In the command above, I included the date of execution. That way, I can script this to run once a day, storing results in an HTML file in some directory. Then, I can compare results over time and see when issues popped up.
I can also parse the resultant HTML if need be. Note that this won’t be trivial: even though the output looks like a simple
 "PROBLEM ALERT", there’s a more complicated HTML blob.
At some point I’ll probably have follow-up thoughts on the topic. Probably.