Get information about alert transport in alert rule via API

Hi,
I’m trying to connect data about alerts taken from libre API with the Advantech SmartStart Router which allows me to send SMS to the specific number.

I know there are ways to send SMS on alert with other tools, however they all seem to require network connections.

So far I managed to make script which sends SMS to the given number whenever alert appears or disappears.

Now I would like to be able to specify where SMS should be send, by checking transports assigned to the alert rule. However, it seems like API doesnt have such option.

Is there any chance that data about transports could be added to API? And then I would need new transport type which only requires a field with phone number