Monitor every complex workflow like your business depends on it

Uptime monitoring checks whether a URL or TCP port responds — it answers "is it up?". Synthetic monitoring goes further: it simulates real user actions (clicking buttons, filling forms, calling APIs with real payloads) to answer "does it actually work?". Your checkout page can return a 200 while the Pay button throws a JavaScript error. Uptime says green. Synthetic catches it.

Checkly has four check types in two categories. Browser-level: Browser Checks run Playwright scripts against your UI; Playwright Check Suites port your entire test project to production as a continuous monitor. API-level: API Checks assert on endpoint responses (status, payload, response time); Multistep Checks chain API calls to test complete backend workflows like auth → create → verify flows.

If your team uses Playwright, you can import your existing test suite directly as a Playwright Check Suite — custom dependencies, shared fixtures, StorageState, and all. API Checks and Multistep Checks use the same Playwright request API your team already knows. For teams starting fresh, the Checkly CLI scaffolds checks in minutes.

API Checks can run as frequently as every 10 seconds. Browser Checks and Multistep Checks support intervals down to every 1 minute. All check types can also be triggered on demand — via CLI, API, or CI/CD — for instant validation during deployments.

Checkly immediately captures a full screenshot, video replay, Playwright trace, console logs, and network requests. Rocky AI analyzes the failure and returns a plain-language root cause summary. Alerts fire instantly to Slack, PagerDuty, email, or any webhook — with all that context attached. Status page incidents can open automatically.

Yes. Private Locations let you deploy a lightweight Checkly agent inside your own infrastructure — VPCs, staging environments, or on-premises networks. It runs the same checks as public cloud locations, with all traffic staying inside your network.