This PHP SDK provides access to the Braintree Grant API. Developers will need to contact Braintree to request access. The Grant API allows Braintree merchants to provide other Braintree merchants with controlled access to a customer's payment methods. The Grant Webhooks service enables the grantor with the ability to manage the notifications they receive by configuring webhooks with Braintree. Braintree provides services for the collection of credit card and PayPal payments programmatically.