on_agent_action() — langchain Function Reference

Architecture documentation for the on_agent_action() function in stdout.py from the langchain codebase.

Function python Observability TelemetryUtilities

Entity Profile

Observability→ TelemetryUtilities→ on_agent_action() — langchain Function Reference

Dependency Diagram

graph TD
  6d45cae6_dc82_8565_0075_94e95353b674["on_agent_action()"]
  dcf2a9b2_8ab4_fbe0_5f57_ef548417d10e["StdOutCallbackHandler"]
  6d45cae6_dc82_8565_0075_94e95353b674 -->|defined in| dcf2a9b2_8ab4_fbe0_5f57_ef548417d10e
  style 6d45cae6_dc82_8565_0075_94e95353b674 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/callbacks/stdout.py lines 57–67

    def on_agent_action(
        self, action: AgentAction, color: str | None = None, **kwargs: Any
    ) -> Any:
        """Run on agent action.

        Args:
            action: The agent action.
            color: The color to use for the text.
            **kwargs: Additional keyword arguments.
        """
        print_text(action.log, color=color or self.color)