Uptime monitoring for websites, APIs and services

Uptime monitoring is the practice of continuously asking one question on your users' behalf: is this service working right now? Instead of waiting for a customer to report a problem, checks run on a schedule from outside your own network and tell you the moment the answer changes. It answers three things a dashboard inside your own infrastructure cannot:

That is the whole point. If your monitoring runs on the same infrastructure as your service, an outage that takes down one takes down the other — and you find out from your customers instead. Our probes run on our own servers in Lithuania and the region, and on Cloudflare's edge.

Five are our own servers: Vilnius, Kaunas, Warsaw, Frankfurt and Amsterdam. The other eight are Cloudflare edge locations across Western and Eastern Europe, North and South America, Asia, Africa and Oceania. The free plan runs from three.

HTTP and HTTPS for any endpoint — REST, GraphQL, webhooks or third-party APIs, with every method and custom headers. Also TCP, DNS, ICMP, gRPC and UDP. Checks assert more than "it answered": status, headers, response body and duration.

Slack, Discord, Telegram, SMS, WhatsApp, PagerDuty, Opsgenie, Grafana OnCall, ntfy, Microsoft Teams, Google Chat, webhook and email. The message goes out after the second failed check — one dropped packet should not wake anyone — and another when it recovers.

Run our probe inside your network and monitor what never reaches the internet: internal APIs, databases, the print server. The probe connects out to us, so nothing has to be opened in your firewall.