Button Manager APIs let you create, manage, edit, and delete Website Payments Standard buttons. Create payment buttons that let customers purchase single or multiple items, make donations, set up recurring payments, or buy gift certificates. When you make hosted buttons with an API call, you'll get an ID to view and change button parameters. You can even use our APIs to manage inventory.Do all this for online merchants without needing their PayPal account information. This is especially cool when you're developing lots of sites or managing other people's buttons.