Know the moment your cron job goes quiet.
Passive liveness checks for cron jobs, scripts, and background workers. One HTTP request after each run tells us you're alive — miss it, and your team hears about it in seconds, not from a customer.
Free forever for unlimited jobs, up to 25 checks/day. No credit card.
No agents. No polling. Just a ping.
Your job tells us it ran — we only speak up when it stops telling us.
Get your token
Log in and generate a unique API token from your account settings.
Ping after each run
Send a POST request with your token, job ID, and expected next run.
-d "token=..." -d "job=daily-backup"
Get alerted
If a ping doesn't land on time, we notify your team where they already work.
Everything you need to sleep through the night
One dashboard for every scheduled task in your stack, no matter what runs it.
Real-time status
Every agent and script in one place, with historical uptime tracking.
One-line integration
A single curl command or HTTP request is all you need. No SDKs.
Instant alerts
Email, Slack, PagerDuty, Grafana OnCall, or a plain webhook.
Minimal data
We store only the metadata required to alert you. Nothing else.
Reliability is the entire product
maer.io is maintained by Kirimure, a team that has run production SRE tooling for years. A monitoring tool that goes down is worse than none at all — so we built ours to not.
Payload storage
We never see your logs, secrets, or job output — only that a ping arrived on time.
Alerting infrastructure
Checks are received and evaluated redundantly, so a regional outage doesn't cost you a missed alert.
Backed by an SRE team
Built and operated by the same engineers who run incident response for our own infrastructure.
Alerts where your team already works
Connect your incident and communication tools in seconds — no polling, no plugins to babysit.
Start free. Upgrade when you outgrow it.
No trial clock, no seat pricing, no surprise invoice.
For unlimited jobs, up to 25 checks per day.
- Unlimited jobs and endpoints
- Up to 25 checks per day
- Real-time status dashboard
- Email & webhook alerts
For teams running more jobs, more often, with less room for delay.
- Unlimited jobs and endpoints
- Up to 2,000 checks per day
- Slack & PagerDuty integrations
- 90-day check history
- Priority support
Running a larger fleet? Talk to us about custom plans.
Frequently asked questions
Stop finding out about failures from your users.
Set up your first check in under two minutes. Free forever, no credit card.