Is Letter AI down?

MCP serverBy letter.ai. How to connect and its trust score are on the listing page.

No, Letter AI is up.

It passed its latest check 3 h ago in 509 ms, and every check since we started checking it on 11 Oct 2026.

Latest check

Last check: 3 h ago (18 Oct 2026, 01:07 UTC)
Response time: 509 ms (typical 487 ms)
Next check: In about 7 h
How often: About every 10 hours over the last 7 days

Uptime

Last 24 hours100%2 checks

Last 7 days100%16 checks

Last 30 days100%16 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, 01:07 UTC	Passed	401	509 ms
17 Oct 2026, 13:51 UTC	Passed	401	492 ms
17 Oct 2026, 02:45 UTC	Passed	401	489 ms
16 Oct 2026, 16:01 UTC	Passed	401	487 ms
16 Oct 2026, 06:21 UTC	Passed	401	506 ms
15 Oct 2026, 20:18 UTC	Passed	401	456 ms
15 Oct 2026, 11:16 UTC	Passed	401	511 ms
15 Oct 2026, 00:55 UTC	Passed	401	474 ms
14 Oct 2026, 15:03 UTC	Passed	401	642 ms
14 Oct 2026, 05:11 UTC	Passed	401	441 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.