1-Access your Braintree Sandbox or Production account
Log in to your Braintree account

To use the API it is necessary to have an account.
2 - Acesse o dashboard no menu Settings > API
3 - In the Private Key column, click on the View link to access the credentials.
4 - Your keys will be displayed. To use Scriptcase we will need the following information:
Public Key - Each user associated with your Braintree gateway will have their own public key.
Private Key - Each user associated with your Braintree gateway will have their own private key. Your private key must not be shared outside of using an API call.
Marchant ID - Your Merchant ID is the unique identifier for your entire gateway account, including the various merchant accounts that may be on your gateway. Often called a public ID or production ID, your Merchant ID will be different for your production and sandbox gateways