Output assertions: the cron job check most monitoring tools skip

Output assertions: the cron job check most monitoring tools skip A follow-up to A reader comment made me realise I'd only solved half the problem — this is a deeper reference guide on output assertions specifically. "Did it run?" is the wrong question. Every monitoring tool asks it. Heartbeat monitors, cron schedulers, even purpose-built tools like Cronitor and Healthchecks.io — they all fundamentally ask: did the job check in? If yes, green. If no, red. It's a useful question. But it's not the