limit: {
           type: 'number',
           description: 'Maximum number of results. Default 20.',

src/services/workflow-diff-engine.ts

@@ -453,8 +453,8 @@ export class WorkflowDiffEngine {
     const node = this.findNode(workflow, operation.nodeId, operation.nodeName);
     if (!node) return;
     
-    // Apply changes using dot notation
-    Object.entries(operation.changes).forEach(([path, value]) => {
+    // Apply updates using dot notation
+    Object.entries(operation.updates).forEach(([path, value]) => {
       this.setNestedProperty(node, path, value);
     });
   }
@@ -545,18 +545,18 @@ export class WorkflowDiffEngine {
       type: 'removeConnection',
       source: operation.source,
       target: operation.target,
-      sourceOutput: operation.changes.sourceOutput,
-      targetInput: operation.changes.targetInput
+      sourceOutput: operation.updates.sourceOutput,
+      targetInput: operation.updates.targetInput
     });
     
     this.applyAddConnection(workflow, {
       type: 'addConnection',
       source: operation.source,
       target: operation.target,
-      sourceOutput: operation.changes.sourceOutput,
-      targetInput: operation.changes.targetInput,
-      sourceIndex: operation.changes.sourceIndex,
-      targetIndex: operation.changes.targetIndex
+      sourceOutput: operation.updates.sourceOutput,
+      targetInput: operation.updates.targetInput,
+      sourceIndex: operation.updates.sourceIndex,
+      targetIndex: operation.updates.targetIndex
     });
   }
 

src/templates/template-service.ts

@@ -55,6 +55,9 @@ export interface TemplateMinimal {
   };
 }
 
+export type TemplateField = 'id' | 'name' | 'description' | 'author' | 'nodes' | 'views' | 'created' | 'url' | 'metadata';
+export type PartialTemplateInfo = Partial<TemplateInfo>;
+
 export class TemplateService {
   private repository: TemplateRepository;
   
@@ -124,12 +127,17 @@ export class TemplateService {
   /**
    * Search templates by query
    */
-  async searchTemplates(query: string, limit: number = 20, offset: number = 0): Promise<PaginatedResponse<TemplateInfo>> {
+  async searchTemplates(query: string, limit: number = 20, offset: number = 0, fields?: string[]): Promise<PaginatedResponse<PartialTemplateInfo>> {
     const templates = this.repository.searchTemplates(query, limit, offset);
     const total = this.repository.getSearchCount(query);
     
+    // If fields are specified, filter the template info
+    const items = fields 
+      ? templates.map(t => this.formatTemplateWithFields(t, fields))
+      : templates.map(t => this.formatTemplateInfo(t));
+    
     return {
-      items: templates.map(this.formatTemplateInfo),
+      items,
       total,
       limit,
       offset,
@@ -403,4 +411,21 @@ export class TemplateService {
     
     return info;
   }
+  
+  /**
+   * Format template with only specified fields
+   */
+  private formatTemplateWithFields(template: StoredTemplate, fields: string[]): PartialTemplateInfo {
+    const fullInfo = this.formatTemplateInfo(template);
+    const result: PartialTemplateInfo = {};
+    
+    // Only include requested fields
+    for (const field of fields) {
+      if (field in fullInfo) {
+        (result as any)[field] = (fullInfo as any)[field];
+      }
+    }
+    
+    return result;
+  }
 }

src/types/workflow-diff.ts

@@ -31,7 +31,7 @@ export interface UpdateNodeOperation extends DiffOperation {
   type: 'updateNode';
   nodeId?: string; // Can use either ID or name
   nodeName?: string;
-  changes: {
+  updates: {
     [path: string]: any; // Dot notation paths like 'parameters.url'
   };
 }
@@ -78,7 +78,7 @@ export interface UpdateConnectionOperation extends DiffOperation {
   type: 'updateConnection';
   source: string;
   target: string;
-  changes: {
+  updates: {
     sourceOutput?: string;
     targetInput?: string;
     sourceIndex?: number;

tests/unit/mcp/handlers-workflow-diff.test.ts

@@ -159,7 +159,7 @@ describe('handlers-workflow-diff', () => {
           {
             type: 'updateNode',
             nodeId: 'node2',
-            changes: { name: 'Updated HTTP Request' },
+            updates: { name: 'Updated HTTP Request' },
           },
         ],
         validateOnly: true,
@@ -196,7 +196,7 @@ describe('handlers-workflow-diff', () => {
           {
             type: 'updateNode',
             nodeId: 'node1',
-            changes: { name: 'Updated Start' },
+            updates: { name: 'Updated Start' },
           },
           {
             type: 'addNode',
@@ -243,7 +243,7 @@ describe('handlers-workflow-diff', () => {
           {
             type: 'updateNode',
             nodeId: 'non-existent-node',
-            changes: { name: 'Updated' },
+            updates: { name: 'Updated' },
           },
         ],
       };
@@ -320,7 +320,7 @@ describe('handlers-workflow-diff', () => {
 
       const result = await handleUpdatePartialWorkflow({
         id: 'test-id',
-        operations: [{ type: 'updateNode', nodeId: 'node1', changes: {} }],
+        operations: [{ type: 'updateNode', nodeId: 'node1', updates: {} }],
       });
 
       expect(result).toEqual({
@@ -341,7 +341,7 @@ describe('handlers-workflow-diff', () => {
           {
             // Missing required 'type' field
             nodeId: 'node1',
-            changes: {},
+            updates: {},
           },
         ],
       };
@@ -417,7 +417,7 @@ describe('handlers-workflow-diff', () => {
 
       await handleUpdatePartialWorkflow({
         id: 'test-id',
-        operations: [{ type: 'updateNode', nodeId: 'node1', changes: {} }],
+        operations: [{ type: 'updateNode', nodeId: 'node1', updates: {} }],
       });
 
       expect(logger.debug).toHaveBeenCalledWith(
@@ -502,7 +502,7 @@ describe('handlers-workflow-diff', () => {
             type: 'updateNode',
             nodeId: 'node1',
             nodeName: 'Start', // Both nodeId and nodeName provided
-            changes: { name: 'New Start' },
+            updates: { name: 'New Start' },
             description: 'Update start node name',
           },
           {
@@ -561,8 +561,8 @@ describe('handlers-workflow-diff', () => {
       const diffRequest = {
         id: 'test-workflow-id',
         operations: [
-          { type: 'updateNode', nodeId: 'node1', changes: { name: 'Updated' } },
-          { type: 'updateNode', nodeId: 'invalid-node', changes: { name: 'Fail' } },
+          { type: 'updateNode', nodeId: 'node1', updates: { name: 'Updated' } },
+          { type: 'updateNode', nodeId: 'invalid-node', updates: { name: 'Fail' } },
           { type: 'addTag', tag: 'test' },
         ],
       };

tests/unit/services/template-service.test.ts

@@ -683,7 +683,7 @@ describe('TemplateService', () => {
 
       const result = await service.searchTemplates('test');
 
-      expect(result.items[0].author.verified).toBe(false);
+      expect(result.items[0]?.author?.verified).toBe(false);
     });
   });
 });

tests/unit/services/workflow-diff-engine.test.ts

@@ -281,7 +281,7 @@ describe('WorkflowDiffEngine', () => {
       const operation: UpdateNodeOperation = {
         type: 'updateNode',
         nodeId: 'http-1',
-        changes: {
+        updates: {
           'parameters.method': 'POST',
           'parameters.url': 'https://new-api.example.com'
         }
@@ -304,7 +304,7 @@ describe('WorkflowDiffEngine', () => {
       const operation: UpdateNodeOperation = {
         type: 'updateNode',
         nodeName: 'Slack',
-        changes: {
+        updates: {
           'parameters.resource': 'channel',
           'parameters.operation': 'create',
           'credentials.slackApi.name': 'New Slack Account'
@@ -329,7 +329,7 @@ describe('WorkflowDiffEngine', () => {
       const operation: UpdateNodeOperation = {
         type: 'updateNode',
         nodeId: 'non-existent',
-        changes: {
+        updates: {
           'parameters.test': 'value'
         }
       };
@@ -617,7 +617,7 @@ describe('WorkflowDiffEngine', () => {
         type: 'updateConnection',
         source: 'IF',
         target: 'slack-1',
-        changes: {
+        updates: {
           sourceOutput: 'false',
           sourceIndex: 0,
           targetIndex: 0
@@ -1039,7 +1039,7 @@ describe('WorkflowDiffEngine', () => {
       const operation: UpdateNodeOperation = {
         type: 'updateNode',
         nodeId: 'Webhook', // Using name as ID
-        changes: {
+        updates: {
           'parameters.path': 'new-webhook-path'
         }
       };