API latency performance graph

Real-Time API tests
& Performance Analysis

Do you know how the APIs you depend on are working?

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Be alerted to problems and issues before they affect your apps and customers

API test and performance tool community


Get real-time API performance metrics for the services that you use, provide or need. Understand reliability, uptime, latency and the quality. Use our database of over 5,000,000 API calls to check which APIs you should be using in your products. Join our community and add new tests. Use predefined API calls to get started quickly. Tell me more >>
Developer API testing


Test the APIs you use. Understand how fast and reliable they are and debug them quickly. Schedule tests and create alerts based on customizable failure types for the services your apps depend on. Use our database to pick the best performing service for your needs. Tell me more >>
Enterprise API test and Performance tool


Schedule tests globally, or from inside your own infrastructure on the APIs you depend on or deliver. Get alerted to slow downs or problems before your customers tell you. Provide third party tables and charts of performance to give additional assurances to your users. Create custom events, script multiple API calls together and provide dashboards for internal and external use. Tell me more >>

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Get 30 days of Pro service free and schedule up to 100 private tests per hour. No credit card required. After 30 days you can continue or use our free version and join our community.

Pricing Info

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Client and Partner Snapshot



We use the APImetrics platform to measure performance for our developer APIs from customer/developer perspective….. Ed Schmidt – Director Developer API Program AT&T



Radius is proud to partner with APImetrics to deliver our API Performance Monitoring Solution … performance is an essential element for capitalizing on the growth of the Internet of Things¬†. Anders Brown – Managing Director

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