Instantly validate every AI  backend code change. Ship fast without breaking things.

Try Kerno for free
1-click ● 5min install | No credit card required

Understands your codebase no matter the size
Kerno builds a graph of your codebase, APIs, and dependencies.

Supports your backend language

Explore

Specilized subagents run in parallel to explore every corner of your codebase.

Map

A detailed graph is generated to give Kerno a deep understanding of your application.

Personalize

Kerno automatically incorporates your claude.md, and agents.md configs.

Starts and maintains your test environment automatically. Kerno reads your existing configs and boots a complete isolated Docker environment.

Supports your dependencies

Orchestrate

Kerno reads your configs, env variables, and migration files to spin up your entire stack.

Run

Tests run in parallel with clean state, seeded data, and mocked external services.

Update

When schemas change or dependencies are added, Kerno updates your environment.

Catches breaking changes & side effects before CI
Kerno compares every code change against your base branch's behavior to show you exactly what changed.

Everywhere your work

Create baseline

Kerno analyzes endpoints and captures their behavior across critical states and paths.

Diff behaviour

Code change are diffed against the baseline and changes are instantly flagged.

Validate changes

Approve intentional changes or reject accidental breaks before they ever reach CI.

Maintains your tests in sync with your codebase
Keep your test suite complete and consistent without manual maintenance.

Run in your CI [Coming Soon]

Self-Heal

When tests break, Kerno fixes them automatically.

Sync

As your code evolves, Kerno updates, adds, and removes tests to match current behavior.

Run in CI

Work against the same baseline, keeping tests consistent across the entire team.

Trusted by AI-native engeneering teams to ship better software

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 our how we build.
Misch Strotz
Co-Founder & CEO, LetzAI
Using Kerno with Claude Code has been a game changer. You get quick feedback with no manual effort, and it saves you a lot time and hassle debugging integration issues post-merge.
Jonathan Bernales
CTO, Germen
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.
Santiago J. Valls
Co-Founder & CTO, Bewise
Try Kerno for free
Install in 5 mins | No credit card required