The bot has left the meeting; nothing follows this event.

Carries the final usage report, the briefing when one was requested and every escalation of the call with its answer. Unlike the others this one is awaited before the bot's process exits, so it is delivered even when the call ends abruptly.

Delivered as an HTTP POST to the bot's callback_url, with the event name in the x-speaking-bot-event header and, when the bot was created with a callback_secret, x-speaking-bot-signature: sha256=<hex>: the HMAC-SHA256 of the exact request body with that secret. Answer with any 2xx. Network errors and 5xx are retried three times (after 1, 3 and 9 seconds); a redirect counts as a failed delivery and is not followed.