Paste an HTTPS endpoint — a Slack or Microsoft Teams incoming webhook works as it is. We send one message when an incident opens, one if its cause changes, and one when it closes. Nothing else, ever.
Your endpoint has to accept a test message before we store it, so nobody can subscribe a server that never asked.
Checked from Cloudflare’s edge every minute. Last updated 2026-09-05T08:04:43.212Z.
arcnautical.com and the signed-in application shell.
The application server, PostgreSQL and Redis. The health endpoint fails if either dependency is unreachable.
The customer-facing /api/v1 surface, probed through its keyless port lookup.
A screen of a real hull, end to end. The verdict must be assessed and under three hours old.
No incidents reported today.
Days before Sep 5, 2026 are not listed — this page was not measuring then.