agisotadev/langchainjs

LangChain.js is a TypeScript/JavaScript library that provides a modular, framework‑agnostic interface for chaining together LLMs, data sources, and external tools — simplifying the creation of context‑aware AI applications such as retrieval‑augmented generation, agent workflows, and production‑grade LLM services. It’s intended for developers and engineers who want to prototype, experiment with, and ship LLM‑powered features (chatbots, data‑augmented assistants, autonomous agents, etc.) while leveraging a vibrant ecosystem and tools like LangSmith for monitoring and scaling.