Implementing ReWOO with LangGraph
LangGraph is an open source framework designed for building stateful, multi-agent applications using LLMs. It extends the capabilities of the LangChain ecosystem by introducing a directed graph model, where nodes represent functions (including LLM invocations) and edges represent transitions between states based on logic, conditions, or memory. Unlike traditional sequential chains, LangGraph allows complex workflows involving conditional branching, loops, memory passing, and asynchronous agent coordination. LangGraph is particularly useful for implementing systems where interactions are dynamic, iterative, and dependent on state changes. This includes multi-agent collaboration, decision trees, retrieval-augmented generation with control flow, and autonomous agents that need to revisit prior steps or loop through subtasks until certain goals are met.
LangGraph leverages concepts from graph theory and automata, representing execution flows as state...