langgraphjs

Why we included this project

For JavaScript and TypeScript teams, LangGraph is a low-level library for building agent workflows, and its practical value shows up when things go wrong. It models a run as a graph with shared state, so an agent that crashes mid-task resumes from its last checkpoint instead of starting over, and memory carries across sessions rather than resetting each time. Runs can also pause to wait for a human decision before continuing, which makes human-in-the-loop review practical. That combination of durable execution and explicit interrupts is what makes it workable for agents doing real work against external systems over long runs. It is not a ready-made assistant: you bring your own tools and LLM calls, and LangGraph provides the structure to shape multi-step reasoning into something predictable. If LangChain already supplies your components, LangGraph is the layer that decides how they flow together.