Code review that gets to the point.
Corax is your go-to GitHub App for pull request review. Every PR gets a clear verdict and the findings that actually matter — each pinned to a file and line, with fixes you can commit in one click.
Install → pick your repos → open a PR. No YAML, no pipelines, no credit card.
corax-reviewcommented just now
Verdict: blockers · confidence: high · checked: full diff, tests
src/auth/session.ts:42Token refresh runs before the expiry check — expired sessions get renewed instead of rejected.
src/api/orders.ts:118getOrder is also imported in reporting.ts — this signature change will break that call site.
src/lib/retry.ts:8Is maxAttempts = 0 meant to disable retries? Right now it still retries once.
What it does
Everything you need to decide on a PR — and nothing you'll skim past.
Starts where you start: the intent
Corax reads your PR description first, then AGENTS.md, CONTRIBUTING.md and the docs they point to. Your change is judged against what you set out to do — and the rules your repo already lives by.
A verdict you can act on
Every review opens with one line: blockers or no blockers, how confident Corax is, what it checked and what it couldn't verify. A clean PR gets a clear “no blockers” — not a page of filler.
Every comment earns its place
Bugs, regressions, security and missing tests come first. No style nitpicks, no compliments, no recap of your own diff. Blockers come with proof: the scenario that breaks, or the repo rule it violates.
Sees past the diff
Corax works on a full checkout of your branch, so it spots the change that breaks a caller two files away — a renamed export, a shifted signature.
Just say /corax
Wondering why something was flagged? Ask in the thread. Want it fixed? Ask for that too — Corax commits and pushes for owners and collaborators. Fork PRs aren't supported yet.
Keeps score on every push
New commit, fresh look: Corax tells you what's Fixed, what's Still open and what Regressed — no rereading the whole review.
/corax add null checks in parseWebhook
Committed & pushed to fix/webhook-null-guards
Auto-fix + push requires owner or collaborator access. Pull requests from forks are not supported yet.
session.ts:42 — expiry check now runs before refresh.
orders.ts:118 — call site in reporting.ts still needs updating.
retry.ts:31 — new loop can exceed the deadline budget.
Not a linter. Not a chat window.
Keep your linter for the rules it enforces — Corax handles what no rule can express.
| Capability | Linters | AI Chat assistant | |
|---|---|---|---|
| Reads the PR's intent and your repo's guidelines | |||
| Comments on the exact file and line | |||
| Answers follow-ups right in the PR | |||
| Re-reviews every push | |||
| Ready the moment you install |
How it works
No YAML. No webhooks to wire. No config files to maintain.
Install & pick your repos
GitHub checks you're an owner or admin and lets you choose repositories right in the install flow. Nothing else to wire up.
Open a PR — Corax takes it from there
It reads the diff and the thread and posts its review. Every new commit gets a re-review.
Want to pick the model, add your own review guidelines or watch a run live? The dashboard at app.getcorax.com has you covered — entirely optional.
Security & trust
What actually protects your code today — not promises, current behavior.
Isolated Docker sandbox
Every review runs in its own Docker sandbox, torn down (--rm) after each run. The host filesystem stays isolated from your code.
Authorization gate
Only repository owners and collaborators can trigger actions. Pull requests from forks are not supported yet, so untrusted code never reaches the sandbox.
We run the infrastructure
Corax uses external LLM providers — we do not self-host models. The code is closed source and the infrastructure is run by us.
Least-privilege GitHub permissions
- Read pull requests, issues, and repository contents
- Write PR review comments and issue comments
- Write contents — only for auto-fix on repos you own or collaborate on
On the roadmap: scoped short-lived tokens · model proxy (no raw keys) · network egress allowlist · fork PR support
Pricing
Four tiers are being finalized with early users — install free today, no credit card.
Free
Our models, review-only
Coming soon
- 5 reviews per month
- Review and delta re-review
- Models from our rotation
- Region preference (US / EU / Other)
- No credit card required
Standard
Model selection & chat
Coming soon
- Monthly credit pool
- Chat replies and issue analysis
- Model selection
- Bring-your-own-key (BYOK)
- Top up with extra credits
Plus
Bigger pool, volume discount
Coming soon
- Larger credit pool at a volume discount
- Everything in Standard
- Cheaper extra credits
Pro
Priority & support
Coming soon
- Largest credit pool with bonus credits
- Bring-your-own-key (BYOK)
- Priority queue
- Dedicated support
Plans use a pool of credits; each review costs what it actually uses. Pricing is being finalized with early users.
Let the raven take first pass
Install Corax, open a pull request, and see what it finds — for free.