Nova - Self‑healing CI for PRs (DEMO)

Hi, I'm Sebastian.

I built an open source tool called Nova that automatically fixes failing Python tests by reasoning through them just like a human.

It takes the pain out of broken CI builds by diagnosing test failures and patching the code for you.

It's completely free to use.

Bring your own API key on any major model.

Gro Claude OpenAI Think of Nova like an AI teammate that keeps your CI build screed so you can focus on shipping.

Setup is one line pinned.

Install Nova CI Rescue.

I'm opening a pull request with some deliberate bugs.

Nova runs in CI in the background on that PR and we'll come back to it at the end to review the code changes.

Now what you see here is a local set that PI tests that completely pass.

next I run a small script that intentionally calculator add, subtract, multiply, divide.

We switch them all around so that we have some real failures to work with.

Now Nova fixes them behind the scenes.

Nova uses a four step process.

It's an agentic loop plan.

Generate patch critic maps family tests to likely code changes.

Generate writes the minimal patch, applies the change on a safe branch, never touching main critic runs the tests and gives feedback.

If anything still fails, it'll iterate.

It keeps looping until the sweet is green or a sensible limit and it's debugging in a loop.

Nova codes, tests and refines until the problem is solved.

And there we go.

In just about the time it took me to explain it, Nova has solved the bugs, all the bugs are fixed and everything passes.

And you can see here we reran that test suite.

It all passed.

Nova works on its own branch.

Let's jump back to that PR we opened at the start.

I'll open the commit.

and so here's the commit.

And this is exactly what you'd review in the merge.

On the left we have the bugs and on the right we have the fixes.

Nova's fixed all the failing tests locally and the PR shows the corresponding code changes.

Nova is free, open source and actively maintained.

You can add it to CI with a short workflow or run it locally with a single command.

If you send me a repo with failing tests, I'll run Nova and open a real fix PR with a minimal diff and a one paragraph summary.

No setup required.

On your side, would you consider using Nova?

Keep your build screen automatically.