# n8n

> Comprehensive n8n workflow automation expertise. Use when building, debugging, or optimizing n8n workflows, including node configuration, expressions, code nodes (JavaScript/Python), validation, and workflow patterns.

- Author: royengel
- Repository: royhenengel/Claude-Customizations
- Version: 20260122095654
- Stars: 0
- Forks: 0
- Last Updated: 2026-02-06
- Source: https://github.com/royhenengel/Claude-Customizations
- Web: https://mule.run/skillshub/@@royhenengel/Claude-Customizations~n8n:20260122095654

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name: n8n
description: Comprehensive n8n workflow automation expertise. Use when building, debugging, or optimizing n8n workflows, including node configuration, expressions, code nodes (JavaScript/Python), validation, and workflow patterns.
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# n8n Workflow Automation

Complete reference for building n8n workflows.

## Table of Contents

1. [Quick Start](#quick-start)
2. [Reference Modules](#reference-modules)
3. [When to Use Each](#when-to-use-each)

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## Quick Start

For common tasks, start here:

| Task | Reference |
|------|-----------|
| Build a new workflow | `ref/n8n-workflow-patterns/` |
| Configure a node | `ref/n8n-node-configuration/` |
| Write expressions | `ref/n8n-expression-syntax/` |
| JavaScript Code node | `ref/n8n-code-javascript/` |
| Python Code node | `ref/n8n-code-python/` |
| Debug validation errors | `ref/n8n-validation-expert/` |
| Use MCP tools | `ref/n8n-mcp-tools-expert/` |

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## Reference Modules

### Workflow Patterns (`ref/n8n-workflow-patterns/`)
Proven architectural patterns from real workflows:
- Webhook Processing (most common)
- HTTP API Integration
- Database Operations
- AI Agent Workflows
- Scheduled Tasks

### Node Configuration (`ref/n8n-node-configuration/`)
How to configure n8n nodes correctly:
- Common patterns and operations
- Built-in functions reference
- Data access patterns
- Error handling

### Expression Syntax (`ref/n8n-expression-syntax/`)
n8n expression language:
- Syntax and operators
- Built-in variables ($json, $input, etc.)
- Common mistakes to avoid

### Code Nodes
- **JavaScript** (`ref/n8n-code-javascript/`): Writing JS in Code nodes
- **Python** (`ref/n8n-code-python/`): Writing Python in Code nodes

### Validation (`ref/n8n-validation-expert/`)
Debugging and fixing validation errors:
- Error catalog with fixes
- Common error patterns
- False positives guide

### MCP Tools (`ref/n8n-mcp-tools-expert/`)
Using n8n MCP server tools effectively.

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## When to Use Each

| Scenario | Use This |
|----------|----------|
| "How do I structure this workflow?" | Workflow Patterns |
| "Node isn't working right" | Node Configuration |
| "Expression syntax error" | Expression Syntax |
| "Need custom logic" | Code Nodes (JS or Python) |
| "Validation error I don't understand" | Validation Expert |
| "Using n8n via MCP" | MCP Tools Expert |