Kerno

Test backend changes against real local services and critical user flows

Meet Kerno

Kerno tests backend behavior against a running local stack, helping developers and coding agents check changes before they are merged. It maps application entry points, dependencies, and important user flows, then creates and runs tests across those paths. Results identify the step that failed and compare expected behavior with the observed outcome.

Checks cover areas such as API contracts, authorization, malformed inputs, error handling, and interactions between services. Kerno can update tests as intended application behavior changes and return structured feedback to supported coding tools. It is aimed at engineering teams that need evidence about runtime behavior alongside code review and isolated tests.

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Product details

Website: kerno.io
Status: Launched
Category: Developer tools
Listed: Oct 21, 2026

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