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    PythonlanggraphconstantsSTART
    Attribute●Since v0.1

    START

    The first (maybe virtual) node in graph-style Pregel.

    Copy
    START = sys.intern('__start__')

    Used in Docs

    • Build a custom RAG agent with LangGraph
    • Build a custom SQL agent
    • Build a multi-source knowledge base with routing
    • Custom workflow
    • Frontend
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    View source on GitHub