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Cursor

lean 4 mcp for Cursor

io.github.mrfentmen/lean-4-mcp

Lean 4 MCP: 20 real tools to read, check, lint, scaffold, build and run Lean 4 code.

client:Cursor transport:stdio runtime:npm

Install lean 4 mcp in Cursor

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

{
  "mcpServers": {
    "lean-4-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/lean-4-mcp"
      ]
    }
  }
}

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

lean 4 mcp in other clients