lmnr
Active·★ 3.0k·Apache-2.0·Updated 2026-05-29
★ Trending★ Essential
Laminar - open-source observability platform purpose-built for AI agents. YC S24.
Laminar is an open-source observability platform specifically designed for AI agents. It provides comprehensive tools for tracing, evaluation, and monitoring of AI agent behavior and performance.
#AI Observability#Tracing#LLM Evals#AI Monitoring#OpenTelemetry
01
Features
01OpenTelemetry-native tracing SDK with support for various AI SDKs (Vercel AI SDK, LangChain, OpenAI, etc.).
02Unopinionated, extensible SDK and CLI for running evals, with a UI for visualizing and comparing results.
03AI monitoring with the ability to define events using natural language descriptions to track agent behavior.
04SQL access to all collected data (traces, metrics, events) via a built-in SQL editor and API.
05High-performance architecture written in Rust, featuring a custom real-time engine and ultra-fast full-text search.
02
Compatibility
Vercel AI SDK
Supported
Verified via docs
LangChain
Supported
Verified via docs
OpenAI
Supported
Verified via docs
Anthropic
Supported
Verified via docs
Gemini
Supported
Verified via docs
Stagehand
Supported
Verified via docs
03
Quick start
1
$ git clone https://github.com/lmnr-ai/lmnr
2
$ cd lmnr
3
$ docker compose up -d
04
Use cases
↳Debugging and understanding the execution flow and internal states of AI agents.
↳Evaluating the performance, quality, and reliability of AI agents and their responses.
↳Monitoring AI agents in production for anomalies, logical errors, and custom business behaviors.
05
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