prebuilt.events

Event models

AgentEvent is emitted for agent loop lifecycle phases.

Key fields:

• agent_id, agent_type, agent_run_id
• iteration
• phase (e.g. loop_start, iteration_start, iteration_end, loop_end)
• max_iterations (for loop start)

Events are linked to a run_id and inherit common identifiers from BaseEvent.

Next steps

Agent loop pattern

How phases map to runtime loop behavior.

prebuilt.formatters reference

Built-in log formatting for agent events.