Directory
Checkly
Playwright synthetic monitoring
Free tier + paidMonitoring & error trackingchecklyhq.com
What it is
Synthetic monitoring defined as code: you write real Playwright scripts and API checks, keep them in the repo beside your app, and Checkly runs them on a schedule from global locations. Failures produce screenshots, traces and alerts. Configuration lives in a TypeScript file managed by the Checkly CLI.
Why it earns a slot
It catches the failures a plain uptime ping misses, like checkout still returning 200 while the button no longer works, and if you already write Playwright tests the monitors are nearly free to author.
Know before you commit
Browser checks are the ones you actually want and they burn quota far faster than API checks, with only 1K per month free. Free raw result retention is 7 days, and there is no self-hosted option.
Getting started
npm create checkly@latest
Neighbourhood
How Checkly sits against the rest of the atlas — swaps, companions and the tools builders actually save alongside it.
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