logfire: AI observability platform for production LLM and agent systems

by pydantic · Agent Tool · ★ 4.5k

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install logfire

pip install logfire

Taken from the project's README on GitHub. Check the security audit before running it.

Security audit verdict: SAFE · quality 66/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agent-observabilityaiai-observabilityai-toolsevalsfastapillm-observabilityloggingmetricsobservability

Quick Facts

Stars4,537
Forks354
LanguagePython
CategoryAgent Tool
LicenseMIT
Quality Score66/100
Open Issues239
Last Updated2026-11-07
Created2024-04-23
Platformspython
Est. Tokens~14k

About logfire

Pydantic Logfire — Know more. Build faster. From the team behind Pydantic Validation, Pydantic Logfire is an observability platform built on the same belief as our open source library — that the most powerful tools can be easy to use.

Compatible Skills

These tools work well together with logfire for enhanced workflows:

  • openinference — semantic(0.26)+complementary+rare_topics+same_lang+similar_pop+shared_platform (63%)
  • pydantic-deepagents — semantic(0.24)+complementary+rare_topics+same_lang+similar_pop+shared_platform (62%)
  • full-stack-ai-agent-template — semantic(0.24)+complementary+rare_topics+same_lang+similar_pop+shared_platform (58%)
  • golf — semantic(0.21)+complementary+rare_topics+same_lang+similar_pop+shared_platform (57%)

logfire alternative? Top 6 similar tools

Looking for a logfire alternative? If you're comparing logfire with other agent tool tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

  • lmnr by lmnr-ai · ⭐ 3.5k

    Laminar - open-source observability platform purpose-built for AI agents. YC S24.

  • voltagent by VoltAgent · ⭐ 10.9k

    AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework

  • failproofai by FailproofAI · ⭐ 8.2k

    Observability and enforcement for AI agent harnesses. Capture every run and runtime reliability with policy en

  • honcho by plastic-labs · ⭐ 7.0k

    Memory library for building stateful agents

  • Kiln by Kiln-AI · ⭐ 5.3k

    Build, Evaluate, and Optimize AI Systems. Includes evals, RAG, agents, fine-tuning, synthetic data generation,

  • mcp-context-forge by IBM · ⭐ 4.8k

    An AI Gateway, registry, and proxy that sits in front of any MCP, A2A, or REST/gRPC APIs, exposing a unified e

More Agent Tool Tools

Explore other popular agent tool tools:

View all Agent Tool tools →

Popular Python Agent Tools

How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

View on GitHub → Browse Agent Tool tools