Skip to main content

Documentation Index

Fetch the complete documentation index at: https://laminar.sh/docs/llms.txt

Use this file to discover all available pages before exploring further.

Laminar is an open-source observability platform purpose-built for AI agents. You can trace every call to an LLM, tool execution and custom functions. Laminar goes beyond tracing and is deeply focused on helping you properly use captured data and extract insights from it:
  • During development, Laminar allows you to rollout and replay agents from different parts of the captured trace significantly speeding up the development process.
  • In production, with Laminar you can describe patterns and errors in natural language and track it across all your traces, to measure real behavior and user interactions with your agents.

Tracing

Trace LLM calls, tool use, and custom functions. First-class support for AI SDK, LangChain, Browser Use, Stagehand, and more.

Signals

Describe outcomes and failures in plain language. Laminar reads every trace and produces structured events you can query, cluster, and alert on.

Evaluations

Run evals against datasets locally or in CI. Catch regressions before they ship.

Datasets & Labeling

Build evaluation datasets from production traces.

Playground

Replay any traced span. Swap prompts or models and compare results side by side.

Platform

Realtime traces, full-text search, raw SQL access to all your data, and dashboards for exploring traces however you need to.