{"repo":"langfuse/langfuse-js","free":true,"listed":false,"github":"https://github.com/langfuse/langfuse-js","clone":"git clone https://github.com/langfuse/langfuse-js.git","description":"🪢 Langfuse JS/TS SDKs - Instrument your LLM app and get detailed tracing/observability. Works with any LLM or framework","language":"TypeScript","stars":156,"topics":["javascript","langfuse","llmops","observability","sdk-js","typescript"],"license":null,"category":"analytics","readme_excerpt":"langfuse-js Modular mono repo for the Langfuse JS/TS client libraries. Packages [!IMPORTANT] The SDK was rewritten in v5 and released in March 2026. Refer to the v5 migration guide for instructions on updating your code. The unscoped npm packages langfuse , langfuse-core , langfuse-node , and langfuse-langchain belong to the legacy v3 SDK. For new integrations use the @langfuse/ scoped packages below — start with @langfuse/tracing + @langfuse/otel for tracing. Package NPM Description Environments --------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------- --------------------------------------------------------- ------------ @langfuse/client Langfuse API client for universal JavaScript environments Universal JS @langfuse/browser Langfuse browser SDK for public-key score ingestion Browser @langfuse/tracing Langfuse instrumentation methods based on OpenTelemetry Node.js 20+ @langfuse/otel Langfuse OpenTelemetry export helpers Node.js 20+ @langfuse/openai Langfuse integration for OpenAI SDK Universal JS @langfuse/langchain Langfuse integration for LangChain Universal JS @langfuse/vercel-ai-sdk Langfuse integration for AI SDK v7 Universal JS Documentation - Docs - Reference - LLM/agent-readable docs index Development This is a monorepo managed with pnpm. See CONTRIBUTING.md for detailed development instructions. Quick start: License MIT","default_branch":null,"files":null,"tree":[],"storefront":"/r/langfuse","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/langfuse/langfuse-js/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}