Reliable uptime & API monitoring service
Automate your API monitoring and stop guessing. We notify you the moment an endpoint returns an error or stops responding, so your team can fix issues before customers feel them.
Trusted By
Teams of all sizes depend on Odown to keep mission critical APIs fast, predictable, and available.
Do not gamble with your API uptime
Your product runs on APIs. A brief outage, a creeping latency spike, or a silent contract failure can break checkouts and dashboards, and frustrate users. We check your endpoints around the clock, alert you as soon as a check fails, and help you fix issues before customers notice.
With Odown, your API is checked on a schedule you control, so you can respond quickly and protect revenue when incidents happen.
Long API monitoring log
View a clear, long-term history of every check, incident, and recovery. Compare real-time status with historical trends, identify patterns by endpoint or region, and demonstrate reliability improvements to stakeholders.
Customize your API uptime checking rates
Choose the right cadence for each endpoint, from frequent checks on critical paths to lighter schedules for lower-risk services. Increase frequency during releases, reduce noise during calm periods, and know you will hear from us right away when something breaks.
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Custom HTTP request
Build each request to match your API. Choose method, URL, query, headers, and body. Add authentication with API keys or tokens, include cookies if needed, and test the exact call your clients make in production.
Everything you need, visualized
Track uptime and response time with clear charts. Break down performance into DNS, TCP, TLS, and time to first byte, then pinpoint where slowdowns begin and where to fix them.
Alerting for any situation
Route alerts to the tools your team already uses. Send to Slack, PagerDuty, Opsgenie, Discord, Telegram, email, or SMS, and use webhooks when you want to trigger your own automations. Create a channel for each team and turn it off for monitors they don't own, and let PagerDuty or Opsgenie handle on-call escalation.
Worldwide Monitoring
Spot regional outages early by running checks from 17 global locations and maintaining a consistent experience for every user.
API monitoring FAQ
What is API monitoring?
API monitoring sends real requests to your API endpoints on a schedule and checks that each one responds with the expected status code, quickly enough and, where possible, with the expected content. It alerts you when an endpoint fails, so you hear about problems before your users or integrations do.
What can an Odown API check send?
Any HTTP method (GET, POST, PUT, PATCH, DELETE, HEAD or OPTIONS), your own headers such as an Authorization token, and a request body as JSON, form parameters or raw text.
How does Odown decide an endpoint is down?
A check fails when the endpoint doesn't respond in time or returns a status code you didn't expect. You can require an exact status code, any 2xx, or anything below 500. You can also require an exact response body of up to 200 characters, which suits health endpoints with a fixed answer. An outage is confirmed after a number of failed checks in a row that you choose (3 by default).
How often and from where are APIs checked?
As often as every minute, from up to 17 regions across North America, South America, Europe, Asia and Australia. Each check records the response time, broken down into DNS lookup, connection, TLS and time to first byte.
Can Odown run multi-step API tests?
No. Each monitor checks a single request. To cover a login flow, monitor each step separately, for example with a long-lived test token in the headers, and use a scripted testing tool for chained requests.
How much does API monitoring cost?
API and website monitors share the same plans: $12 a month for 10 monitors, $29 for 40 and $249 for 300, all with one-minute checks and a free 14-day trial.
Want to go deeper? Read our guides to API monitoring, API response time standards and monitoring a GraphQL API.
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