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Implements comprehensive guidance for using n8n-mcp MCP tools effectively. This is the HIGHEST PRIORITY skill that addresses the 20% MCP tool failure rate. Files created: - 5 evaluations testing tool selection, nodeType formats, validation, and smart parameters - SKILL.md (505 lines) - Core tool usage guide with telemetry insights - SEARCH_GUIDE.md (243 lines) - Node discovery tools (search, essentials vs info) - VALIDATION_GUIDE.md (377 lines) - Configuration validation and auto-sanitization - WORKFLOW_GUIDE.md (385 lines) - Workflow management with 15 operation types - README.md - Skill metadata emphasizing highest priority Key features: - Tool selection guide with success rates (search_nodes 99.9%, get_node_essentials 91.7%) - nodeType format distinction (nodes-base.* vs n8n-nodes-base.*) - Validation profiles explained (minimal/runtime/ai-friendly/strict) - Smart parameters for IF/Switch nodes (branch="true", case=0) - Auto-sanitization system for operator structures - Telemetry insights (56s between edits, 18s search→essentials, 23s+58s validate→fix) - AI connection types (8 types documented) Total: ~1,650 lines across 10 files Based on analysis of 447,557 real MCP tool usage events. 🤖 Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en
109 lines
3.0 KiB
Markdown
109 lines
3.0 KiB
Markdown
# n8n MCP Tools Expert
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Expert guide for using n8n-mcp MCP tools effectively.
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---
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## Purpose
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Teaches how to use n8n-mcp MCP server tools correctly, fixing the 20% failure rate when using tools incorrectly.
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## Activates On
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- search nodes
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- find node
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- validate
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- MCP tools
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- template
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- workflow
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- n8n-mcp
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- tool selection
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## File Count
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5 files, ~1,150 lines total
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## Priority
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**HIGHEST** - Fixes 20% MCP tool failure rate
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## Dependencies
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**n8n-mcp tools**: All of them! (40+ tools)
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**Related skills**:
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- n8n Expression Syntax (write expressions for workflows)
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- n8n Workflow Patterns (use tools to build patterns)
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- n8n Validation Expert (interpret validation results)
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- n8n Node Configuration (configure nodes found with tools)
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## Coverage
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### Core Topics
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- Tool selection guide (which tool for which task)
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- nodeType format differences (nodes-base.* vs n8n-nodes-base.*)
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- Validation profiles (minimal/runtime/ai-friendly/strict)
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- Smart parameters (branch, case for multi-output nodes)
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- Auto-sanitization system
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- Workflow management (15 operation types)
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- AI connection types (8 types)
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### Tool Categories
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- Node Discovery (search, list, essentials, info)
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- Configuration Validation (minimal, operation, workflow)
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- Workflow Management (create, update, validate)
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- Template Library (search, get)
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- Documentation (tools, database stats)
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## Evaluations
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5 scenarios (100% coverage expected):
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1. **eval-001**: Tool selection (search_nodes)
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2. **eval-002**: nodeType format (nodes-base.* prefix)
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3. **eval-003**: Validation workflow (profiles)
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4. **eval-004**: essentials vs info (5KB vs 100KB)
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5. **eval-005**: Smart parameters (branch, case)
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## Key Features
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✅ **Data-Driven**: Based on 447,557 real MCP tool events
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✅ **Telemetry Insights**: Actual usage patterns (56s between edits, 18s between search/essentials)
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✅ **Critical Mistakes**: Highlights 20% failure rate issues
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✅ **Smart Parameters**: Teaches semantic branch/case routing
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✅ **Auto-Sanitization**: Explains automatic fixes
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✅ **Comprehensive**: Covers all 40+ tools
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## Files
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- **SKILL.md** (480 lines) - Core tool usage guide
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- **SEARCH_GUIDE.md** (220 lines) - Node discovery tools
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- **VALIDATION_GUIDE.md** (250 lines) - Validation tools and profiles
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- **WORKFLOW_GUIDE.md** (200 lines) - Workflow management
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- **README.md** (this file) - Skill metadata
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## Success Metrics
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**Expected outcomes**:
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- Correct nodeType formats (nodes-base.* for search)
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- get_node_essentials preferred over get_node_info
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- Validation profiles used correctly
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- Smart parameters for IF/Switch nodes
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- 20% failure rate reduced to <5%
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## Critical Insights
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**From MCP Testing Log**:
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- search → essentials: 9,835 occurrences, 18s avg
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- validate → fix: 7,841 loops, 23s thinking, 58s fixing
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- update_partial: 38,287 uses, 56s between edits
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- get_node_info: 20% failure rate (use essentials!)
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## Last Updated
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2025-10-20
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---
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**Part of**: n8n-skills repository
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**Conceived by**: Romuald Członkowski - [www.aiadvisors.pl/en](https://www.aiadvisors.pl/en)
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