Does the Create a Document module’s output return any sort of share link you could already use?
If not, which endpoint do you want to call?
If you need assistance in setting up the app’s universal module, please provide additional information about what you have tried with regards to the external service’s Developer API Reference – how you are setting up the connection, a link to the endpoint’s documentation that you are trying to connect to, and any errors you are encountering.
You can also complete this brand new course/tutorial in the Make Academy on how to use external APIs — API calls with HTTP modules