> For the complete documentation index, see [llms.txt](https://docs.layerlens.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.layerlens.ai/more-in-this-section-9/webhooks.md).

# Webhooks

REST — Webhook event payloads.

Stratix POSTs JSON to your endpoint when a subscribed event fires.

## Headers

* `X-Stratix-Event` — event name
* `X-Stratix-Signature` — HMAC-SHA256 of body, hex-encoded
* `X-Stratix-Delivery-Id` — for dedup

## Sample event

```json
{
 "event": "evaluation.completed",
 "evaluation_id": "...",
 "score": 0.95,
 "occurred_at": "2026-05-08T12:00:00Z"
}
```

## See also

* [SDK: webhooks](/more-in-this-section-9/webhooks-1.md)