21st.dev for Cursor

dev.21st/mcp

Find UI components and themes, retrieve code, and generate with hosted 21st AI when enabled.

client:Cursor transport:streamable-http

Install 21st.dev in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json

{
  "mcpServers": {
    "mcp": {
      "url": "https://21st.dev/api/mcp"
    }
  }
}

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs