Can you share more details or maybe a link to the tutorials you’re referring to?
If the goal was to push an event from SmartThings down to your phone, you could probably use a SharpTools.io Rule and have it push an event to the phone using Pushover.
Alternatively, there’s some community developed ‘servers’ that you can run on a Raspberry Pi or NAS and those expose REST APIs. You could use the Web Requestor Edge Driver to call one of the endpoint from one of those servers.