Capability
Checkout failure monitoring: what a slow /checkout costs you per day.
A /checkout that returns 200 but takes nine seconds costs every shopper who hit the “Place order” button. They waited; they abandoned; they remember. Checkout failure monitoring is the minute-cadence probe that catches the day the gateway slowed down, before the refund queue starts.
- Probes /checkout and /cart every minute on Pro. Every five minutes on Starter.
- Tight slow threshold per URL. 1.5 seconds is a sane default.
- Multi-region probing so a CDN hiccup does not falsely trip.
- SSL cert check on the same URL. Sale-page expiry is the worst kind of late news.
- No Shopify app, no WooCommerce plugin, no payment-provider SDK required.
How it works
Setup, in three beats.
Step 01
Add the /checkout and /cart URLs a buyer types on the day they decide
Paste https://yourstore.com/checkout (and /cart if you sell there). Set a slow threshold of 1.5 seconds — the boundary most stores want. SiteGuardian starts probing inside the next minute, no Shopify / WooCommerce / BigCommerce SDK required.
Step 02
Let the minute-cadence email find the silent slowdown
Most checkout pages start fast and get slower over months: a payment-plugin update, a heavier theme, a tracking-pixel load. A weekly uptime check misses it; a minute-cadence probe catches it the same hour it happens. The alert names the URL, the new TTFB, and the prior-day baseline.
Step 03
Catch the gateway-side slowdown before the refund queue starts
A /checkout that returns 502 for ten minutes loses revenue the next hour. A /checkout that returns 200 but at nine seconds for ten days loses revenue the whole month. Checkout failure monitoring catches both with the same one-email signal — the URL, the threshold, the new TTFB.
What the alert actually says
One email. One URL. One timestamp.
Your URL https://yourstore.com/checkout answered slowly at 4,820ms (your threshold is 1,500ms) at 14:32 UTC. The pattern matches the start of a gateway-side slowdown.Frequently asked
The checkout failure monitoring questions, answered flat.
Frequently asked
Try it
Start monitoring my site.
Starter is $19 a month — one site, ten URLs, every-five-minute checks. Pro is $39 a month — three sites, fifty URLs, every-minute checks. Lifetime is $299 paid once and stays yours with every future update included.
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