Files

czlonkowski a688ad3d14 fix: resolve Docker stdio initialization timeout issue

- Add InitializeRequestSchema handler to MCP server
- Implement stdout flushing for Docker environments
- Create stdio-wrapper for clean JSON-RPC communication
- Update docker-entrypoint.sh to prevent stdout pollution
- Fix logger to check MCP_MODE before level check

These changes ensure the MCP server responds to initialization requests
within Claude Desktop's 60-second timeout when running in Docker.

2025-06-17 09:12:01 +02:00

2.3 KiB

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🚀 Claude Desktop Can Now Build Perfect n8n Workflows - Thanks to MCP

Hey n8n community! 👋

TL;DR: I built an MCP server that gives Claude Desktop complete, up-to-date knowledge of all 525 n8n nodes. Now it can build workflows perfectly on the first try. What used to take 45 minutes with errors now takes 3 minutes with zero mistakes.

The Problem

Remember when Claude would guess node names wrong and mix up properties?

Me: "Create a Slack webhook workflow"
Claude: "Use slackNode with message property..."
Me: "It's 'slack' with 'text' property..."
Claude: "Oh, webhookTrigger then?"
Me: "Just 'webhook'..."

45 painful minutes later, maybe you'd have a working workflow.

The Solution: n8n-MCP

Now Claude has direct access to:

✅ All 525 n8n nodes with complete documentation
✅ Every property and operation (no more guessing!)
✅ Working examples for common tasks
✅ Real-time validation before deployment

Result: 45 minutes → 3 minutes, 6 errors → 0 errors

Quick Installation (5 Minutes)

Add this to your Claude Desktop config:

{
  "mcpServers": {
    "n8n-mcp": {
      "command": "docker",
      "args": [
        "run", "--rm", "-i",
        "--pull", "always",
        "ghcr.io/czlonkowski/n8n-mcp:latest"
      ]
    }
  }
}

Config locations:

Mac: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

Restart Claude Desktop and you're done! 🎉

What You Can Do Now

Ask Claude to:

"Build a workflow that monitors RSS feeds and posts to Discord"
"Create an API endpoint that validates data and saves to Postgres"
"Set up a daily report that pulls from multiple sources"

Claude will deliver working JSON you can paste directly into n8n.

More Options & Details

🔗 GitHub: github.com/czlonkowski/n8n-mcp

Local installation options
Full documentation
MIT licensed (free forever)

Feedback Welcome!

What workflow challenges do you face? What would make Claude even better at n8n? Drop a comment or open an issue on GitHub.

Let's make n8n + AI workflow creation delightful! ⭐

P.S. - Claude even discovered features I didn't know about, like Google Sheets' built-in duplicate detection. Sometimes the AI teaches the human! 😄

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