api for smf and idev

I need a simple api built so when a user signs into smf, they are also signed into idev affiliate software. this is super easy to do I just have no luck finding instructions on how to connect api's. I will even pay for good and easy to follow instructions that guide me on how to do this. iDevAffiliate runs independent of other software and integrates directly with your cart system. You can integrate VirtueMart, aMember, AEC, etc. without having any plugin. The plugin (discontinued) is only needed if you want to take customer data from the standard cms (in this case smf) signup form or VirtueMart signup form and auto-create them an affiliate account in iDevAffiliate.