once for Cursor

io.github.aurumflux20/once-kernel

Run a side effect exactly once under retries, redelivery, and concurrent workers.

client:Cursor transport:stdio runtime:pypi

Install once in Cursor

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

{
  "mcpServers": {
    "once-kernel": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "once-kernel"
      ]
    }
  }
}

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