txievery (pronounced "thievery") is a library for dealing with Paypal using Twisted.
The first target for txievery will be the `Express Checkout`_ API. This includes Express Checkout for Digital Goods.
txievery only supports the NVP API (not the SOAP API), and only supports the certificate authentication method (not the signature method). Patches welcome, but nobody sane should be using SOAP or signature authentication.
When first faced with developing using Paypal APIs, many developers have difficulty finding the relevant pieces of documentation. When you try to find some of this stuff yourself, it's easy to discover contradictory information, information on deprecated APIs...