Use case · API & backend monitoring
Every endpoint returns 200. The sequence is broken
Cover the backend the way a client uses it: chained requests that depend on each other, real authentication with tokens that expire, third-party dependencies, and a latency budget per endpoint rather than one global timeout.
Trusted by teams running APIs other people build on
“Checkly Traces helped us resolve issues faster by showing exactly how long database calls are taking. This insight was crucial in pinpointing N+1 issues and optimizing caching.”
Three gaps a health check will never close
Backends usually fail at the seams: between two services, between a client and its token, between what an endpoint returns and what a consumer expects.
A health endpoint proves the process is alive
It confirms the service started and can answer. It says nothing about whether the endpoint that writes to the database, calls the queue, or talks to the payment provider still does its job.
Auth breaks quietly and completely
A rotated key, an expired client secret, a token refresh that stopped refreshing. Everything looks healthy from inside because internal calls never went through the public auth path.
The failure lives in the sequence
Create, poll until ready, fetch the result, clean up. Every request in that chain returns 200 in isolation, and the flow is still broken because step three never sees what step one wrote.
For the capability itself — assertions, thresholds, scheduling, and everything a single check can do — see API monitoring. This page is about covering the whole estate with it.
“The ease of integration in our pipeline was remarkable. We have everything defined in a CI/CD pipeline using GitHub Actions using the CLI. Everything scaffolds out based on a configuration, so we just update a configuration file which specifies the environments, what services are there, what the URLs are, and from that, we just generate all the groups and their checks.”
Tobias Deekens
Principal Frontend Engineer · commercetools
It plugs into the stack you already run
Checkly is the synthetic layer, not another silo. Results flow out to your metrics, traces, and incident tooling through native integrations and raw webhooks.
API monitoring
The capability behind this page: assertions, thresholds, and scheduling for any endpoint.
Learn moreMulti-step checks
Chain requests that depend on each other and assert on the whole sequence.
Learn morePrivate locations
Reach internal services that never touch the public internet.
Learn moreTraces
Follow a failing request into the backend span and the database call behind it.
Learn moreAlerting
Degraded and failed route separately, after retries decide whether the latency spike was real.
Learn moreStatus pages
Publish per-service availability to the developers building on your API, on your own domain.
Learn moreRocky AI
Reads the failed run and its trace, then names the service or dependency that broke the chain.
Learn moreHeartbeat monitors
Catch the jobs and cron tasks that fail by not running at all.
Learn moreTerraform
Generate the whole estate from a service config instead of clicking it in.
Learn morePagerDuty
Incidents open and auto-resolve with your escalation policy.
Learn morePrometheus
Check results land next to the rest of your service metrics.
Learn moreDashboards
Per-endpoint latency history, including p95 and p99, in one shareable view.
Learn moreBackend teams, on Checkly
“We love Heartbeat Checks! They help us ensure that critical operations run to completion and on time. We had previously evaluated other platforms just for their heartbeat checks, so we are happy to see these within Checkly along with the API and browser checks.”
Johannes Gilger
CEO & Founder · urlscan.io
“Checkly was incredibly easy to integrate. Even our initial traces setup was quick, and the documentation was better than OTel’s own.”
Brian Stack
Infrastructure Engineer · Render
“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!”
Connor Hicks
Lead Developer · 1Password
“Checkly has helped us save engineering resources and expenses. The number of our customer support tickets are then reduced because the customer is already proactively informed about problems without having to report the issues themselves.”
Aliasger Kiranawala
Lead SDET · Locus
“A real advantage that Checkly gives us is that we’re not waiting for our users to report an issue with a product, or waiting on a staff member to file a ticket. Checkly gives us real-time feedback on what is and isn’t working.”
Thomas Reither
Associate Consultant · Solutia
“Checkly CLI has enhanced our engineering team’s ability to quickly build, validate and deploy an entire suite of checks from their local development environment.”
Tavares Chambless
Manager, Quality Assurance · Loyal Health
Cover the backend, not the health endpoint
Write one chain, generate the rest from your service config, and give every endpoint a latency budget it can actually be held to.