Cursor

Loggerhead ships an MCP server. Its tools let your coding tool read your logs, metrics, traces, and lint findings, mark a finding fixed, and change the lint rules with a reason that you can undo in the app. The server talks to the Loggerhead engine on your Mac over 127.0.0.1. Nothing leaves the machine.

Add it with one click

1. Open Loggerhead and click Settings in the sidebar.
2. Open the AI tab.
3. In the AI coding tools card, click Add next to Cursor.

Loggerhead writes the server into ~/.cursor/mcp.json and keeps every other entry in that file. It leaves a copy of the previous file beside it with the extension .bak. Restart Cursor, and the Loggerhead tools appear.

The server finds the engine by itself. You do not set a port, and the entry survives a restart.

Add it by hand

1. Open Cursor Settings → MCP.
2. Click Add new MCP server.
3. Paste this configuration.

mcp.json

{
  "mcpServers": {
    "loggerhead": {
      "command": "/Applications/Loggerhead.app/Contents/Resources/loggerhead-mcp"
    }
  }
}

4. Save. Cursor shows loggerhead with a green dot when the server runs.

Try it

In the chat, ask about a failing request in your app. Cursor calls the Loggerhead tools and answers from your logs and traces.

To send the project’s own logs, metrics, and traces to Loggerhead, paste the prompt from Connect your project with one prompt.

See Tools reference for what each tool accepts.