A check that can’t prove it worked shouldn’t say it did

Website, TCP and heartbeat checks, run every minute from a machine that hosts none of the things it watches. Two failures before we call it down, one email when it goes, one when it comes back.

$10 a month for up to 50 checks.

Three things it can watch

An HTTPS URL

Your site, your API, your login page. We fetch it the way a stranger on the internet would, and record what came back.

A TCP port

Host and port. For the things that are not websites — a database, a mail server, a game server, an SSH daemon you would like to know had stopped answering.

A heartbeat

You ping a URL on a schedule. If the ping stops arriving, we alarm. This is how you watch a backup job or a cron task, because the thing that fails is the thing that never ran.

What makes it different

Checked from outside

Probes run from a machine that hosts none of the things it watches. A check run from inside the network it is checking reports green during exactly the outage you care about.

Two failures, not one

One missed check is a blip — a packet is lost, a handshake is slow. Two consecutive failures is a fault. This is the difference between an alert you read and an alert you mute.

A gap is a gap

If we could not measure, we record that we could not measure. It never becomes “up”, and it never resets your failure count — a flickering vantage must not hide a real outage.

Honest status

What is live today, stated plainly, because a service page that overstates itself is the first broken promise.

Live now

HTTPS, TCP and heartbeat checks, probed every minute from outside our network, with email alerts when a check goes down and again when it recovers. It has caught and cleared a real outage end to end.

Early access

This is days old and has had few users. If you want something watched while it is this new, email us and we will set your checks up with you rather than leave you alone with a form.

Not built yet

SMS alerting, which is waiting on carrier registration and is sold separately. A second probing vantage — today there is exactly one, so an outage at that one location is reported as a blind spot rather than guessed at. And a status page you can hand to your own customers.

We publish our own uptime

Including this service’s. It is measured by the same external watchdog that watches everything else we run, never by the monitoring product reporting on itself — if our prober died there would simply be no rows, and no rows reads as no outages.

See the record, including the outages we caused ourselves.

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