TaskPayload

Unique identifier for this task.

Name of the node being executed.

Input data passed to the task.

List of triggers that caused this task to be executed (e.g. channel writes).

Framework-resolved metadata associated with the task.

Generic dict carrier following the messages-stream pattern. Populated by map_debug_tasks from task.config["metadata"] when non-empty, so the same keys stream_mode="messages" consumers see (e.g. lc_agent_name, langgraph_node, langgraph_step) are available to stream transformers.

Consumers should ignore unrecognized keys.