1. **n8n Expression Syntax**
Teaches correct n8n expression syntax and common patterns.
Activates when: Writing expressions, using {{}} syntax, accessing $json/$node variables, troubleshooting expression errors.
Key Features:
- Core variables ($json, $node, $now, $env)
- Critical gotcha: Webhook data is under
$json.body - Common mistakes catalog with fixes
- When NOT to use expressions (Code nodes!)
2. **n8n MCP Tools Expert** (HIGHEST PRIORITY)
Expert guide for using n8n-mcp MCP tools effectively.
Activates when: Searching for nodes, validating configurations, accessing templates, managing workflows.
Key Features:
- Tool selection guide (which tool for which task)
- nodeType format differences (nodes-base. vs n8n-nodes-base.)
- Validation profiles (minimal/runtime/ai-friendly/strict)
- Smart parameters (branch="true" for IF nodes)
- Auto-sanitization system explained
Most Important: Teaches correct MCP tool usage patterns and parameter formats
3. **n8n Workflow Patterns**
Build workflows using 5 proven architectural patterns.
Activates when: Creating workflows, connecting nodes, designing automation.
Key Features:
- 5 proven patterns (webhook processing, HTTP API, database, AI, scheduled)
- Workflow creation checklist
- Real examples from 2,653+ n8n templates
- Connection best practices
- Pattern selection guide
4. **n8n Validation Expert**
Interpret validation errors and guide fixing.
Activates when: Validation fails, debugging workflow errors, handling false positives.
Key Features:
- Validation loop workflow
- Real error catalog
- Auto-sanitization behavior explained
- False positives guide
- Profile selection for different stages
5. **n8n Node Configuration**
Operation-aware node configuration guidance.
Activates when: Configuring nodes, understanding property dependencies, setting up AI workflows.
Key Features:
- Property dependency rules (e.g., sendBody β contentType)
- Operation-specific requirements
- AI connection types (8 types for AI Agent workflows)
- Common configuration patterns
6. **n8n Code JavaScript**
Write effective JavaScript code in n8n Code nodes.
Activates when: Writing JavaScript in Code nodes, troubleshooting Code node errors, making HTTP requests with $helpers, working with dates.
Key Features:
- Data access patterns ($input.all(), $input.first(), $input.item)
- Critical gotcha: Webhook data under
$json.body - Correct return format:
[{json: {...}}] - Built-in functions ($helpers.httpRequest(), DateTime, $jmespath())
- Top 5 error patterns with solutions (covering 62%+ of failures)
- 10 production-tested patterns
7. **n8n Code Python**
Write Python code in n8n Code nodes with proper limitations awareness.
Activates when: Writing Python in Code nodes, need to know Python limitations, working with standard library.
Key Features:
- Important: Use JavaScript for 95% of use cases
- Python data access (_input, _json, _node)
- Critical limitation: No external libraries (requests, pandas, numpy)
- Standard library reference (json, datetime, re, etc.)
- Workarounds for missing libraries
- Common Python patterns for n8n
8. **n8n Production Readiness** (NEW)
Dynamic tier system for right-sizing n8n workflow hardening.
Activates when: Building any n8n workflow, deploying to production, debugging silent failures, handling client projects.
Key Features:
- Tier system: Match hardening to actual risk (Tier 1-3)
- Smart detection: Infers appropriate tier from context
- Autopilot mode: Adapts silently as you build
- The 80/20 rule: Core logic is 20%, hardening is 80% for production
- Entry-point validation patterns
- External logging (Supabase/Postgres)
- HTTP status codes (400, 401, 404, 500)
- Pre-deployment checklists by tier
- Example workflows for each tier
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