> ## Documentation Index
> Fetch the complete documentation index at: https://docs.limitguard.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Downtime log, September 2026

> Planned maintenance on 2026-09-19 and every short downtime shown on the status page since the 2026-09-05 restore

This page records every downtime of `api.limitguard.ai` shown on [status.limitguard.ai](https://status.limitguard.ai) since the service was restored on 2026-09-05. The longer outage before that has its own [post-mortem](/postmortems/2026-09-langfuse-event-loop).

## Planned maintenance, 2026-09-19

All times UTC.

| When                | What                                                                                                                                        |
| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| 2026-09-19 00:34    | Tracing backend upgraded. The API does not depend on it to serve requests and stayed up.                                                    |
| 2026-09-19 00:40:55 | Container engine upgrade on the API host starts. Every container on the host stops, including the API and the reverse proxy in front of it. |
| 2026-09-19 00:41:45 | All containers back and healthy. `api.limitguard.ai/health` returns 200.                                                                    |

About 50 seconds of downtime. Requests in that window could not connect. Every service restarted from its existing data. The upgrade was run in the lowest-traffic hour.

## Unplanned downtime, 2026-09-08 to 2026-09-18

Daily totals as measured by the status-page monitors. The monitors report per-day totals, not individual start times.

| Date       | API        | x402 discovery |
| ---------- | ---------- | -------------- |
| 2026-09-08 | 3 min      | none           |
| 2026-09-09 | 9 min      | none           |
| 2026-09-10 | 2 min      | 5 min          |
| 2026-09-13 | 7 min      | none           |
| 2026-09-14 | 9 min      | 5 min          |
| 2026-09-15 | 33 min     | 25 min         |
| 2026-09-16 | 19 min     | 10 min         |
| 2026-09-18 | 7 min      | 4 min          |
| **Total**  | **89 min** | **49 min**     |

The causes of these windows are still being investigated, and none of them has been ruled a false positive yet. This page will be updated with a cause per row. Any that turns out to be a real outage over a few minutes will also get its own entry on the status page, whose incident history currently shows none of them.