Monitor whole API flows — not just whether one endpoint returns 200.
UptimeEye checks your REST endpoints and chains them into multi-step flows with variable extraction and assertions, from 6 regions — so you catch broken APIs before your integrations do.
Free plan • Commercial use allowed • Multi-step flows on every plan
Everything you need to trust your API
From a single health check to a full authenticated flow — validated continuously from around the world.
REST Endpoint Checks
Send GET, POST, PUT or DELETE requests with custom headers and body, and verify the status code and response from up to 6 regions every 30 seconds.
Multi-Step API Flows
Chain requests into a flow — authenticate, create a resource, read it back — and pass values between steps with variable extraction. Included on every plan, even free.
Response Assertions
Assert on status code, response time, headers and JSON body fields, so a 200 that returns the wrong data still fails the check.
Authenticated Flows
Log in, capture a token, and reuse it in later steps to monitor endpoints behind authentication — not just public routes.
Latency by Region
Track response times to your API from each region and spot regressions before they turn into timeouts for your clients.
Alerts on Every Channel
Slack, Discord, Telegram, MS Teams, PagerDuty, generic webhooks or email — and again the moment your API recovers.
Why teams monitor APIs with UptimeEye
German company, EU data residency
UptimeEye is built and operated in Germany, your monitoring data stays in the EU, and the GDPR applies by default — with a DPA for business customers.
Multi-step flows on every plan
Full API flows with variable extraction are included even on the free plan — competitors charge €100–300/month add-ons for transaction or synthetic monitoring.
API-first, no-code flows
Build flows in the UI without writing scripts, and manage everything over a documented REST API when you'd rather automate it.
Frequently Asked Questions
What is API monitoring?
API monitoring continuously checks that your API endpoints are reachable and returning the correct responses. UptimeEye sends real requests from 6 regions, verifies status codes, response times and JSON fields, and can chain multiple requests into a flow — alerting you the moment your API misbehaves.
What is multi-step API monitoring?
A multi-step flow runs several API requests in sequence and passes values between them — for example: log in, extract the auth token, call an authenticated endpoint, and assert on the result. UptimeEye includes multi-step API flows with variable extraction on every plan, including the free tier (5 steps per flow, 10 on Pro).
Can I monitor authenticated APIs?
Yes. You can send custom headers, log in as a first step and extract a token or session, then reuse it in later steps — so you can monitor endpoints that require authentication, not just public ones.
How can I monitor my API for free?
The UptimeEye free plan includes 5 monitors and multi-step flows, with commercial use allowed and no credit card required — enough to keep an eye on your most important endpoints and one critical flow for free.
Where is my monitoring data stored?
UptimeEye is a German company and all monitoring and account data is stored in the European Union, GDPR applies by default, and we provide a DPA for business customers. See our trust page for details.