Run the local guides-gdf-mcp server with your API key - not the hosted OAuth URL.

1. Generate API key at create.guides.co/ai.
2. Build the server: clone the Guides repo → guides-mcp/ → npm install && npm run build.
3. Cursor → Settings → MCP (or Claude Desktop config) - stdio with GUIDES_GDF_API_BASE and GUIDES_GDF_API_KEY.

Full steps: Guides MCP setup.

Verify: "List my Guides notebooks." → guides_catalog.