aafter_model() — langchain Function Reference

Architecture documentation for the aafter_model() function in types.py from the langchain codebase.

Function python LangChainCore LanguageModelBase

Entity Profile

LangChainCore→ LanguageModelBase→ aafter_model() — langchain Function Reference

Dependency Diagram

graph TD
  7e87e2e9_5774_ec7a_8446_01eb6604c98e["aafter_model()"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  7e87e2e9_5774_ec7a_8446_01eb6604c98e -->|defined in| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  style 7e87e2e9_5774_ec7a_8446_01eb6604c98e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/langchain/agents/middleware/types.py lines 465–476

    async def aafter_model(
        self, state: StateT, runtime: Runtime[ContextT]
    ) -> dict[str, Any] | None:
        """Async logic to run after the model is called.

        Args:
            state: The current agent state.
            runtime: The runtime context.

        Returns:
            Agent state updates to apply after model call.
        """