GitAlert is an automatic check that tells you which pull requests are safe to merge — and which ones deserve a careful look first.
Whenever anyone — a teammate, a contractor, or an AI coding agent — opens or updates a pull request, GitAlert reads the change and posts one plain-English label right on the PR:
That's it. No dashboards to babysit, no 40-comment review threads, no configuration. One glance tells your team where to spend their attention.
{primary} GitAlert is triage, not proof. It posts a neutral, informational signal — it never fails your build, never forces a red ✗ that blocks a merge, and never spams your PRs with comments. You and your reviewers always stay in control of what ships.
Two years ago, humans wrote code and occasionally autocompleted. Today, a large share of newly merged code is written by AI, and autonomous agents open pull requests around the clock. That changed everything about review:
The result: more pressure to merge fast, and far more ways for something bad to slip through. One bad merge to your main branch can cost you a weekend, a customer, or a security incident.
{danger} The expensive failure isn't the obvious bug — it's the PR that looked fine, passed CI, and got rubber-stamped because nobody had time to read it closely. That's exactly the PR GitAlert flags.
GitAlert is cheap insurance against that. It reads every pull request in seconds and tells your humans which two of the twenty actually need their eyes. The math is simple:
{success} If GitAlert saves a single reviewer one hour a month, it has already paid for itself many times over — and it only takes one caught bad merge to save you a very bad day.
file:line reasons behind it, so a reviewer can jump straight to what matters.{tip} Install once and forget it. GitAlert starts working on its own and keeps working on every future PR — no babysitting required.
On paid plans, GitAlert can go further than reading the diff: it can build your project and run its existing tests in an isolated, throwaway sandbox, then report whether the change actually holds up — not just whether the tests are green.
These are the mistakes AI-written (and rushed human) code makes most often:
| Check | What it catches | Why it matters |
|---|---|---|
| Gamed tests | Tests that were weakened, skipped, xfail-ed, or deleted just to make the suite pass |
A "green" build that proves nothing |
| Made-up dependencies | Packages imported in the diff that don't exist on the registry | Hallucinated imports + supply-chain ("slopsquatting") risk |
| Sensitive-file changes | Edits to CI config, secrets, auth, or other high-risk files | A small diff that quietly changes who can do what |
| Reward-hacking & gaming (paid) | Code that "passes the test" by cheating the check rather than solving the problem | The signature failure mode of AI agents |
| Build & test verification (paid) | Whether the project actually builds and its tests genuinely pass on the change | Real evidence, not just a green checkmark |
Every flag points to the exact file and line, so reviewers never have to hunt for the reason.
{note} The label is deterministic: the same diff always produces the same result. There's no random LLM verdict deciding your merge — the signal is consistent and explainable, and any written summary only describes what the deterministic checks already found.
GitAlert is genuinely free for open source, forever. Paid plans exist for teams whose work — and risk — lives in private repositories.
| Free | Team | Scale | Enterprise | |
|---|---|---|---|---|
| Public repositories | ✅ Unlimited | ✅ | ✅ | ✅ |
| Private repositories | — | ✅ | ✅ | ✅ |
| Gamed-test / made-up-dependency / sensitive-file checks | ✅ | ✅ | ✅ | ✅ |
| Sandbox build & test runs | — | ✅ | ✅ priority | ✅ |
| Inline review suggestions | — | ✅ | ✅ | ✅ |
| Premium fail-to-pass runs | — | — | ✅ | ✅ |
| PRs checked at once | 1 | 3 | 10 | Custom |
| PRs checked per month | 150 | 1,000 | 10,000 | Unlimited |
| Support | Community | Priority | Dedicated |
{primary} The short version: Free gives you the safety label on public PRs. Paid unlocks your private repos, real sandbox build-and-test verification, and the volume serious teams need — the parts that protect the code your business actually depends on.
See the pricing page for current prices, the monthly-vs-annual savings, and the exact limits.
If a robot can open a pull request against your repo, you want GitAlert reading it before a human rubber-stamps it.
GitAlert is built to be multi-git. GitHub is supported today, with GitLab and Bitbucket rolling out — so the same neutral check follows your team across providers instead of locking you into one.
There's nothing to install in your codebase, no CI minutes to burn, and no change to how you already work. GitAlert sits alongside your existing checks and adds one more: should a human look at this first?
We take the obvious-but-important stuff seriously, because we'd want the same:
See Privacy & Security for the full details.
Will GitAlert block my merges or break my build? No. It posts an informational check only. It never fails CI and never prevents a merge — you stay in control.
Will it spam my pull requests with comments? No. GitAlert posts a single check with its reasons. No comment threads, no noise.
Does it replace code review? No — it makes review faster and smarter. GitAlert tells your reviewers where to look first; humans still make the call.
Is it really free for open source? Yes. Public repositories are free, forever, no credit card. We only charge for private repos, higher volume, and sandbox verification.
What if GitAlert can't be sure? It says so. We'd rather tell you "couldn't verify this" than pretend to a certainty we don't have. The label is honest by design.
How fast is it? Most diff-based labels post within seconds of a PR opening or updating.
{success} Start free on your public repos, see the value on a real PR today, then turn on private repos and sandbox runs when you're ready.