Sends notifications to mobile phones (iOS and Android) using the ntfy.sh service
For details, please check https://ntfy.sh
Install the ntfy app on iOS and Android on your phone

Checkmk usage
Select the 'ntfy-plugin' as notification plugin

• Parameter 1 (mandatory): Provide a unique topic, which you also need to add in the app
  
• Parameter 2 (optional): Provide an access token in the format 'Bearer tk_AgQdq7mVBoFD37zQVN29RhuMzNIz2'
  

Some additional noteworthy comments
* In FREE mode, you can send only 250 messages per day. Sufficient for home usage or * testing, but get an account if you are a company.
* To reserve a topic exclusively for you, you need an account. For testing or home usage, just select a topic, which is unique
* For testing, the plugin can be used without an access token
* Error messages are written to ~/var/log/notify.log. In case of any issue, please have a look there
* This is my first Python program. Please look at the code with clemency. I used VC Code with Pydantic (type checking mode: Basic) and Black