The Braintree Grant API allows Braintree merchants to provide other Braintree merchants with controlled access to a customer's payment methods. This includes; credit cards, debit cards, and PayPal Channel Initiated Billing Agreements. Braintree provides services for the collection of credit card and PayPal payments programmatically. This API is indirect access to this service, please refer to the corresponding SDK below. The Braintree Grant API is currently in a limited release, developers will need to contact Braintree to request access.