How do Kerno and Claude Code work together?
Kerno is the best tool to validate the backend code Claude Code generates. It runs integration tests and API regression tests against your real infrastructure locally in Docker, so Claude Code can catch breaking changes and fix them with context in every session.
How does Kerno augment Claude Code?
Codebase understanding
Explores files one by one via agentic search. Token-heavy, and indirect refs or cross-module dependencies can be missed.
Pre-built SCIP dependency graph with compiler-level accuracy. Full call chains, blast radius, and service dependencies in a single query.
Claude Code queries the dependency graph instead of exploring file by file. 88-99% fewer tokens, complete codebase understanding from the start.
Env setup & maintenance
Each dependency, config, or service change needs explicit direction from the engineer.
App, dependencies and APIs auto-provisioned and kept current as code changes.
No failures from testing against stale or drifted envs.
Blast radius analysis per code change
Inferred via grep; indirect refs and agent blind spots missed.
Complete blast radius via deterministic dependency graph on every change.
Precisely determine the ripple effect of code changes and ensure regressions don't slip.
QA feedback loop
Validation runs after PR, outside the agent's generation loop.
API regression tests and integration tests run locally in-session. Agent verifies and fixes its own output.
Feedback in seconds - Agent outputs code that won't break your system.
Test maintenance
Varies from engineer to engineer - they must know what to ask for; test updates lag behind code.
Watches for code and config changes 24/7 and proposes test updates automatically, before PR.
Test suite stays aligned with your codebase without manual effort.
Team QA workflows
QA varies depending on each engineer's knowledge and prompting skill.
Consistent QA and validation on every change, regardless of who wrote it.
Raise PR Velocity without raising product risk.
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
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Does Kerno replace Claude Code?
How does Kerno connect to Claude Code?
Can Claude Code already run tests?
How do I test AI-generated backend code?
What does KIT add to Claude Code?
Do I need to change how I use Claude Code?
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