Entry Points and Exit Points

Every process needs a beginning and an end.

Visualizing Boundaries

graph LR
    Entry((START)) --> A[Analyze Input]
    A --> B[Route]
    B --> C[Process]
    C --> End((END))
    
    style Entry fill:#fff9c4,stroke:#fbc02d
    style End fill:#ffcdd2,stroke:#d32f2f

The Entry Point

You must define at least one entry point. graph.set_entry_point("node_name")

This is the "Reception Desk" of your specific workflow. It receives the raw input.

The Exit Point (END)

END is a virtual node provided by LangGraph. When an edge points to END, the graph stops.

• You can have multiple edges pointing to END.
  • SuccessNode -> END
  • FailureNode -> END
  • MaxRetriesNode -> END