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Slack alerts
when your
cron job fails

We monitor that your scheduled tasks run successfullyYour team gets instant Slack alerts when cron jobs fail

No credit card required

Trusted by thousands of businesses

Setup Slack alerts when your cron jobs fail in seconds

OnlineOrNot monitors your cron jobs and scheduled tasks using a simple heartbeat approach. Your cron jobs ping our service when they complete successfully. If a job fails to check in on schedule, your team will receive instant Slack notifications so you can collaborate and take action immediately.

Perfect for monitoring database backups, data processing jobs, report generation, and any other critical scheduled tasks. Keep your entire team in the loop with real-time alerts delivered directly to your Slack workspace.

Try OnlineOrNot now!

How to get Slack alerts when your cron jobs fail:

Step 1

Sign up for free

Create your OnlineOrNot account in less than 30 seconds. No credit card required to get started.

Step 2

Connect your Slack workspace

Integrate OnlineOrNot with your Slack workspace using our simple one-click setup. Choose which channels or team members should receive alerts.

Step 3

Add your cron job and get instant alerts

Create a new cron job monitor and get a unique heartbeat URL. Add a simple curl command to your cron job. Your team will be instantly notified in Slack when jobs fail to check in.

Start a free trial

No credit card required.

Frequently asked questions

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People ❤️ OnlineOrNot

OnlineOrNot is built for scale and runs millions of uptime checks every week. Thousands of sites, startups and some of the world's leading brands have already made the switch from other uptime monitors.

Uptime Checks last week: 11.4M
Users: 3,763
Detected incidents last week: 12,172

- OnlineOrNot has been absolutely fantastic for my bot, Noti. It completely transformed the way I monitor online services.
  The real-time notifications keep me in the loop about any downtime, allowing me to take immediate action. If you're looking for a reliable way to monitor your project's status, I highly suggest using OnlineOrNot.
  Adam H
  Maker of Noti
- Bet on indie hackers 🚀
  I tried @RozenMD's OnlineOrNot uptime monitoring, and for a few days got notifications of 2min down time.
  I thought that OnlineOrNot was wrong as Uptime Robot wasn't reporting anything.
  Turns out it was the other way around.
  Khaled Bentoumi
  Founder of Data to Page
- We've been using OnlineOrNot and it has been a life saver.
  It, by far, has been one of the most responsive uptime services we've tried and it only gets better and better as time goes on.
  Alex Bowles
  Founder of Casterlabs
- I just set up some site aliveness checks for @Archium_io with @RozenMD's OnlineOrNot.
  Took me less than five minutes and it was completely self-explanatory, not to mention gorgeous. Seriously good experience.
  Great job, Max! 👏👏
  Graham Lea
  Founder of Archium.io
- OnlineOrNot by @RozenMD is all one needs
  It is easy to set up and very reliable. I have been using it for almost an year now.
  Rajat Saxena
  Founder of CourseLit
- I'm using OnlineOrNot to monitor my @cloakist customers' sites, so I can respond quickly if they stop working
  Love it. Super clean interface, very intuitive. Particularly impressed at how it can wait for full page load
  Thanks @RozenMD for making this awesome tool!
  Louis Barclay
  Founder of Cloakist
- OnlineOrNot does the job for me.
  Charles Miller
  Software Architect at Atlassian