21 lines
559 B
Python
21 lines
559 B
Python
"""
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LangGraph agent state — defines the shape of the state object that flows
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through every node in the agent graph.
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"""
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from typing import Annotated, TypedDict
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from langgraph.graph.message import add_messages
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class AgentState(TypedDict):
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"""
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The single source of truth that travels through every node in the graph.
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`messages` uses LangGraph's `add_messages` reducer, which:
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- Appends new messages to the list.
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- Replaces messages with the same ID (useful for tool-call results).
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"""
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messages: Annotated[list, add_messages]
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