Is Cello down?

MCP serverBy cello.so. How to connect and its trust score are on the listing page.

No, Cello is up.

It passed its latest check 1 h ago in 163 ms, and every check since we started checking it on 11 Oct 2026.

Latest check

Last check: 1 h ago (18 Oct 2026, 19:54 UTC)
Response time: 163 ms (typical 177 ms)
Next check: In about 9 h
How often: About every 10 hours over the last 7 days

Uptime

Last 24 hours100%3 checks

Last 7 days100%17 checks

Last 30 days100%18 checks

All checks passedSome failedAll failedNot checked

Uptime is the share of checks that passed. We checked it about every 10 hours over the last 7 days.

Outages in the last 30 days

No outages in the last 30 days. An outage starts when two checks in a row fail and ends at the next passing check.

Recent checks

When	Result	HTTP	Time
18 Oct 2026, 19:54 UTC	Passed	401	163 ms
18 Oct 2026, 09:55 UTC	Passed	401	149 ms
17 Oct 2026, 23:13 UTC	Passed	401	174 ms
17 Oct 2026, 12:44 UTC	Passed	401	203 ms
17 Oct 2026, 02:51 UTC	Passed	401	251 ms
16 Oct 2026, 17:01 UTC	Passed	401	165 ms
16 Oct 2026, 06:13 UTC	Passed	401	199 ms
15 Oct 2026, 20:16 UTC	Passed	401	143 ms
15 Oct 2026, 10:29 UTC	Passed	401	215 ms
15 Oct 2026, 00:06 UTC	Passed	401	177 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 10 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.