I sell a product and membership on Clickbank.
Clickbank has an API, and passes values during purchase (http://www.clickbank.com/help/account-help/account-tools/clickbank-api/)
ZenDesk also has an extensive API (http://www.zendesk.com/api)
I want to create users in ZenDesk during the purchase process with Clickbank, and explore the option of updating the users when they cancel, refund, or upgrade.
I’m not a programmer so I don’t know to what extent the API’s can interface. The winner of this will have to verify this with me before starting and give summary of how it will work.