Plugin which uses local or external server

Hello,
is it allowed to make a Plugin where the user has to provide a server URL for external application which is free and can be installed locally or on external server?
For testing it would no problem to provide an URL.
Thank you!
Nicolay

Hi, I know it is possible for a Photoshop or XD plugin to connect to a server URL that hosts an external application. Not sure how that will work if it is the user who has to provide the server URL