czlonkowski
533b1acc20
feat: implement comprehensive workflow validation (v2.5.0)
Major Features:
- Add ExpressionValidator for n8n expression syntax validation
- Add WorkflowValidator for complete workflow structure validation
- Add three new MCP tools: validate_workflow, validate_workflow_connections, validate_workflow_expressions
Validation Capabilities:
- ✅ Detects workflow cycles (infinite loops)
- ✅ Validates n8n expressions with syntax checking
- ✅ Checks node references in expressions
- ✅ Identifies orphaned nodes and missing connections
- ✅ Supports multiple node type formats (n8n-nodes-base, @n8n/n8n-nodes-langchain)
- ✅ Provides actionable error messages and suggestions
Testing & Analysis:
- Add test scripts for workflow validation
- Add template validation testing
- Add validation summary analysis tool
- Fixed expression validation false positives
- Handle node type normalization correctly
Results from testing 50 real n8n templates:
- 70.9% of errors are from informal sticky notes
- Expression validation catches real syntax issues
- Cycle detection prevents runtime infinite loops
- Successfully validates both core and LangChain nodes
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
2025-06-24 14:45:36 +02:00
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