I have connected n8n MCP to Claude, and the setup looks right, but every time I try to request anything, I am getting MCP error 1004: Network error connecting to n8n API. Have double-checked all with API, all looks right. I am on the starter plan, which should support API. Has anyone experienced anything similar?
you could try use GitHub - modelcontextprotocol/inspector: Visual testing tool for MCP servers see if u get the same error claude is?
or maybe cursor ide, I’ve also tested by adding a client node in n8n to call the mcp server, this helped on debugging a few issues.
1 Like
Fixed MCP Error 1004 when connecting Claude to n8n Cloud - URL format
Despite having a valid API key, Claude could not connect to my n8n Cloud instance. The MCP server was receiving 404 errors.
The critical fix was adding /v1/ to the n8n API URL path in the Claude configuration.
Change: “N8N_API_URL”: “https://your-instance.app.n8n.cloud/api/”
To: “N8N_API_URL”: “https://your-instance.app.n8n.cloud/api/v1/”
2 Likes
This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.