Is it possible to monitor specific parts of a page (eg via xpath)? I have a nightly cron job running that dumps data to the database. On the homepage of the we

Is it possible to monitor specific parts of a page (eg via xpath)? I have a nightly cron job running that dumps data to the database. On the homepage of the website it says how many new entries were created overnight. If that amount is zero, there's a 99% chance the cron job failed. It would be nice to be notified if the homepage says 0 entries were created overnight.