Cron doesn't tell you when a job silently stops firing — a bad deploy, a typo in the crontab, a server migration. Seiri watches for the ping your job should send, and alerts you the moment it's late.
A server migration, a config management change, or a typo removes the line entirely. Cron doesn't log an error — it just never runs.
A guard clause, an empty result set, or a bad config makes the script return success without doing the actual work.
A lock file never releases, or a dependency stalls. The process is still "running" — forever — and never completes.
If the host is unreachable, cron never fires at all. There's no error to catch because nothing ran to produce one.
Create a monitor with the same cron expression (or interval) as your job, plus a grace period to absorb normal runtime variance.
Chain a curl request to the end of your job so it only pings when the script actually completes.
If the ping doesn't show up inside the grace period, Seiri fires an alert to Slack, email, SMS, or a webhook.
No outbound HTTP access? Send an email to your monitor's unique @ping.seiri.app address instead — see email heartbeat monitoring.
Same product story, different search intent — start with the page that matches how you found Seiri.
Push-based check-ins when work finishes
Alert when the expected signal never arrives
Batch, ETL, and recurring tasks
Catch CronJobs that never fire or hang
Helm HealthCheck operator for the cluster
Check in without outbound HTTP
Uptime monitoring polls a URL to see if a server responds. Cron job monitoring works the opposite way: your job pings Seiri when it finishes, and Seiri alerts you if that ping doesn't arrive on schedule — catching jobs that hang, fail silently, or never run at all.
Yes. Create one monitor per job, each with its own schedule and grace period, and add the matching ping to each cron entry.
You can define a monitor by cron expression or by a simple interval (e.g. every 6 hours), and set a grace period to account for normal runtime variance.
No — it complements it. Error tracking tells you when code throws an exception. Seiri tells you when a job didn't run or didn't finish at all, which error tracking can miss entirely.
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