A streamlined example of an AI agent built using LangGraph. This project demonstrates the absolute essentials of graph-based LLM orchestration, focusing on a single-node "agent" pattern.
Unlike traditional linear chains, this project uses a stateful graph approach to handle customer inquiries. While simple, it establishes the architecture needed for complex, multi-step agentic workflows.
- State Management: Uses
MessagesStateto track conversation history. - Graph Architecture: Implements a
StateGraphwith a single functional node. - LLM Integration: Direct invocation of a Chat Model within the graph logic.
The workflow follows a basic START ➔ Agent Node ➔ END lifecycle:
- START: The graph receives an input message.
- Agent Node: A function calls the LLM, passing the current state.
- END: The LLM's response is appended to the state and returned to the user.