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Small-business owner at a laptop in a sunlit café, browser open to a SiteGuardian tab.

Monitor

WordPress monitor for the plugin-conflict theme update that quietly broke checkout on Black-Friday morning.

A WordPress site rarely goes hard-down. It goes wrong-on-checkout because a payment-plugin update met a PHP-version bump and the cart page now answers in nine seconds. SiteGuardian watches the URLs a buyer types, on a minute cadence, before the next plugin update becomes the next refund queue.

  • Watches your WordPress home page, /cart, /checkout, and wp-admin login as separate URLs.
  • Tight slow threshold on /checkout. 1.5 seconds is sane for most stores.
  • Probes every minute on Pro. Fast enough to catch the plugin-update day /checkout tipped above threshold.
  • SSL expiry alerts on every plan. A renewing cert is the most common silent breakage on WordPress.
  • No WordPress plugin to install, no wp-config edit, no PHP-version mutex to set.

How it works

Setup, in three beats.

  1. Step 01

    Add the URL a paying shopper types first

    Paste your home page, /cart, /checkout, and the wp-admin login. Set a tight slow threshold on /checkout (1.5 seconds is sane) and a slightly looser one on /cart. SiteGuardian starts probing inside the next minute, no WordPress plugin required.

  2. Step 02

    Let the alerts catch the plugin-update day

    Most WordPress slowdowns come from a payment-gateway plugin update, a PHP-version bump, or a heavier theme merged into a child theme. The minute cadence catches the day the change happened, before the partial-charge ticket reaches your support inbox.

  3. Step 03

    Catch the gateway failure before the partial-charge queue starts

    A /checkout that returns 500 on Black-Friday morning loses the spend and starts a partial-charge queue by lunch. SiteGuardian probes every minute on Pro, so the email reaches your inbox the second the page stops — before the refunds roll in next morning.

What the alert actually says

One email. One URL. One timestamp.

Your URL https://yourstore.com/checkout/ answered with HTTP 502 at 11:47 UTC, immediately after the WooCommerce Payments 7.4.1 update. The probe will retry in 60 seconds.
WordPress monitor alert · SiteGuardian default

Frequently asked

The wordpress monitor 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.

Stay updated

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