Customers pay for status pages, team features, alert routing to SMS and PagerDuty, and a monitor hosted independently of their own infrastructure.
REPLACEMENT BRIEF
cron monitoring
Can AI replace Cronitor?
EDITORIAL ANSWERYESBuilt & verified
A heartbeat URL that alerts when a job misses its window is roughly a hundred lines of code. Build it if you have a place to run it that will not fail along with the jobs it watches.
Build an automated heartbeat monitoring daemon that accepts HTTP pings from scheduled jobs, evaluates grace intervals, and triggers alerts on missed runs.
Build the personal version →AT A GLANCE
- price
- $10/mo
- listed bill at stake
- $120/yr
- replaceable scope
- Build an automated heartbeat monitoring daemon that accepts HTTP pings from scheduled jobs, evaluates grace intervals, and triggers alerts on missed runs.
- build time
- one sitting
Build promptverified build prompt
the prompt
Built & verifiedBuild me a cron-job monitor like Cronitor / Healthchecks. Requirements:
- Each monitored job gets a unique ping URL (/ping/:uuid). The job's crontab
line just appends `&& curl -fsS <url>` · document this.
- Define jobs in SQLite via a basic-auth /admin page: name, expected period
(e.g. every 60 min) and grace time. Store every ping with timestamp.
- A scheduler loop checks each job: if now > last_ping + period + grace, the job
is LATE → send one alert webhook (Discord/Slack/Telegram, URL in .env) with
the job name and how late it is. Alert again on recovery. No alert spam ·
one per state change.
- /admin dashboard: each job as a row with green/amber/red status dot, last ping
time ("7 min ago"), and a 24h ping histogram as inline SVG.
- Support /ping/:uuid/fail for explicit failure reports with an optional body
shown in the alert.
- Python or Node, single process, systemd unit included.Copy or open in an agent
The prompt stays readable first. Choose a launch option when you are ready.
$ open in your agent (prompt prefilled, you press enter) or copy it raw
what AI can build
Build an automated heartbeat monitoring daemon that accepts HTTP pings from scheduled jobs, evaluates grace intervals, and triggers alerts on missed runs.
A verified build record exists; inspect its artifacts and limits.
The honest tradeoff
why people still pay
what you lose
xtheir status pages and team features
xalert routing (SMS, PagerDuty)
xcron expression insights
Start with existing software
prior art · use these instead of building, if you'd rather
EVIDENCE LEDGER
What this page can prove
The verdict judges replaceability. The evidence level records what DeepFeather actually checked.
evidence level
Built & verifiedA verified build record exists; inspect its artifacts and limits.
Current catalog reference
known limits · their status pages and team features; alert routing (SMS, PagerDuty)
BUILD FEEDBACK
Did you try this build?
Report the outcome. Submissions enter a manual evidence queue and never auto-upgrade the verdict.
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questions
Can AI replace Cronitor?
Yes — DeepFeather has a dated build result for this workflow. Review the evidence and limitations before treating it as a full Cronitor replacement.
How much does Cronitor cost?
Cronitor is listed at about $10/month (paid plan, checked 2026-07-29), or $120 per year. This is a pricing reference, not evidence of a completed replacement or realized savings.
What do I lose by replacing Cronitor?
Honestly: their status pages and team features; alert routing (SMS, PagerDuty); cron expression insights. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to Cronitor?
Yes — Healthchecks (excellent open-source cron monitoring). Using prior art is also a valid exit; the prompt is for when you want it exactly your way.