Regression Testingthat actually works!

Regression testing checks if new code changes have unintentionally broken existing features. Keploy makes this process easy by automatically recording API calls during normal usage and turning them into repeatable tests. When you make changes to your code, Keploy replays these tests to catch any unexpected behavior or regressions.

No, that's one of the best parts! Keploy captures real API traffic and generates regression tests for you. This saves you time and ensures your tests reflect actual usage patterns.

Keploy replays recorded API calls in a test environment and compares the new responses to the original ones. If there are any differences that shouldn't be there, Keploy flags them as potential regressions.

Keploy uses AI-powered noise detection to identify fields that change between runs — timestamps, UUIDs, session tokens — and automatically excludes them from strict assertions. Combined with time-freezing at the kernel level, this eliminates false failures without manual configuration.

Yes! Keploy is designed to capture session data, headers, and dependencies between requests. This means it can handle multi-step workflows and stateful interactions, not just simple one-off API calls.

Absolutely. Keploy can mock databases and third-party services, so your regression tests run in isolation and aren’t affected by changes or downtime in external systems.

Yes! Keploy works well with CI/CD tools, so you can automatically run regression tests on every code change, ensuring issues are caught early.

Definitely. Keploy is built to scale, making it a great fit for microservices and large projects. It can record and replay API calls across multiple services, helping you catch regressions anywhere in your architecture.

Yes. Keploy is fully open source under the Apache 2.0 license with 17,000+ GitHub stars. You can self-host it for free or use the managed cloud platform for enterprise features like Kubernetes recording and team dashboards.

Yes. The open-source version is completely free for local regression testing. The Playground cloud tier is also free with 30 test suites/month and 100 test runs/month. Paid plans start at $19/user/month for teams.

No. Keploy uses eBPF to capture traffic at the Linux kernel level, so it works without any code changes or SDK instrumentation. This makes it ideal for testing legacy applications and systems not designed for testability.