Hi sandy weill, thanks for reaching out. What do you mean by affiliate commission?

It is best to sign / set up a Sage Business Cloud Accounting developer account at  https://developer.sage.com/api/accounting/quick_start_guide/

Information on the APIs available for our other product lines which are completely cloud based, can be found here. 

Let us know if you have further questions.

Warm Regards, 
Erzsi