

Settings → SiteBeacon Reporter: token, "Send now" and the last result.
When your site goes down or something breaks, SiteBeacon tells you by email, so you don’t hear it first from a customer.
SiteBeacon Reporter connects your WordPress site to SiteBeacon, a website monitoring service (uptime checks every 5 minutes, page content checks, SSL and domain expiry). The free plan monitors up to 2 sites, with no time limit.
Uptime checks from the outside can tell you that a site is down. They cannot tell you that a plugin update is waiting, that debug.log is filling up with fatal errors, or that someone changed a core file. This plugin reports those things from the inside.
Once an hour it sends a small JSON report to SiteBeacon:
debug.log since the last reportSiteBeacon shows these on the site’s page and emails you when something needs attention.
Right after activation the plugin connects nowhere: not to SiteBeacon, and not to WordPress.org. Reports and the daily file check start only after you save a SiteBeacon token. When you remove the token, both stop.
debug.log lines, error messages, or absolute server pathsA SiteBeacon account. The free plan monitors up to 2 sites.
This plugin connects to the following services. Nothing is sent, and no connection is made, until you save a SiteBeacon token.
SiteBeacon (s-m.biz) – the monitoring service this plugin reports to.
akismet/akismet.php, version, available update, up to 200), the number of inactive plugins, the number of users per role, the number of fatal errors and warnings added to debug.log, the last published post time, the next scheduled post time and the number of scheduled posts, the number of WP-Cron events late by more than 1 hour and the longest delay, failed logins and lockouts in the last 24 hours (only with SiteGuard WP Plugin), the result of the daily file check (counts, and up to 10 relative paths for core and for each plugin, 50 plugin paths in total; or “turned off”), and the result of the last automatic update (counts and the slugs of up to 5 failed items).https://s-m.biz/siteb/api/v1/siteb/report (HTTPS POST, with your token in the Authorization header, 10 second timeout).WordPress.org checksum API – used by the daily file check.
https://api.wordpress.org/core/checksums/1.0/ and https://downloads.wordpress.org/plugin-checksums/