{
"id": "evt_01J9X7Z0K7Q8W3F2P1N6M5V4R3",
"object": "event",
"type": "task.completed",
"created_at": "2026-10-23T06:23:05.004Z",
"data": {
"id": "task_01J9X7Z0K7Q8W3F2P1N6M5V4R3",
"object": "task",
"model": "wan/v3.0-spark/image-to-video",
"task": "image-to-video",
"status": "completed",
"input": {
"image_url": "https://assets.example.com/inputs/portrait.jpg",
"prompt": "slow push-in, soft morning light",
"duration": 5,
"resolution": "720p"
},
"output": {
"video": {
"url": "https://openassets.fiveapi.ai/x2v/results/551fe9fa/openapi_1793171336.mp4",
"content_type": "video/mp4",
"file_size": 4823119,
"width": 720,
"height": 1280,
"duration": 5.04,
"fps": 24
}
},
"error": null,
"credits": {
"estimated": 60,
"charged": 60
},
"metadata": {
"order_id": "ord_8812"
},
"created_at": "2026-10-23T06:21:02.127Z",
"started_at": "2026-10-23T06:21:40.512Z",
"completed_at": "2026-10-23T06:23:05.004Z",
"expires_at": "2026-10-30T06:23:05.004Z"
}
}Task events
The webhook Five API sends to your endpoint when a task completes, fails or is cancelled.
{
"id": "evt_01J9X7Z0K7Q8W3F2P1N6M5V4R3",
"object": "event",
"type": "task.completed",
"created_at": "2026-10-23T06:23:05.004Z",
"data": {
"id": "task_01J9X7Z0K7Q8W3F2P1N6M5V4R3",
"object": "task",
"model": "wan/v3.0-spark/image-to-video",
"task": "image-to-video",
"status": "completed",
"input": {
"image_url": "https://assets.example.com/inputs/portrait.jpg",
"prompt": "slow push-in, soft morning light",
"duration": 5,
"resolution": "720p"
},
"output": {
"video": {
"url": "https://openassets.fiveapi.ai/x2v/results/551fe9fa/openapi_1793171336.mp4",
"content_type": "video/mp4",
"file_size": 4823119,
"width": 720,
"height": 1280,
"duration": 5.04,
"fps": 24
}
},
"error": null,
"credits": {
"estimated": 60,
"charged": 60
},
"metadata": {
"order_id": "ord_8812"
},
"created_at": "2026-10-23T06:21:02.127Z",
"started_at": "2026-10-23T06:21:40.512Z",
"completed_at": "2026-10-23T06:23:05.004Z",
"expires_at": "2026-10-30T06:23:05.004Z"
}
}Authorizations
Your API key from the developer console, sent as Authorization: Bearer sk_live_....
The x-api-key: sk_live_... header is accepted as an alternative.
Headers
The event id. It equals id in the body and stays the same across retries, so use it to de-duplicate.
"evt_01J9X7Z0K7Q8W3F2P1N6M5V4R3"
Unix time in seconds when the event was signed.
1792736585
v1,<base64 signature>. During a secret rotation the header carries several space-separated values.
"v1,RlzoRMsvgGLfVsE6NqX4N5CHAfiWBABarbN8HusOBnE="
Body
Event id. Equals the webhook-id header and stays the same across retries.
"evt_01J9X7Z0K7Q8W3F2P1N6M5V4R3"
"event"task.completed, task.failed, task.cancelled A generation task. error is always present (null unless the task failed); other empty members are omitted.
Show child attributes
Show child attributes
Response
Any 2xx within 10 seconds marks the event as delivered; it is not sent again.