Langfuse

🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

🪢 Auto-generated Java Client for Langfuse API

Agent Skills for Langfuse, the open source LLM engineering platform for tracing, prompt management, and evaluation

🪢 Langfuse JS/TS SDK

🪢 Langfuse Python SDK

Community-maintained Kubernetes config and Helm chart for Langfuse

End-to-end Langfuse workshop using a TypeScript Agent to teach the AI engineering loop: tracing, prompt management, monitoring, datasets, experiments, and evaluation.

Trace OpenAI Codex CLI coding sessions, agent turns, tool calls, token usage, and subagents with Langfuse for comprehensive observability.

Trace Pi coding agent sessions with Langfuse — agent turns, model generations, token usage with cache and reasoning splits, cost, tool calls, and nested subagents.