PRODUCT - CRUXY GUARD

Cruxy Guard. Catch bugs before they merge.

Cruxy Guard reviews every pull request automatically. Inline fixes, zero workflow changes.

Add Guard to your repo How it works

feat: add Stripe webhook handler#284

main ← stripe-webhooksOpenCruxy Guard scanning...

app/api/webhooks/stripe/route.ts+47 −0

src/lib/stripe.ts+18 −2

src/db/schema.ts+6 −1

Live preview of a Guard review. Comments animate in as Guard reads the diff.

What Guard catches

Beyond missing semicolons.

Catches the bugs your reviewer would miss

RACE CONDITIONsrc/queue/processor.ts:34

if (job.status === 'pending') {

await job.update({ status: 'processing' })

}

⚠ Read-modify-write without a lock. Two workers can both read 'pending'.

Fix: use a CAS update - UPDATE jobs SET status='processing' WHERE id=$1 AND status='pending'.

Knows when tests are missing

Cruxy Guard · PR review

Severity that matches reality

Severity model

CRITICAL · BUGRace condition in webhook idempotency

CRITICAL · SECURITYMissing signature verification

SUGGESTIONHoist Stripe client to module scope

STYLEUse const where reassignment isn't needed

Critical bugs block your attention. Style notes don’t.

Features

A reviewer that never sleeps.

Reviews every PR in 30 seconds

Triggered on PR open. Results posted before your reviewer has even opened the tab.

Context-aware

Reads the diff, the existing review thread, and surrounding code before commenting.

4 severity levels

Critical, Suggestion, Style, Test Gap. Not everything is urgent - Guard signals what is.

Optional fix branches

Guard can open a follow-up PR with the suggested patch on critical findings. Never auto-merges.

Per-repo profiles

Mute rules, tighten severity, customize comment style per repo.

Polyglot

TypeScript, Python, Go, Rust, Java, Ruby, PHP, Kotlin, Swift, C++.

Who it's for

For every team that ships code.

Solo founders shipping fast

Your second pair of eyes. Catches the null check, the missing auth, the race condition you'd miss at 2 AM.

Small teams without a senior reviewer

Junior PRs land with bugs caught before merge. Senior time stays on architecture, not catching typos.

OSS maintainers with high PR volume

Contributor PRs reviewed instantly. Severity tags let you triage in 30 seconds, merge confidently.

FAQ

Common questions.

Does Guard ever block a merge?▾

No by default. Guard comments and tags severity. Optional CI integration can fail builds on critical findings if you want that gate.

How do I install it?▾

GitHub App. One click on the install page, pick repos, done. ~60 seconds.

Will it open fix PRs automatically?▾

Off by default. Turn it on per repo - when on, Guard opens a fix branch and links it from the review comment. You still merge manually.

What about false positives?▾

Guard explains its reasoning every time. React with 👎 to mute the rule for that repo. False positive rate drops below 5% after the first 50 PRs.

Does Guard see my entire codebase?▾

It indexes your default branch on install (read-only). The index lives in your dedicated tenant and is purged on uninstall. Private repos are never used to train shared models.

How is it priced?▾

Free for public repos. Private repos billed per reviewed PR - see /pricing.

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Ready for a second pair of eyes?

Install in 60 seconds. Free for public repos.

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