Returns the endpoint's recent delivery attempts, newest first. Each entry is one HTTP request, so a retried event appears once per try; use it to see what failed and why before requesting redelivery with [Replay missed events](/docs/api/reference/create-webhook-replay). Bound the window with the `before`/`after` timestamps and cap the page with `limit`. The response carries no cursor: to page further back, pass the oldest `attempted_at` you received as `before`. Maximum number of attempts to return. Defaults to 50, capped at 100. Only return attempts strictly before this timestamp. Only return attempts strictly after this timestamp. Delivery attempts, newest first. Identifier of this individual delivery attempt. Each retry is a separate attempt with its own id; use `event_id` to group the attempts for one event. Bird's source event ID, stable across retries of the same event. Null only for older attempts recorded before event IDs were available. Webhook event type. Open enum: new event types may be added over time, so treat any unrecognized value in a delivery as a future event rather than an error. Subscribing to a type that is not in the catalog returns a `422`. The values below are the types known at this version. Possible values (may grow over time): `domain.failed`, `domain.verified`, `email.accepted`, `email.bounced`, `email.canceled`, `email.clicked`, `email.complained`, `email.deferred`, `email.delivered`, `email.list_unsubscribed`, `email.opened`, `email.out_of_band_bounce`, `email.processed`, `email.received`, `email.rejected`, `email.scheduled`, `email.unsubscribed`, `email_mailbox.message_delivered`, `email_mailbox.message_failed`, `email_mailbox.message_received`, `email_mailbox.message_sent`, `email_mailbox.suspended`, `email_mailbox.thread_created`, `email_suppression.created`, `realtime.cache_channels`, `realtime.channel_existence`, `realtime.client_events`, `realtime.presence`, `realtime.connection_count`, `sms.accepted`, `sms.delivered`, `sms.expired`, `sms.failed`, `sms.rejected`, `sms.sent`, `sms.tfn_verification.approved`, `sms.tfn_verification.info_requested`, `sms.tfn_verification.rejected`, `sms.tfn_verification.submitted`, `sms.undelivered`, `voice.call.answered`, `voice.call.ended`, `voice.call.initiated`, `whatsapp.accepted`, `whatsapp.delivered`, `whatsapp.failed`, `whatsapp.read`, `whatsapp.sent` Outcome of this attempt. `delivered` means your endpoint accepted it with a `2xx` response; `pending` means the attempt is still in flight; `failed` means it returned a non-`2xx` response or no response at all. A `failed` attempt is not final for the event: automatic retries appear as further attempts with the same `event_id`. Possible values: `delivered`, `pending`, `failed` URL the request was sent to: the endpoint's `url` at the time of the attempt, which can differ from the current configuration after an update. HTTP status returned by the receiver. Null when no response was received (timeout, connection error, DNS failure). Response body your endpoint returned, which may be truncated. Omitted when no body was returned. Round-trip duration in milliseconds. When this attempt was made. Attempts are listed newest first by this timestamp, and the list's `before`/`after` parameters bound it.