n8n-mcp
czlonkowski
Independent MCP server giving AI assistants structured access to n8n node docs to build and validate workflows.
What is n8n-mcp?
An MCP server (an independent project, not by n8n) that gives an AI assistant structured access to n8n's node documentation, properties and operations, so the model can build, validate and deploy n8n workflows correctly. It exposes tools like search_nodes and validate_workflow, is self-hostable (npx/Docker/Railway), and optionally connects to your own n8n instance for management. Clients include Claude Desktop and Code, Cursor, Windsurf, VS Code and Codex.
Pros & Cons
Pros
- Clean MIT license on the server code (the n8n Sustainable Use License applies to the n8n platform, not this server)
- Very actively maintained and widely adopted (21.6k stars, daily commits, a 6:1 star/fork ratio)
- Broad client support, plus a zero-setup hosted option for trying it out
Cons
- Most value depends on having an n8n instance (with its own Sustainable Use License) - without it you only get the docs and validation tools
- The hosted variant is freemium (free tier capped at 100 tool calls/day); the open server stays free, but convenience is monetized
- Coverage metrics (1,851 nodes, 99% property coverage, 5,418 passing tests) are the project's own claims
License
MIT (OSI-open)
When it is interesting
Building or debugging n8n automations from inside a coding agent.
When it is too early
If you do not already run n8n, since the deploy features need an instance.
Commercial alternative & related
This repo featured in the 2026-06 edition of the Open-Source AI Radar.
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