Monitor client-site APIs and form endpoints with assertions, history, and alerts
DownCTL checks API and form endpoints, then validates expected responses so successful status codes do not hide broken integrations or client-site behavior.
No credit card required during the trial period.
What API monitoring tracks
API monitors validate endpoint availability and expected responses so integrations are checked for behavior, not only basic HTTP reachability.
API endpoint availability
HTTP methods
Headers
Optional request bodies
Response assertions
API check history
Why it matters
APIs power products, automations, and integrations. Validating expected behavior helps teams catch regressions that simple uptime checks miss.
APIs can return 200 while still returning the wrong payload
Endpoint regressions affect applications and integrations
API checks belong near incidents and alerts
How it works in DownCTL
API monitoring connects form endpoints, integrations, and backend reliability to the same client website operations workflow as uptime and incidents.
- 1 Add an API monitor under a site
- 2 Configure method, path, headers, body, and assertions
- 3 Schedule checks
- 4 Alert on downtime or assertion failures
Keep exploring the website operations stack
DownCTL checks client websites continuously, records response history, and alerts your team when downtime or slow responses need attention.
Turn client-site health into a public source of truth with branded status pages, incident timelines, uptime summaries, and subscriber updates.
Create reusable channels and route each client-site alert rule to the people and tools that should know first.
DownCTL watches expected job check-ins for client-site cron jobs, recurring scripts, and background automations, then alerts when a process misses its window.
Common questions
What is API monitoring?
API monitoring checks whether endpoints are available and returning the expected response.
Can DownCTL check response content?
Yes. API monitors can include assertions so the response has to match more than a status code.
Can I monitor authenticated endpoints?
API monitors can be configured with headers and request details needed by many protected endpoints.
Can API failures open incidents?
Yes. API failures can participate in alerting and incident workflows.
Start monitoring with DownCTL
Start your free trial and bring client-site uptime, website health, alerts, and status pages into one place.
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