Your client's checkout broke. They'll tell you on Monday.
Or you can find out on the next scheduled run. Cartainty replays every client's checkout flow on a schedule on the viewport you choose per test (desktop, mobile, or tablet), so you catch the regression before they catch it on their revenue dashboard.
Free: 1 saved checkout test and 10 manual runs per month. Scheduled testing starts on paid plans.
What ecommerce agencies deal with every week
A client's checkout silently breaks
A theme update at 2am breaks the payment step on mobile. The client emails you Monday: “why is revenue down this weekend?” You scramble. They lose trust.
A coupon code stops applying
A discount app updates over the weekend. The flagship promo doesn't apply at checkout. Customers see full price and abandon. The client blames the ad campaign you're running.
No coverage across the portfolio
You manage 20 ecommerce clients. You can't manually click through every checkout every day. Something always slips through. You only find out when the client notices first.
How Cartainty covers your portfolio
Record each client's checkout once. Cartainty tests them all, on a schedule.
- Scheduled checkout tests per client
- Record each client's checkout in the Chrome extension (Pro and Business), or generate it from the store URL. Set the schedule per test: hourly for high-traffic stores (Business), daily or weekly for the rest. Headless Chromium runs the steps up to payment.
- Failure alerts on the next run
- When a scheduled run fails on any client's checkout and a re-run confirms it, you get an email (plus Slack on Pro and Business) with the broken step, the error, and a screenshot. At most one alert per test per hour, so a stuck test doesn't spam your team.
- White-label PDF reports
- Client reports showing what was tested, which checks failed, and when a later check passed. Times are when checks ran, not exact customer impact. Your agency branding on Starter, Pro and Business.
Checkout report
SEP 15 – OCT 15 2026
Lumen Skincare (sample store)
- Checks run
- 64
- Passed
- 62
- Failed
- 2
- Incidents
- 1
| Flow | Result |
|---|---|
| Add to cart and reach payment | 2 FAILED OF 30 |
| WELCOME10 discount applies | 30 OF 30 PASSED |
| Guest checkout reaches payment | 4 OF 4 PASSED |
| Shipping rates for Canada | PAUSED |
Incident: Add to cart and reach payment failed from Oct 9 and passed again on Oct 11. Open the failed run
Why ecommerce agencies choose Cartainty
- Record a checkout with no code and no test team (Pro and Business)
- Multi-client workspace, every portfolio in one dashboard
- Cover many client stores from one account, up to 30 checkout tests on Business
- Deploy webhook: trigger a site scan after every client deploy
- White-label PDF reports with your agency branding (Starter, Pro and Business)
- Bonus: pixel + cookie + consent monitoring on every plan
What does one missed checkout regression cost?
For a client doing $5M a year, six hours of broken checkout at average hourly sales is about $3,400 in orders, plus the customers who tried, failed, and never came back. One missed regression on one client can cost more than a year of Cartainty.
| Without Cartainty | With Cartainty |
|---|---|
| Manual spot-checks (or no checks) | Every client's checkout tested on a schedule |
| Find out about checkout breaks from the client | Alerts once a re-run confirms the failure |
| No proof of what you caught or when | Timestamped run history (30 to 90 days, by plan) |
| Reactive scramble every Monday | Proactive, professional, retainer-defending |
ONE MISSED REGRESSION
ILLUSTRATIVE CLIENT
PLUS SHOPPERS WHO DON'T COME BACK. AN ESTIMATE, NOT A PROMISE.
Stop finding out from your clients.
Free: 1 saved checkout test and 10 manual runs per month. Scheduled testing starts on paid plans. No card for Free; paid plans start with a 0-day trial.