End-to-end QA for your user journeys
Ship with the QA agent that uses your app like a real user
Zerocheck opens your app in a hosted browser, steps through user journeys, fills forms, and records each run with screenshots, video, and step traces.
Checkout discount code should still reach confirmation
Starter kit
2 items - guest checkout
Discount
SPRING20
Safe card
4242 4242 4242
Checking discount, shipping, tax, and safe card in one browser run.
Recording 00:28 · Screenshots 6 · Step trace
For teams shipping with
Claude Code
Codex
GitHub Copilot
Cursor
AI can ship changes in minutes, but reviewing and testing still takes hours.
Teams now build fast with Claude Code, Codex, Cursor, etc. You can't test every change by hand. Zerocheck fills that gap: it runs your flows in a real browser on every PR and monitors production for breakages.
of CI failures are flaky tests, not real bugs.
Google Testing Blog
of testing budget goes to maintaining brittle tests.
World Quality Report
What Zerocheck does
One workflow from PRs to production
Discover critical user flows.
Zerocheck reads the PR and your app context, then suggests automated tests for the paths most likely to break.
See change-aware testing →
Run approved checks on every change.
The approved suite runs in a real browser, and the recording, screenshots, step trace, and run evidence land where engineers already review code.
See run evidence →
Maintain tests without selector rewrites.
Zerocheck finds elements by their text, visual placement and accessibility role, so tests keep working when the UI moves.
See zero-to-CI setup →
Keep monitoring production after merge.
Approved critical tests keep running against production, so customer-facing regressions raise an alert with browser proof.
See production monitoring →How it works
From your URL to approved journey coverage.
1.Give Zerocheck your production or staging URL.
~5 minAdd the app or website your users depend on. No install required. Zerocheck opens it in a hosted browser and steps through the flow.
2.It finds candidate journeys and drafts tests.
One-timeThe agent explores your product, identifies important user journeys, and saves draft tests for your team to review, edit, and approve.
3.Approved tests run on every change.
Per PRConnect GitHub to test feature branches and preview builds before merge. With repository access, Zerocheck can inspect the change and suggest new automated tests for affected journeys.
4.Production stays monitored after release.
Always onThe same approved tests can keep running against production on a schedule, with recordings, screenshots, and step traces when something fails.
Why I built Zerocheck.
I spent years watching the same pattern repeat across teams: add Playwright tests → a redesign breaks half of them → nobody fixes the selectors → tests get commented out → production breaks six weeks later. The tests failed because they depended on selectors that changed during redesigns.
Zerocheck opens the app in a browser, uses the accessibility tree, and validates the action the user was trying to complete. It finds candidate journeys, drafts tests for review, and keeps approved checks running as the app changes. Every run produces a recording, screenshots, and a step trace that get posted back to the PR.
If that matches something you’re working on, start a QA run or reach out directly.
AI testing that replaces manual QA click-throughs and leaves a recording on every run
Change-Aware Testing
When a PR touches product behavior, Zerocheck reads the diff, identifies critical flows at risk, and suggests automated tests while context is fresh.
See change-aware testing →Zero to CI
Point Zerocheck at staging, let it discover critical flows, review suggested tests, and start running browser QA checks without building Playwright infrastructure.
See zero-to-CI setup →Run Evidence
Every QA run captures recording, screenshots, step trace, and commit-bound evidence so your team can trust what passed and what failed.
See run evidence →You’re already paying for app testing
CI passes, but code alone does not prove the app works.
Unit tests catch code issues. They miss a broken checkout, or a CSS change that hides the buy button. The manual click-through your team still does is the QA run Zerocheck automates.
Playwright still needs setup and maintenance.
Wiring it into CI, writing selectors, and fixing them when the UI changes costs 20+ hours a week.
See the browser run that failed.
You get a recording, screenshots, and step trace posted on the PR while you’re still in the code. When something fails, you see the recording of what went wrong and the exact step that broke.
“Can’t I just use Playwright MCP with Claude Code?”
Playwright MCP gives your coding agent a browser. You still write the test logic, handle assertions, and wire it into CI yourself. Zerocheck reads your diff, suggests tests for review, runs your approved suite, monitors production, and posts results with recording, screenshots, and trace.
Frequently asked questions
Start a QA run on your app
Watch the browser run your flows. When something breaks, you get the recording, screenshots, and step traces.