Get Observability Session Transcript

Full transcript timeline for one session.

Built from the agent runtime's transcript stream. A row is one chat call, tool call, or final output emission; rows share an iteration_id when they belong to the same input record's processing chain. Rows are returned oldest-first.

Results are scoped to the caller's tenant and service. A session id that belongs to another tenant or service returns an empty rows list, the same as a session that does not exist or has expired.