How to make auto invoices in PayPal for a shop?

[Nab]

I'm trying to make a services shop with auto generated invoices, like when the client buys something its direct him to a PayPal invoice? I think idk i need help lol

 

[Jami]

There's a public API for PayPal that let's you do this and some other cool stuff.

https://developer.paypal.com/docs/api/invoicing/v1/