{"data":{"slug":"laminar","name":"Laminar","tagline":"Apache-2.0 tracing, evals and signals for AI agents","category":"agents","categoryName":"AI Agents","url":"https://laminar.sh","github":"https://github.com/lmnr-ai/lmnr","pricing":"open-source","hook":"Laminar is an open-source observability platform for AI agents: OpenTelemetry-native tracing with one line of code, plain-English signals that alert on agent behaviour, evals, dashboards and SQL over your traces.","whatsGood":"Apache-2.0 (lmnr-ai/lmnr), release v0.3.2 (2026-10-16). Auto-traces the Vercel AI SDK, Browser Use, Stagehand, LangChain, OpenAI, Anthropic, Gemini and more. Signals let you describe behaviour like an agent stuck in a loop and get a Slack ping when it happens. An eval SDK and CLI run locally or in CI, and an MCP server and CLI let your coding agent query traces with SQL. ★~3.4k.","theCatch":"Self-hosting is a multi-service stack. Signals run an LLM over your agent runs, which adds cost and sends trace content to a model. The hosted Laminar cloud is the main product path. Crowded space next to Langfuse, Opik and LangWatch.","verdict":"Strongest pick when you trace browser and computer-use agents.","addedAt":"2026-10-18","featured":false,"domain":"AI Agents","subSpecialty":"Agents","subcategory":"Evals & Tracing","tags":["self-host","local-first","permissive","evals","observability","active"],"capabilities":[],"surfaces":["Self-host"],"ecosystem":["Multi-platform"],"licenseModel":"Apache-2.0","githubStars":3403,"starsPerWeek":30,"access":"free","archived":false,"repo":{"createdAt":"2024-08-29","pushedAt":"2026-10-18","license":"Apache-2.0","archived":false,"checkedAt":"2026-10-19"}},"related":[{"slug":"claude-code","name":"Claude Code","tagline":"Terminal-first coding agent with deep repository context"},{"slug":"cursor","name":"Cursor","tagline":"The AI-first code editor that understands your codebase"},{"slug":"devin","name":"Devin","tagline":"Autonomous AI engineer for defined engineering tasks"},{"slug":"stagehand","name":"Stagehand","tagline":"AI-native browser automation that mixes code and natural language"},{"slug":"browser-use","name":"Browser Use","tagline":"Open-source framework for LLM-driven browser agents"}],"links":{"self":"/api/gems/laminar","html":"/gems/laminar","markdown":"/gems/laminar.md","category":"/api/gems?category=agents","categoryPage":"/stacks/agents"}}