Bot utterance
The bot finished saying something.
One event per spoken turn, including the entry message and anything relayed from the owner. data.text is what went to text-to-speech.
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.
Payload
Response
Received. Any 2xx counts as delivered.
Changes
Webhooks have no change history: a webhook is keyed by its event name rather than a path and method, so no recorded change can name it.