Can Telegram alerts include API assertion failures?

Yes. If an API assertion fails, OnlineOrNot can send the failure details to Telegram with a link back to the check.

Can I route different APIs to different Telegram chats?

Yes. You can connect multiple Telegram destinations on paid plans and choose destinations per API check.

Does Telegram support recovery alerts for APIs?

Yes. OnlineOrNot sends Telegram alerts when the API goes down and when it recovers.

Do I need to create a Telegram bot token?

No. OnlineOrNot uses @onlineornotcom_bot, so there are no customer-owned bot tokens to manage.

Customer-backed and built to last. Read why

Telegram alerts
when your
API endpoint fails

We monitor your API endpoints continuouslyYour team gets Telegram alerts when APIs break

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Trusted by thousands of businesses

Send API endpoint failure alerts to Telegram

OnlineOrNot monitors your API endpoints from multiple regions. When an API returns errors, times out, fails assertions, or becomes unreachable, your team can receive a Telegram alert immediately.

Send alerts to a private Telegram chat, an incident response group, or a channel dedicated to API health.

Keep API failures visible without asking your team to watch dashboards.

How to get Telegram alerts when your API endpoints fail:

Step 1

Connect Telegram

Connect @onlineornotcom_bot to the Telegram destination where API alerts should be sent.

Step 2

Create an API uptime check

Add your API endpoint URL, configure HTTP method, headers, body, and assertions if needed.

Step 3

Select Telegram alerts

Choose Telegram in the check alert settings. OnlineOrNot sends failure, reminder, and recovery alerts.

No credit card required.

Frequently asked questions

: Yes. If an API assertion fails, OnlineOrNot can send the failure details to Telegram with a link back to the check.
: Yes. You can connect multiple Telegram destinations on paid plans and choose destinations per API check.
: Yes. OnlineOrNot sends Telegram alerts when the API goes down and when it recovers.
: No. OnlineOrNot uses @onlineornotcom_bot, so there are no customer-owned bot tokens to manage.

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Trusted by software teams worldwide

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

Uptime Checks last week: 11.8M
Users: 4,164
Detected incidents last week: 775

- 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.
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  Founder of CourseLit
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  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