logfire

logfire is an MCP server for Claude Code from pydantic/skills. Its token cost is not measured, scanned A, original, MIT.

A remotely hosted MCP server named logfire, configured from the pydantic/skills project. MCP is a way for an agent to use tools provided by another service.

In plain words
What is it for?
It connects the agent to the remote Logfire service, but the available information does not identify concrete jobs.
Why use it?
The description does not say which logfire tools are available or what problem they solve.

MCP server for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: listed in a Claude config.

Part of the logfire plugin — 10 skills, 7 commands, 1 MCP server shipped together

Good fit It connects the agent to the remote Logfire service, but the available information does not identify concrete jobs.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/pydantic/skills/logfire-logfire
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/pydantic/skills

Made for: Claude Code.

Or install logfire, the plugin that ships this one along with the rest of its 10 skills, 7 commands, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for logfire

README.md
[![agentmods](https://agentmods.dev/badge/mcp/pydantic/skills/logfire-logfire/github.svg)](https://agentmods.dev/mcp/pydantic/skills/logfire-logfire)
Your own site
<a href="https://agentmods.dev/mcp/pydantic/skills/logfire-logfire"><img src="https://agentmods.dev/badge/mcp/pydantic/skills/logfire-logfire/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for logfire

Your own site · 80×15
<a href="https://agentmods.dev/mcp/pydantic/skills/logfire-logfire"><img src="https://agentmods.dev/badge/mcp/pydantic/skills/logfire-logfire.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

logfire scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/logfire/.mcp.json · 6 lines

What it actually says

{
  "logfire": {
    "type": "http",
    "url": "${LOGFIRE_MCP_URL:-https://logfire-us.pydantic.dev/mcp}"
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 6 lines scan A 8be413dacbea

Subscribe to this mod's changes

logfire is an MCP server published in the GitHub repository pydantic/skills (151 stars, last pushed 9d ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

logfire compared with mcp servers from other repositories

logfire next to 6 mcp servers from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
logfirepydantic/skillsMCP server1519d agoMITA—Claude Code
docs-langchainlangchain-ai/langchainMCP server149kyesterdayMITA—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
component-explorermicrosoft/vscodeMCP server195kyesterdayMITA—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
codex_message_boardopenai/codexMCP server133kyesterdayApache-2.0A—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
playwright-testmicrosoft/playwrightMCP server99kyesterdayApache-2.0A—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
reference-langchainlangchain-ai/langchainMCP server149kyesterdayMITA—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
reamorluto/reaMCP server435kyesterdayMITA—Claude Code