I’ve come across many websites that promote Envato items and use affiliate links for their purchase buttons. I’m not sure about the legal aspects of this, but I believe it’s acceptable. You can refer to the “What do we mean by ‘app’?” section in the basics of the Envato API for more clarity (Envato API - Basics). However, it’s always a good idea to contact Envato’s support team directly (Support Request Form) to get a clear understanding of their policies. Also, keep in mind that there’s a rate-limiting process that could temporarily halt services or even lead to suspension if overused, so that’s something to consider.