Implements 4 new features for n8n_update_partial_workflow:
New Operations:
- cleanStaleConnections: Auto-remove broken workflow connections
- replaceConnections: Replace entire connections object in one operation
Enhanced Features:
- removeConnection ignoreErrors flag: Graceful cleanup without failures
- continueOnError mode: Best-effort batch operations with detailed tracking
Impact:
- Reduces broken workflow fix time from 10-15 minutes to 30 seconds
- Token efficiency: 1 cleanStaleConnections vs 10+ manual operations
- 15 new tests added, all passing
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Added OperationSimilarityService for validating operations with "Did you mean...?" suggestions
- Added ResourceSimilarityService for validating resources with plural/singular detection
- Implements Levenshtein distance algorithm for typo detection
- Pattern matching for common operation/resource mistakes
- 5-minute cache with automatic cleanup to prevent memory leaks
- Confidence scoring (30% minimum threshold) for suggestion quality
- Resource-aware operation filtering for contextual suggestions
- Safe JSON parsing with ValidationServiceError for proper error handling
- Type guards for safe property access
- Performance optimizations with early termination
- Comprehensive test coverage (37 new tests)
- Integration tested with n8n-mcp-tester agent
Example use cases:
- "listFiles" → suggests "search" for Google Drive
- "files" → suggests singular "file"
- "flie" → suggests "file" (typo correction)
- "downlod" → suggests "download"
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
- Remove 5-operation limit from n8n_update_partial_workflow
- Update CHANGELOG.md with version 2.13.1 entry
- Bump version in package.json to 2.13.1
- Remove static version badge from README.md (npm badge remains)
The workflow diff engine now supports unlimited operations per request,
enabling complex workflow refactoring in single API calls.
The 5-operation limit was overly conservative and unnecessary. Analysis showed:
- Workflow is cloned before modifications (no original mutation)
- All operations validated before any are applied (true atomicity)
- First error causes immediate return (no partial state possible)
- Two-pass processing handles dependencies correctly
Changes:
- Remove hard-coded 5-operation limit check from workflow-diff-engine.ts
- Update tool descriptions and documentation to reflect unlimited operations
- Add tests verifying 50 and 100+ operations work successfully
- Add example showing 26 operations in single request
The system already ensures complete transactional integrity regardless of
operation count. Bottleneck is workflow size, not operation count.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
## 🎉 Release Highlights
### ✨ New Features
- **Webhook Path Autofixer**: Automatically generates UUIDs for webhook nodes missing path configuration
- **Enhanced Node Type Suggestions**: Intelligent node type correction with similarity matching
- **n8n_autofix_workflow Tool**: New MCP tool for automatic workflow error correction
### 🔒 Security & Performance
- Eliminated ReDoS vulnerability in NodeSimilarityService
- Optimized Levenshtein distance algorithm from O(m*n) to O(n) space
- Added cache invalidation with version tracking to prevent memory leaks
### 📚 Documentation
- Comprehensive CHANGELOG entry with detailed feature descriptions
- Updated README with new autofixer tool documentation
- Added tool usage examples in validation workflow
All 16 test cases passing with 100% success rate.
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Co-Authored-By: Claude <noreply@anthropic.com>
- Updated n8n from 1.111.0 to 1.112.3
- Updated n8n-core from 1.110.0 to 1.111.0
- Updated n8n-workflow from 1.108.0 to 1.109.0
- Updated @n8n/n8n-nodes-langchain from 1.110.0 to 1.111.1
- Rebuilt node database with 536 nodes (438 from n8n-nodes-base, 98 from langchain)
- Bumped version to 2.12.2
- Updated README.md badges to reflect new n8n version
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Co-Authored-By: Claude <noreply@anthropic.com>
- Add validateErrorOutputConfiguration method to detect when multiple nodes are incorrectly placed in main[0]
- Fix checkWorkflowPatterns to check main[1] for error outputs instead of outputs.error
- Cross-validate onError property matches actual connection structure
- Provide clear error messages with JSON examples showing correct configuration
- Use heuristic detection for error handler nodes (names containing error, fail, catch, etc.)
- Add comprehensive test coverage with 16+ test cases
- Bump version to 2.12.1
Fixes issues where AI agents would incorrectly configure error outputs by placing multiple nodes in the same array instead of separating them into success (main[0]) and error (main[1]) paths.
🤖 Generated with Claude Code (https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add header extraction logic in http-server-single-session.ts
- Extract X-N8n-Url, X-N8n-Key, X-Instance-Id, X-Session-Id headers
- Pass extracted context to handleRequest method
- Maintain full backward compatibility (falls back to env vars)
- Add comprehensive tests for header extraction scenarios
- Update documentation with HTTP header specifications
This fixes the bug where instance-specific configuration headers were not
being extracted and passed to the MCP server, preventing the multi-tenant
feature from working as designed in PR #209.
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Co-Authored-By: Claude <noreply@anthropic.com>
- Add cache-utils.ts with hash memoization, configurable cache, metrics tracking, mutex, and retry logic
- Enhance validation with field-specific error messages in instance-context.ts
- Add JSDoc documentation to all public methods
- Make cache configurable via INSTANCE_CACHE_MAX and INSTANCE_CACHE_TTL_MINUTES env vars
- Add comprehensive test coverage for cache utilities and metrics monitoring
- Fix test expectations for new validation error format
Addresses all feedback from PR #209 code review
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Co-Authored-By: Claude <noreply@anthropic.com>
- Bump version from 2.11.3 to 2.12.0
- Add comprehensive documentation for flexible instance configuration
- Update CHANGELOG with new features, security enhancements, and performance improvements
- Document architecture, usage examples, and security considerations
- Include migration guide for existing deployments
This release introduces flexible instance configuration, enabling n8n-mcp to serve
multiple users with different n8n instances dynamically, with full backward compatibility.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Bump version from 2.11.2 to 2.11.3
- Update README.md version badge
- Add CHANGELOG.md entry documenting the fix for n8n_update_partial_workflow tool
- Fix resolves GitHub issues #159 and #168
- Bumped version from 2.11.1 to 2.11.2
- Updated README version badge to 2.11.2
- Updated README n8n version badge to ^1.111.0
- Added comprehensive CHANGELOG entry for v2.11.2
- Documented n8n dependency updates and test results
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Implement OpenAI batch API integration for metadata generation
- Add search_templates_by_metadata tool with advanced filtering
- Enhance list_templates to include descriptions and optional metadata
- Generate metadata for 2,534 templates (97.5% coverage)
- Update README with Template Tools section and enhanced Claude setup
- Add comprehensive documentation for metadata system
Enables intelligent template discovery through:
- Complexity levels (simple/medium/complex)
- Setup time estimates (5-480 minutes)
- Target audience filtering (developers/marketers/analysts)
- Required services detection
- Category and use case classification
Co-Authored-By: Claude <noreply@anthropic.com>
- Implement OpenAI batch API integration for metadata generation
- Add metadata columns to database schema (metadata_json, metadata_generated_at)
- Create MetadataGenerator service with structured output schemas
- Create BatchProcessor for handling OpenAI batch jobs
- Add --generate-metadata flag to fetch-templates script
- Update template repository with metadata management methods
- Add OpenAI configuration to environment variables
- Include comprehensive tests for metadata generation
- Use gpt-4o-mini model with 50% cost savings via batch API
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Document new fuzzy matching capability for template discovery
- Describes 50% reduction in failed queries
- Lists key features and improvements
- Uses factual, technical language
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Updated n8n from 1.106.3 to 1.107.4
- Updated n8n-core from 1.105.3 to 1.106.2
- Updated n8n-workflow from 1.103.3 to 1.104.1
- Updated @n8n/n8n-nodes-langchain from 1.105.3 to 1.106.2
- Rebuilt node database with 535 nodes
- Bumped version to 2.10.5
- All tests passing
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
- Updated n8n from 1.105.2 to 1.106.3
- Updated n8n-core from 1.104.1 to 1.105.3
- Updated n8n-workflow from 1.102.1 to 1.103.3
- Updated @n8n/n8n-nodes-langchain from 1.104.1 to 1.105.3
- Rebuilt node database with 535 nodes
- All 1,728 tests passing
- Bumped version to 2.10.4
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Fix type safety vulnerability in enhanced-config-validator.ts
- Added proper type checking before string operations
- Return early when nodeType is invalid instead of using empty string
- Improve error handling robustness in MCP server
- Wrapped validation in try-catch to handle unexpected errors
- Properly re-throw ValidationError instances
- Add user-friendly error messages for internal errors
- Write comprehensive CHANGELOG entry for v2.10.3
- Document fixes for issues #58, #68, #70, #73
- Detail new validation system features
- List all enhancements and test coverage
Addressed HIGH priority issues from code review:
- Type safety holes in config validator
- Missing error handling for validation system failures
- Consistent error types across validation tools
- Update N8N_DEPLOYMENT.md to recommend test-n8n-integration.sh
- Remove outdated test-n8n-mode.sh and related files
- The integration test script properly tests full n8n integration with correct protocol version (2024-11-05)
- Removed scripts: test-n8n-mode.sh, test-n8n-mode.ts, debug-n8n-mode.js
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
- Updated n8n from 1.104.1 to 1.105.2
- Updated n8n-core from 1.103.1 to 1.104.1
- Updated n8n-workflow from 1.101.0 to 1.102.1
- Updated @n8n/n8n-nodes-langchain from 1.103.1 to 1.104.1
- Rebuilt node database with 534 nodes
- All 1,620 tests passing
- Updated CHANGELOG.md
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add release.yml GitHub workflow for automated npm releases
- Add prepare-release.js script for version bumping and changelog
- Add extract-changelog.js for release notes extraction
- Add test-release-automation.js for testing the workflow
- Add documentation for automated releases
This enables automatic npm publishing when tags are pushed,
fixing the issue where releases were created but npm packages
were not published.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Updated version in package.json and package.runtime.json
- Updated README version badge
- Moved changelog entry from Unreleased to v2.10.1
- Added version comparison link for v2.10.1
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Added cleanupTimer property to track setInterval timer
- Implemented destroy() method to clear timer and prevent memory leak
- Updated MCP server shutdown to call cache.destroy()
- Enhanced HTTP server error handling with transport.onerror
- Fixed event listener cleanup to prevent accumulation
- Added comprehensive test coverage for memory leak prevention
This fixes the issue where MCP server would lose connection after
several hours due to timer accumulation causing memory exhaustion.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Added automated release system with GitHub Actions
- Implemented CI/CD pipeline for zero-touch releases
- Added security fixes for deprecated actions and vulnerabilities
- Created developer tools for release preparation
- Full documentation in docs/AUTOMATED_RELEASES.md
- Improved GitHub Actions test to verify N8N_MODE environment variable
- Added explanatory comment in docker-compose.n8n.yml
- Added Docker Build Changes section to deployment documentation
- Explains the consolidation benefits and rationale for users
- Research proved n8n packages are NOT required at runtime for N8N_MODE
- The 'n8n' CMD argument was vestigial and completely ignored by code
- N8N_MODE only affects protocol negotiation, not runtime functionality
- Standard Dockerfile works perfectly with N8N_MODE=true
Benefits:
- Eliminates 500MB+ of unnecessary n8n packages from Docker images
- Reduces build time from 8+ minutes to 1-2 minutes
- Simplifies maintenance with single Dockerfile
- Improves CI/CD reliability
Updated:
- Removed Dockerfile.n8n
- Updated GitHub Actions to use standard Dockerfile
- Fixed docker-compose.n8n.yml to use standard Dockerfile
- Added missing MCP_MODE=http and AUTH_TOKEN env vars
- Updated all documentation references
- Create missing v2.9.1 git tag to trigger Docker builds
- Fix GitHub Actions workflow with proper environment variables
- Add comprehensive deployment documentation updates:
* Add missing MCP_MODE=http environment variable requirement
* Clarify Server URL must include /mcp endpoint
* Add complete environment variables reference table
* Update all Docker examples with proper variable configuration
* Add version compatibility warnings for pre-built images
* Document build-from-source as recommended approach
* Add comprehensive troubleshooting section with common issues
* Include systematic debugging steps and diagnostic commands
- Optimize package.runtime.json dependencies for Docker builds
- Ensure both MCP_AUTH_TOKEN and AUTH_TOKEN use same value
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Bumped version from 2.9.0 to 2.9.1
- Updated version badge in README.md
- Added comprehensive changelog entry documenting fixedCollection validation fixes
- Increased test coverage from 79.95% to 80.16% to meet CI requirements
- Added 50 new tests for fixed-collection-validator and console-manager
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
This major update adds comprehensive n8n integration, enabling n8n-mcp to run
as an MCP server within n8n workflows using the MCP Client Tool node.
## Key Features
### n8n Integration (NEW)
- Full MCP Client Tool compatibility with protocol version negotiation
- Dedicated n8n mode with optimized Docker deployment
- Workflow examples and n8n-friendly tool descriptions
- Quick deployment script for easy setup
### Protocol & Compatibility
- Intelligent protocol version selection (2024-11-05 for n8n, 2025-03-26 for others)
- Fixed schema validation issues with n8n's nested output format
- Enhanced parameter validation with clear error messages
- Comprehensive test suite for protocol negotiation
### Security Enhancements
- Dynamic UID/GID generation (10000-59999) for Docker containers
- Improved error sanitization for production environments
- Fixed information leakage in error responses
- Enhanced permission handling for mounted volumes
### Performance Optimizations
- Docker build time reduced from 13+ minutes to 1-2 minutes
- Image size reduced from ~1.5GB to ~280MB
- Fixed ARM64 build failures
- Optimized to use runtime-only dependencies
### Developer Experience
- Comprehensive parameter validation for all MCP tools
- Made README version badge dynamic from package.json
- Enhanced test coverage with session management tests
- Improved CI/CD with informational patch coverage
### Documentation
- Added comprehensive N8N_DEPLOYMENT.md guide
- Updated CHANGELOG.md for version 2.9.0
- Enhanced CLAUDE.md with n8n-specific instructions
- Added deployment scripts and examples
## Technical Details
Files Added:
- Dockerfile.n8n, docker-compose.n8n.yml for n8n deployment
- Protocol version negotiation utilities
- n8n integration test suite
- Session management tests
- Deployment and test scripts
- Version badge update scripts
Files Modified:
- Enhanced MCP server with n8n mode support
- Improved HTTP server with better error handling
- Updated Docker configurations for security
- Enhanced logging for n8n compatibility
- CHANGELOG.md with comprehensive update description
This update makes n8n-mcp a first-class citizen in the n8n ecosystem,
enabling powerful AI-assisted workflow automation.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add N8N_MODE environment variable for n8n-specific behavior
- Implement HTTP Streamable transport with multiple session support
- Add protocol version endpoint (GET /mcp) for n8n compatibility
- Support multiple initialize requests for stateless n8n clients
- Add Docker configuration for n8n deployment
- Add test script with persistent volume support
- Add comprehensive unit tests for n8n mode
- Fix session management to handle per-request transport pattern
BREAKING CHANGE: Server now creates new transport for each initialize request
when running in n8n mode to support n8n's stateless client architecture
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Updated version in package.json and package.runtime.json
- Updated version badge in README.md
- Added comprehensive changelog entry for v2.8.3
- Fixed TypeScript lint errors in test files by making env vars optional
- Fixed edge-cases test to include required NODE_ENV
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
This commit adds comprehensive support for JSON configuration files in Docker containers,
addressing the issue where the Docker image fails to start in server mode and ignores
configuration files.
## Changes
### Docker Configuration Support
- Added parse-config.js to safely parse JSON configs and export as shell variables
- Implemented secure shell quoting to prevent command injection
- Added dangerous environment variable blocking for security
- Support for all JSON data types with proper edge case handling
### Docker Server Mode Fix
- Added support for "n8n-mcp serve" command in entrypoint
- Properly transforms serve command to HTTP mode
- Fixed missing n8n-mcp binary issue in Docker image
### Security Enhancements
- POSIX-compliant shell quoting without eval
- Blocked dangerous variables (PATH, LD_PRELOAD, etc.)
- Sanitized configuration keys to prevent invalid shell variables
- Protection against shell metacharacters in values
### Testing
- Added 53 comprehensive tests for Docker configuration
- Unit tests for parsing, security, and edge cases
- Integration tests for Docker entrypoint behavior
- Security-focused tests for injection prevention
### Documentation
- Updated Docker README with config file mounting examples
- Enhanced troubleshooting guide with config file issues
- Added version bump to 2.8.2
### Additional Files
- Included deployment-engineer and technical-researcher agent files
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Update package.json version from 2.7.23 to 2.8.0
- Update README.md test count from 1,182 to 1,356 tests
- Add comprehensive CHANGELOG entry for v2.8.0
- Document all test improvements and fixes from PR #104🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
Major improvements based on comprehensive test suite review:
Test Fixes:
- Fix all 78 failing tests across logger, MSW, and validator tests
- Fix console spy management in logger tests with proper DEBUG env handling
- Fix MSW test environment restoration in session-management.test.ts
- Fix workflow validator tests by adding proper node connections
- Fix mock setup issues in edge case tests
Test Organization:
- Split large config-validator.test.ts (1,075 lines) into 4 focused files
- Rename 63+ tests to follow "should X when Y" naming convention
- Add comprehensive edge case test files for all major validators
- Create tests/README.md with testing guidelines and best practices
New Features:
- Add ConfigValidator.validateBatch() method for bulk validation
- Add edge case coverage for null/undefined, boundaries, invalid data
- Add CI-aware performance test timeouts
- Add JSDoc comments to test utilities and factories
- Add workflow duplicate node name validation tests
Results:
- All tests passing: 1,356 passed, 19 skipped
- Test coverage: 85.34% statements, 85.3% branches
- From 78 failures to 0 failures
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Bump version from 2.7.22 to 2.7.23 in package.json
- Update version badge in README.md
- Add tests badge showing 1,182 passing tests
- Add comprehensive CHANGELOG entry for v2.7.23 documenting:
- Complete testing infrastructure implementation
- 933 unit tests and 249 integration tests
- All CI test failures fixed
- Test architecture enhancements
- Documentation updates
- Development artifact cleanup
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Update testing-architecture.md with accurate test counts (1,182 tests)
- Document 933 unit tests and 249 integration tests
- Add real code examples and directory structure
- Include lessons learned and common issues/solutions
- Update README.md testing section with comprehensive test overview
- Include test distribution by component
- Add CI test results from run #41
- Update CLAUDE.md with latest development guidance
- Remove AI agent coordination files and progress tracking
- Remove temporary test results and generated artifacts
- Remove diagnostic test scripts from src/scripts/
- Remove development planning documents
- Update .gitignore to exclude test artifacts
- Clean up 53 temporary files total
