how do you make an API request to third party API from an custom install page

Hello, 

Is there a way to make an third party API request from the custom install page (The host to the third party API is entered as an input to the iparam)

Here is my use case,

The host of an third party service is given as an input to the iparam. The host has to be validated by making an API request to a specific endpoint of the host. 

Is there a way to solve this?

Note: Using FDK platform version 2.3 (Request Template method)

Thanks.