Claude Code

Loggerhead ships an MCP server. It gives your coding tool five read-only tools: search logs, query metrics, search traces, get one trace, and get the receiver addresses. 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 Collectors in the sidebar.
2. Select Local OTLP receiver.
3. In the AI coding tools card, click Add next to Claude Code.

Loggerhead writes the server into ~/.claude.json and keeps every other entry in that file. It leaves a copy of the previous file beside it with the extension .bak. Restart Claude Code, 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

Run this once in a terminal.

claude mcp add loggerhead -- "/Applications/Loggerhead.app/Contents/Resources/loggerhead-mcp"

Restart Claude Code. Type /mcp to confirm that loggerhead shows as connected.

Try it

Ask Claude Code:

checkout is returning 500s locally. why?

Claude Code calls query_logs with the service and severity, then get_trace on the trace ID it finds, and answers from what your app actually did.

Remove it

claude mcp remove loggerhead

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.