Stream Session Snapshot
GET
/v1/agents/sessions/{session_id}/events/streamSandBase extension stream. Emits session.snapshot first ({session, items, turns, live_only: true}), then live Session events and periodic heartbeat. On upstream failure it emits stream.interrupted ({session_id, reconnect: true, resend_input: false}). cursor or Last-Event-ID returns 400. Send the API key in the Authorization or X-API-Key header.
Path parameters
Session ID (ses_ prefix).