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Kerno automatically orchestrates your app and its dependencies locally and mocks external dependencies so your tests run against the same stack your code runs on.
"Kerno was up and running in minutes with no manual work, and it made our API migration so much smoother. We could instantly validate that every change made by Cursor worked the way we expected, and now it's a core part of how we build."
Kerno captures the baseline behavior of critical paths for your REST endpoints, then compares your code changes to the baseline and flags diffs.
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As your app evolves, Kerno retires stale tests and generates coverage for new behavior automatically. You'll never manually maintain a test suite again.
"Kerno saves us a lot of manual work and helps us catch side effects and issues that would definitely break our projects' backends. Our engineering team loves it."
"We were using Cursor heavily and had no real safety net. Kerno was running in minutes, and suddenly we could move fast without that low-level anxiety every time an agent touched something critical. It's now a non-negotiable part of our stack."
Fewer breaking changes reaching production
Faster feedback. No more waiting on CI
Saved per developer each week fixing issues post-merge
Reduced token consumption using Kerno index tools
