Kerno | AI Backend Integration Testing Co-Pilot

KERNO UNDERSTANDS YOUR CODE, DEPENDENCIES AND BUSINESS LOGIC TO CREATE AND EXECUTE QUALITY TESTS, RELIABLY, AT SCALE.

FULL CONTEXT

Kerno creates a detailed graph mapping every piece of code, dependency and business logic to understand how everything fits together.

10+ Backend Languages Supported

DEEP COVERAGE

Our AI engine generates a high quality exhaustive test suite that covers every user flow and edge case.

AUTONOMOUS TESTING

When you make a code change, Kerno autonomously spins up real dependencies, runs, and updates tests, and detects behavioural and logical changes in your app.

Supports 30+ dependencies

INSTANT RESULTS

Kerno compiles all the changes across all edge cases into a human readable file that you can review in a few seconds inside your IDE, and create your PR if everything looks good.

Works in your favorite IDE

Review Uncommitted Changes

Get immediate feedback on your code including staged and unstaged commits without waiting for PR to be raised.

One-Click Testing

Run tests on-demand in a single click without manually spinning up test env, complex dependencies, or mocking data.

Fix with AI

Kerno hands off both the test results and and deep context it generates to your AI agent so you can quickly fix your code.

KERNO HELPS YOU BUILD TRUST IN AI CODE GEN AND ACCELERATES YOUR AI CODING WORKFLOW

Plans

Focus

Automated backend integration testing

General AI coding assistant that can write tests

Test Generation

Automated

Detects endpoints, database schemas, and dependencies, then generates runnable integration tests automatically

Manual

Can generate test files through LLM completions, but requires explicit back and forth prompting

Test Execution

Built-in

Runs tests automatically in isolated environments with containers, seeded data, and teardown logic

External

No built-in execution layer; relies on user-managed test frameworks

Environment setup

Automated

Automatically provisions Postgres, Redis, or other dependencies through Docker Compose

Manual

Developer must configure all dependencies manually

Test maintenance

Automated

Tracks API, schema, and config changes, then self heals or adds/removes affected tests

Manual

No automatic maintenance; generated tests must be manually updated

Change Intelligence

Built-in

Compares baseline and head commits to identify regressions

None

No regression comparison or state tracking

Reliability

Built-in

Deterministic guardrails ensure tests always run successfully out of the box

None

Quality depends on prompt phrasing and LLM randomness

WELCOME TO THE NEW ERA OF AI NATIVE BACKEND TESTING

Free Up Engineers

Never Manually Write, Run, or Maintain Tests

Kerno fully automates the testing workflow, from generation to execution to maintenance, so developers never waste time writing or fixing boilerplate tests.

Ensure Consistency

Keep Everything in Sync. Always. Effortlessly.

As your codebase evolves, Kerno continuously updates test files, eliminating the overhead of test upkeep and ensuring your suite never drifts out of sync.

Tighten Feedback Loops

Get Signals in Seconds Not Hours Inside your IDE

Kerno brings testing directly into the IDE, giving developers feedback in minutes while they're in flow. No more waiting on CI pipelines.

Built on Solid Foundations

PLUG AND PLAY AT ANY SCALE

Kerno is engineered to be lightweight, secure and fast to run.

Bring your own AI API key

Connect your own LLM providers, OpenAI, Anthropic, or Gemini, and keep full control over your data privacy and AI Infra.

Run lightning fast tests at scale

Kerno parallelized test runs across a cluster of isolated sandboxes to run 100s of tests and return results in under 100 seconds

PRICING

SIMPLE, FAIR, AND TRANSPARANT PRICING

Apply for Beta Access

Talk to a Founder

FREQUENTLY ASKED QUESTIONS

Got more questions? Drop us a message in our community Slack — we’re happy to help.

Automate your integration tests with AI

KERNO UNDERSTANDS YOUR CODE, DEPENDENCIES AND BUSINESS LOGIC TO CREATE AND EXECUTE QUALITY TESTS, RELIABLY, AT SCALE.

Kerno creates a detailed graph mapping every piece of code, dependency and business logic to understand how everything fits together.

Our AI engine generates a high quality exhaustive test suite that covers every user flow and edge case.

When you make a code change, Kerno autonomously spins up real dependencies, runs, and updates tests, and detects behavioural and logical changes in your app.

Kerno compiles all the changes across all edge cases into a human readable file that you can review in a few seconds inside your IDE, and create your PR if everything looks good.

Review Uncommitted Changes

One-Click Testing

Fix with AI

KERNO HELPS YOU BUILD TRUST IN AI CODE GEN AND ACCELERATES YOUR AI CODING WORKFLOW

WELCOME TO THE NEW ERA OF AI NATIVE BACKEND TESTING

Never Manually Write, Run, or Maintain Tests

Keep Everything in Sync. Always. Effortlessly.

Get Signals in Seconds Not Hours Inside your IDE

PLUG AND PLAY AT ANY SCALE

Bring your own AI API key

Run lightning fast tests at scale

SIMPLE, FAIR, AND TRANSPARANT PRICING

$25/Active Dev / Month

Custom

FREQUENTLY ASKED QUESTIONS