Delightful Active Monitoring for the Modern Stack
Checkly is the API & E2E monitoring platform for modern developers: programmable, flexible and loving JavaScript.
Trusted by engineering teams at
synthetic monitoring
No more broken web apps
Monitor and validate your most crucial site transactions like logins, shopping carts and
onboarding
flows. Take screenshots to get instant insights into what's working and what's not.
Scripting browser click flows used to suck. Not anymore. Checkly uses Puppeteer & Playwright frameworks to run
your
flows in a Chrome browser.
api monitoring
No more broken APIs
Make sure your API always responds quickly and with the correct payload. Get started
with our Swagger or cURL importer and super easy API monitor creator.
Monitor your API performance from 20 different locations, as often as once every minute. We'll also check if
your SSL certificate is about to expire.
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.
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Setup
Create your API checks and script your browser click flows using the UI or API.
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Integrate
Install our GitHub App in your repo. We'll start listening to each deploy event.
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E2E test on each push
On each push, get detailed E2E test results, logs and screenshots right in your PR.
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.
workflow
Integrates with your workflow
Checkly integrates with the open source & developer tools you use on a daily basis.
ðŸŽ
Puppeteer & Playwright
Harness the full power of the Puppeteer & Playwright frameworks to test and monitor your web apps.
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Javascript
Extend your monitoring with Javascript for custom authentication and test logic.
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"The flexible features and developer-friendly API made the integration super easy. Checkly is a fabulous developer tool! Bonus: their support is super friendly and knowledgeable!"
"Checkly helps our teams to ship code more confidently and guide data-driven decision making. Integrations with tools like Prometheus and PagerDuty make the adoption seamless."
"Checkly is super easy to setup and the best option for us to test our Websocket API. We depend on it 24/7 and it’s our go-to place when PagerDuty wakes us up at 3am"
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 Puppeteer or Playwright 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.