Is Sonnet 5 Agent down?
Up
No, Sonnet 5 Agent is up.
It passed its latest check 4 h ago in 331 ms. It has passed every check since 25 Oct 2026, 12:19 UTC.
Latest check
- Last check
- 4 h ago (27 Oct 2026, 01:48 UTC)
- Response time
- 331 ms (typical 339 ms)
- Next check
- In about 8 h
- How often
- About every 11 hours over the last 7 days
Uptime
Uptime is the share of checks that passed. We checked it about every 11 hours over the last 7 days.
Outages in the last 30 days
2 outages, 3 days 21 h of failed checks in total, the longest 3 days 1 h.
| Started | Duration | Failed checks | First error |
|---|---|---|---|
| 21 Oct 2026, 22:53 UTC | 20 h 7 min | 2 | initialize returned HTTP 429 |
| 12 Oct 2026, 18:21 UTC | 3 days 1 h | 4 | initialize returned HTTP 429 |
Times are when our checks ran, about every 11 hours for this listing, so start times and durations are accurate to about that.
Recent checks
| When | Result | HTTP | Time |
|---|---|---|---|
| 27 Oct 2026, 01:48 UTC | Passed | 200 | 331 ms |
| 26 Oct 2026, 12:37 UTC | Passed | 200 | 346 ms |
| 26 Oct 2026, 00:23 UTC | Passed | 200 | 396 ms |
| 25 Oct 2026, 12:19 UTC | Passed | 200 | 328 ms |
| 25 Oct 2026, 00:39 UTC | initialize returned HTTP 429 | 429 | 351 ms |
| 24 Oct 2026, 13:30 UTC | Passed | 200 | 348 ms |
| 24 Oct 2026, 02:18 UTC | Passed | 200 | 331 ms |
| 23 Oct 2026, 15:57 UTC | initialize returned HTTP 429 | 429 | 400 ms |
| 23 Oct 2026, 04:57 UTC | Passed | 200 | 327 ms |
| 22 Oct 2026, 19:00 UTC | Passed | 200 | 341 ms |
How we check
Up means the MCP handshake and the tool list worked, or the server asked for sign-in or payment.
Checks come from our server, about every 11 hours for this listing over the last 7 days. A failure can also mean the service blocks our checks. Two failed checks in a row count as an outage, which ends at the next passing check.
If you think a check is wrong, contact hello@toolvet.app. More on how we check and score.