# Degraded REST API Availability

- Provider: [GitHub](https://down.guide/github)
- Level: confirmed
- Impact: Partial outage
- lasted 1h 23m
- started 2026-07-16 22:51 UTC
- API Requests
- id: DWN-7fedec6c32
- Official page: https://stspg.io/pzvjh0wyg401

## Updates from GitHub
### 2026-07-16 22:51 UTC: investigating
We are investigating reports of impacted performance for some GitHub services.

### 2026-07-16 22:58 UTC: investigating
We are aware of degraded REST API availability and are investigating

### 2026-07-16 22:58 UTC: investigating
API Requests is experiencing degraded performance. We are continuing to investigate.

### 2026-07-16 23:29 UTC: investigating
We are continuing to investigate an issue causing approximately 35% of REST API requests to fail.  Based on our current understanding, requests are not consistently reaching the application layer, resulting in failed requests returning HTML responses instead of the expected API response format. We are actively investigating the issue and will provide another update as soon as more information is available.

### 2026-07-17 00:00 UTC: monitoring
The degradation affecting API Requests has been mitigated. We are monitoring to ensure stability.

### 2026-07-17 00:14 UTC: monitoring
As of 23:46 UTC, the REST API service is reachable and responding to requests normally.

### 2026-07-17 00:14 UTC: resolved
From 22:21 UTC - 23:50 UTC on July 16, 2026, the REST API experienced significant degradation. During this period, about 39% of REST API requests failed with HTTP 500 level responses, with the errors peaking at 44.3%. 
We identified the issue as an infrastructure change that wrongly marked the majority of API backends in a single region as unhealthy. As a result, requests routed to those backends failed before reaching the application layer. 
To prevent this from happening again, we're improving our systems to catch this kind of invalid configuration before it reaches production. We'll also audit the related systems to make them more resilient to future changes, and we're increasing our monitoring sensitivity so we're alerted to problems like this sooner.

---
down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by Sazabi (https://sazabi.com/?utm_source=down-guide&utm_medium=markdown).