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Uptime monitoring for your endpoints and cron jobs

Know immediately when your site goes down or a scheduled job stops reporting — free, with no extra account to manage.

HTTP checks

We request your URL on your chosen interval and track whether it answers. Anything below a response counts as down.

Heartbeat monitors

For cron jobs and workers: your script pings a unique URL. If the pings stop coming, the monitor flips to down.

Email alerts

Instant notification when a monitor goes down, and a recovery notice with the downtime when it comes back.

Uptime stats

Per-monitor uptime percentages for the last 24 hours, 7 days, 30 days and all time, plus a full status-change history.

Sign in to create monitors

Free with a Google or GitHub account.