Build Faster. Test more.
Fail Less.

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Testing Pays Sim

Increase Test Coverage

Using our tools you can get all the responses that an API can return. No more being surprised by undocumented errors.

Easy CI Integration

Our system easily ties in with your continous integration system, just ask us, it's what we do ourselves.

Faster Integration

Forget waiting for test accounts and scanning through endless documents. Get started in 5 minutes with clear and simple instructions.


The old way of payment testing

inconsistent payment flows

Much easier with Testing Pays

Testing Pays flow

Built for developers

We offer powerful simulators of payment APIs for you and your team to use in your projects. Say goodbye to unreliable sandboxes and hard-to-remember test cards. Try it out here.

Where is your weakest link?

Load test with ease

Stress test your own code, with real traffic. No more shortcuts for your payment systems.

Minimal Setup

Use the same API key, the same Testing Pays account. Just let us know when you are starting.

No Throttling

Want to unleash 1.000.000 transaction requests? No problem, get in touch and we'll set up your account for the traffic!

Schedule a load test

Real Time Feedback

With our in browser live tail you can view your test transactions in real time.

Letting you iterate quickly and take the pain out of debugging.

More about Live Tail

View Our Example Apps