We test APIs.
Coalmine helps you catch issues before your users do. Define API-based test flows, run them on your schedule—even every minute—and get the kind of app health insights your dashboards wish they had.
Reliability shouldn’t be a grind.
From tricky edge cases to everyday API testing, we give you the tools and structure to build systems that stay solid—even when things get weird.
Set up API tests in minutes
Our intuitive UI makes it easy to build flows, validate domains, and manage everything at the org level.
Test the tricky stuff
We handle the edge cases like email flows and push server behavior that other tools shy away from.
Authenticate like a pro
Use our built-in JWT issuer and secure secrets management to connect to even the most locked-down APIs.
Run tests your way
Schedule flows as frequently as every minute, with full control over request logic and timing.
See problems before your users do
Get proactive alerts and metrics that tell you what broke, when, and why.
Get expert advice
We offer hands-on consulting to help you build more reliable systems, from TTL tuning to API design best practices.
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