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n8n MCP 404 in Claude Code? The endpoint is /sse on a v1 trigger
To use your n8n workflows as tools inside Claude Code, add an MCP Server Trigger node, connect a tool node to it over the ai_tool connection, and activate the workflow. Then point Claude Code at the SSE endpoint: on n8n 2.29 with a v1 MCP Server Trigger the URL is http://host:5678/mcp/{path}/sse, not /mcp/{path} (that 404s). Register it with claude mcp add --transport sse. Separate concern: n8n-as-a-server (this post) is the opposite of czlonkowski/n8n-mcp, which lets Claude build workflows for you.