LangGraph provides a graph-based abstraction for designing AI agent workflows. Developers define nodes that represent prompts, tools, data sources, or decision logic, then connect these nodes with edges to form a directed graph. At runtime, LangGraph traverses the graph, executing LLM calls, API requests, and custom functions in sequence or in parallel. Built-in support for caching, error handling, logging, and concurrency ensures robust agent behavior. Extensible node and edge templates let users integrate any external service or model, making LangGraph ideal for building chatbots, data pipelines, autonomous workers, and research assistants without complex boilerplate code.

LangGraph provides a flexible multi-agent system built on directed graphs, where each node represents an AI agent specialized in tasks like code synthesis, review, debugging, or chat. Users define workflows in JSON or YAML, specifying agent roles and communication paths. LangGraph manages task distribution, message routing, and error handling across agents. It supports plugging into various LLM APIs, extensible custom agents, and visualization of execution flows. With CLI and API access, LangGraph simplifies building complex automated pipelines for software development, from initial code generation to continuous testing and interactive developer assistance.