Incident with Webhooks

Update timeline

1. investigating Mar 06, 2026, 04:58 PM UTC

   We are investigating reports of degraded performance for Webhooks

2. investigating Mar 06, 2026, 05:12 PM UTC

   We are investigating an issue affecting a subset of customers experiencing errors when viewing webhook delivery histories and retrying webhook deliveries. UI and webhook API is impacted. Engineers have identified the cause and are actively working on mitigation.

3. investigating Mar 06, 2026, 05:19 PM UTC

   This problem is impacting less than 1% of UI and webhook API calls.

4. investigating Mar 06, 2026, 05:43 PM UTC

   Our engineers have identified the root cause and are actively implementing mitigations to restore full service.

5. investigating Mar 06, 2026, 06:07 PM UTC

   We continue working on mitigations to restore full service.

6. investigating Mar 06, 2026, 06:39 PM UTC

   We continue working on mitigations to restore service.

7. investigating Mar 06, 2026, 07:07 PM UTC

   We continue working on mitigations to restore service.

8. investigating Mar 06, 2026, 07:39 PM UTC

   We continue working on mitigations to restore service.

9. investigating Mar 06, 2026, 08:18 PM UTC

   We have deployed a fix for the issue causing some users to experience intermittent failures when accessing the Webhooks API and configuration pages. We are monitoring to confirm full recovery.

10. investigating Mar 06, 2026, 09:34 PM UTC

    The previous mitigation did not resolve the issue. We are investigating further. The affected endpoint is the webhook deliveries API (https://docs.github.com/en/rest/repos/webhooks?apiVersion=2022-11-28#list-deliveries-for-a-repository-webhook) and its organization and integration variants. Overall impact remains low, with under 1% of requests failing for a subset of customers.

11. investigating Mar 06, 2026, 10:35 PM UTC

    We are preparing a new mitigation for the issue affecting the webhook deliveries API (https://docs.github.com/en/rest/repos/webhooks?apiVersion=2022-11-28#list-deliveries-for-a-repository-webhook) and its organization and integration variants. Overall impact remains low, with under 1% of requests failing for a subset of customers.

12. investigating Mar 06, 2026, 11:26 PM UTC

    We have deployed a fix and are observing a full recovery. The affected endpoint was the webhook deliveries API (https://docs.github.com/en/rest/repos/webhooks?apiVersion=2022-11-28#list-deliveries-for-a-repository-webhook) and its organization and integration variants. We will continue monitoring to confirm stability.

13. investigating Mar 06, 2026, 11:28 PM UTC

    Webhooks is operating normally.

14. resolved Mar 06, 2026, 11:28 PM UTC

    On March 6, 2026, between 16:16 UTC and 23:28 UTC the Webhooks service was degraded and some users experienced intermittent errors when accessing webhook delivery histories, retrying webhook deliveries, and listing webhooks via the UI and API. On average, the error rate was 0.57% and peaked at approximately 2.73% of requests to the service. This was due to unhealthy infrastructure affecting a portion of webhook API traffic. We mitigated the incident by redeploying affected services, after which service health returned to normal. We are working to improve detection of unhealthy infrastructure and strengthen service safeguards to reduce time to detection and mitigation of issues like this one in the future.