You can reliably use LiveKit webhooks to detect whether a room is active or not, making them suitable for marking a session as active or complete in telephony scenarios. • room_started: Triggered when a room begins—use this to mark the session as active. • room_finished: Triggered when a room ends—use this to mark the session as complete. Each event includes precise timing data so you can accurately track session status and transitions. For more granular details, you may also use participant_joined and participant_left events for participant-level tracking. All events are reliably sequenced and retried by the webhook system, ensuring accurate room/session state in your backend or billing logic. Sources: Webhooks | LiveKit Docs | pkg/telemetry/telemetryservice.go