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Laminar
Laminar provides open-source observability tools designed for applications built with AI agents.
About Laminar
Laminar is an open-source observability platform for applications built with AI agents. It covers tracing, behavior signals, evaluations, dashboards, and data annotation for agent runs. The tracing SDK is OpenTelemetry-native and can be added with one line of code for frameworks including Vercel AI SDK, Browser Use, Stagehand, LangChain, OpenAI, Anthropic, and Gemini. The repository also documents Docker Compose self-hosting. The source recommends the managed platform at laminar.sh for production, and it does not state pricing.
Key features
- OpenTelemetry-native tracing SDK, added with one line of code
- Signals defined in plain English, with Slack notifications when they occur
- Evals SDK and CLI for running locally or in CI/CD pipelines
- Dashboard builder for traces, metrics, and events with custom SQL
- Dataset creation and data annotation interface for evals
- Self-hosting with Docker Compose
Best for: Developers building AI agents who need to trace, evaluate, and monitor agent runs and may want to self-host the observability stack.
Good for
- Open source, with the repository publicly available on GitHub
- OpenTelemetry-native tracing with one-line setup for several named agent frameworks
- Can be self-hosted with Docker Compose
Watch out for
- The lightweight Docker Compose setup is described as suited to quickstart or light usage; the source recommends the managed platform or the full Compose file for production
- Self-hosted use requires configuring the SDK with the correct baseUrl and ports
Laminar at a glance
- Website
- github.com/lmnr-ai/lmnr
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Laminar FAQ
Can Laminar be self-hosted?
Yes. The repository describes starting the services with docker compose up -d. The UI is then available at localhost:5667. The source recommends the managed platform or the full Compose file for production environments.
Which agent frameworks does the tracing SDK support?
The source names Vercel AI SDK, Browser Use, Stagehand, LangChain, OpenAI, Anthropic, and Gemini, and says it supports more than these.
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