API Testing Online


Poor API Performance and API call errors can be easy to miss but have a huge impact on your business.

API Testing online helps spot them quickly from the clouds and datacenters your users use.

Try APImetrics for FREE for 2 weeks, no strings attached.

API Test Online Reports

If you don’t have time to configure your own tests, why not try out our database of 1000s of historical API calls from some of the leading services at API.expert

Real-World API Testing Online

Setup real API tests online and run calls through your browser or from 80+ locations worldwide.

Understand where problems are, spot the issues 70% of tools miss and improve your API quality.

  • Create real API tests online
  • Run calls from dozens of locations on all the major clouds
  • Build sequences of API calls and test the underlying logic from a simple interface
rest api test online

Reporting & Analysis

See what you need to know to explore failures, latency problems and more all from our integrated reporting and AI driven dashboards

  • Quality reports generated using our CASC scoring system
  • Integrated geographic latency analysis
  • See heatmaps of performance trends over time
  • Identify weak calls and performance outliers
cloud cloud api performance

Run calls locally & remote

Test things locally in your browser before adding in the security settings.

api testing online locally

Your users don’t access the same cloud. Why monitor from just one?

It’s a world of containers and serverless architectures. You have little visibility on where your customers and partners are. You can’t risk only monitoring from a single cloud service.

With APImetrics, you don’t have to compromise. 75+ locations on public cloud locations around the world. A dynamic scheduling engine that allows you to set call frequencies and even downtime. Don’t be limited to AWS simply because that’s what someone picked as their platform.

Map of the world APImetrics KPIs for APIs global monitoring coverage API KPIs

Alerting the way you want it when you need it

Everything included for alerts from simple emails on failure to complex webhook integrations to the tools you use. 

Go beyond failure alerts with performance change reporting so you know when things are going wrong BEFORE they impact end users.

Slack & APImetrics
APimetrics Webhooks
Microsoft Teams & APImetrics
PagerDuty & APImetrics
DataDog & APImetrics
APImetrics OpsGenie


Want to learn more? Check our our technical knowledge base. Browse our sector-by-sector data. Take a look at our guide to the API economy.

When you sign up now, even without a credit card, you’ll be running your first API call in minute

Take a detailed look

Download a detailed introduction to APImetrics and learn how we are bringing common standards to API monitoring with integrated monitoring, performance assurance and compliance analysis!