Delightful Active Monitoring
for Developers
Checkly is the API & E2E monitoring platform for the modern stack: programmable, flexible and loving JavaScript.
Trusted by engineering teams at
synthetic monitoring
Monitor crucial flows fast
Monitor and validate your crucial site transactions. Take screenshots and get instant insights into what's working and what's not.
Coding browser click-flows used to be hard. Not anymore. Use modern open source frameworks like Playwright and Puppeteer to automate your flows. Run your checks in 20 locations worldwide.
api monitoring
Monitor all your APIs easily
Make sure your APIs always responds quickly and with the correct payload. Our intuitive editor lets you configure powerful HTTP requests.
Kickstart your checks with our Swagger and cURL importer. Add Node.js-based setup/teardown scripts and fine-grained assertions for in-depth API monitoring.
e2e testing
Monitoring 💘 E2E testing
Monitoring production is great. But catching bugs before they hit production is better.
Run your API monitors and synthetic monitoring scripts against your staging environment on each git push.
Vercel and 
HerokuAlerting
Alerting when and how you want it
Keep your team up to date with a generous helping of SMS messages and unlimited email, Pagerduty, Opsgenie, Slack and webhook notifications. Control exactly how, when and how often you get alerted. "Double checking" is enabled by default to never get false positives.
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Stats & metrics
Insights without limits
Doing a root cause without complete and accurate data is insane. But too much detail can also be distracting. That's why next to calculating aggregates to keep an overview, Checkly stores each and every raw result for you and your team to dive into.
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workflow
Integrates with your workflow
Checkly integrates with the open source & developer tools you use on a daily basis.
Javascript
Extend your monitoring with Javascript for custom authentication and test logic.
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Checkly is super easy to use and fits perfectly in our toolchain.
finn.auto uses Checkly to ensure booking processes work all the time, everywhere!
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"We've been using Checkly for the past months. It's been phenomenal. Super easy to get setup, works flawlessly and intuitively. The team are super receptive & quick to help"
"Checkly is a fabulous developer tool! The flexible features and developer-friendly API made the integration super easy. Bonus: their support is super friendly and knowledgeable!"
"Checkly is incredible: It combines Pingdom, Ghost Inspector and Assertible all in the same app, and the insights are much more detailed."
All features at a glance
API monitoring
Flexible API monitoring with custom body, headers, query parameters and unlimited assertions.
synthetic monitoring
Scripted browser clicks flow with Chrome using Playwright or Puppeteer Node.js frameworks. Take up to ten screenshots per check.
CI/CD integration
Trigger your checks on GitHub push & PR's or using a simple cURL command from your CI/CD pipeline.
Public dashboards
Display a public dashboard on your site or in-office mounted TV, hosted on your company domain.
Global coverage
Get global latency metrics by running your checks from up to twenty data center locations around the world.
Alerting channels
Generous SMS bundles & unlimited recipients / endpoints for Pagerduty, Opsgenie, email, webhooks and Slack alerting integrations.
Threshold alerting
Control what triggers alerts and set reminders. We always run double checks to combat false positives.
Teams & users
Add team members to your account to collaborate. Comes with full role based access control.
SSL expiry alerting
We'll alert you when your SSL certificate is about to expire up to 30 days in advance till D-day.