logfire

How to start

1. Paste the command into Claude Code and press Enter.
2. Set LOGFIRE_MCP_URL in your shell, then restart Claude Code.
3. Try it: type debug or dev-session.

What it adds

4 commands · 6 skills · 1 MCP server

Commands Type it in Claude Code

• debugUse Logfire traces to investigate errors and debug production issues
• dev-sessionStart a local Logfire dev session to send traces from your running app for debugging
• instrumentDetect languages and frameworks in the current project and add Logfire instrumentation
• queryQuery Logfire telemetry data interactively or add query capabilities to code

Skills Claude loads these when the task fits

• logfire-evalsRun offline Python (`pydantic_evals`) or Node.js (`logfire/evals`) evaluations and review them in Logfire. Also redirect existing Braintrust `Eval()` suites. U…
• logfire-infrastructureMonitor hosts, Docker containers, Kubernetes clusters, database/queue/cache servers, and cloud-provider metrics with Pydantic Logfire — no application code req…
• logfire-instrumentationAdd Pydantic Logfire observability to application code — traces, logs, metrics, and AI/agent spans. Use when the user asks to add or configure Logfire, observa…
• logfire-queryQuery and analyze Logfire telemetry data — traces, logs, spans, metrics, summaries, and SQL results. Use this skill when the user asks to "query logfire", "sea…
• logfire-setupEntry point for Pydantic Logfire — an observability, monitoring, and evals platform. Use this skill when the user asks to "set up Logfire", "add Logfire to my…
• logfire-uiOpen or return Logfire project pages, live views, trace links, and Explore pages in the Codex browser without querying telemetry first. Use this skill when the…

MCP servers Connections it sets up for you

• logfireRemote server at ${LOGFIRE_MCP_URL:-https://logfire-us.pydantic.dev/mcp}

Read from the plugin's own files in pydantic/skills, 26 Oct 2026.

What it needs

• LOGFIRE_MCP_URLSet it in your shell before you start Claude Code. Read by its logfire MCP server.

Taken from the plugin's own MCP configuration.