Catch the bugs that
pass every test.
Canary explores your app like a real user, watches the API traffic underneath, and tells you, per branch and per commit, exactly what broke and why. No tests. No setup. No spec.
Built for teams that ship fast
Move fast and break things.
We'll catch it!
(before customers do)
Your tests mock the backend. So a quiet change to your API slips past every green check. Canary is the only thing watching the seam between your frontend and your API.
How it works
Three jobs. One run. Connected causally.
Canary isn't an AI test generator, a monitor, or a contract linter. It's the only thing that does all three at once, and tells you how they're related.
Autonomous · zero setup
Point it at a URL. It explores.
A real browser, driven by an agent that discovers what matters on its own. No recorder script, no recorded sessions, no test authoring, no spec. It explores cold, even a brand-new preview deploy.
Spec-free contract drift
It watches the traffic underneath.
Canary observes live network traffic, infers a per-endpoint response schema, baselines it, and flags drift: a removed field, a string that became a number, a new error status. It works against any backend, with no OpenAPI spec.
Causal · git-native
It names the commit that broke it.
When a drifted endpoint and a frontend break land on the same page in the same run, that is not coincidence. It is root cause. Every finding is stamped with the branch and the first commit it appeared in.
Why Canary
No one else does all four.
Chromatic proved per-branch visual review. Canary is per-branch functional + API review that's autonomous, and it names the commit that broke it.
| Capability → | Autonomous no sessions / no spec | Frontend regression functional, not just pixels | API contract drift spec-free, black-box | Cross-stack + git causal, commit-attributed |
|---|---|---|---|---|
| Meticulous needs a recorder + real sessions; mocks the backend | Partial | Yes | No | No |
| Momentic you author & self-heal tests; shallow API asserts | No | Yes | Partial | No |
| PactFlow Drift requires a provider spec; ignores the frontend | No | No | Yes | No |
| QA.tech point-at-URL, but UI-only | Yes | Yes | No | No |
| Canary autonomous, spec-free, frontend-correlated, git-native | Yes | Yes | Yes | Yes |
Coming from Octomind?
Octomind is winding down. Canary picks up where it left off.
An autonomous replacement that also catches the API breaks they couldn't. We'll run a free migration audit on your next preview deploy and show you exactly what's drifting underneath.
Getting started
From zero to your first verdict in two minutes.
No onboarding call, no test suite to write, no team admin to configure. If you can sign in with GitHub, you're set up — and so is everyone on your repo.
No password
Sign in with GitHub.
One click. Your identity is your GitHub account — nothing to create, nothing to remember.
No spec, no scripts
Connect a repo.
Install the app and pick a repo. Canary baselines it on the spot and starts watching every PR — no test authoring, no OpenAPI spec.
No seat management
Your team is already in.
Teammates just sign in with GitHub. Access mirrors their repo permissions automatically — no invites to send, no roles to assign, no seats to reconcile.
Pricing
Priced per repo. No seats, no procurement.
Install on the platform you already use. A founding engineer can approve it without a meeting.
Free
Scoped PR checks on a single repo. The whole point, on one project.
Start free- Autonomous exploration on every preview deploy
- Spec-free API contract-drift detection
- Frontend ↔ API correlation on the PR
- Commit-level attribution
- 1 repository
Dev
Continuous cross-stack QA across the repos your team actually ships.
Get early access- Everything in Free, unlimited repos
- Per-branch baselines & full finding history
- Continuous monitoring, not just on PRs
- Confidence scoring + “mark intentional” tuning
- Slack / Discord alerts