This bundle contains functionality for accessing PayPal's Merchant API and specifically uses the Name-Value Pair API. You can use these methods to get an account balance, work with payments, search transactions, and more.
To use the Choreos in this bundle, you'll need a PayPal developer account. You can sign up for one here.
After signing up for a developer account, PayPal generates a test account for you to use with the sandbox environment. This test account will have credentials that you'll need in order to authenticate with PayPal. You can find your credentials by clicking on "Sandbox accounts" in the left panel, and then selecting "Profile" under default test account. On the Account Details page, click the tab for "API Credentials", and you'll see your Username, Password, and Signature which you'll use to execute these Choreos.
Note that when testing with the PayPal Sandbox, you must enable the sandbox setting for each Choreo by setting the UseSandbox input parameter to 1.