You can find your API credentials on the ‘API Keys’ tab of the App Center. This is where you will locate your:
Client ID - the ID of your API application.
Client Secret - This is a secret value for your API application. Do not share this with anyone (including us!)
Access_Token - This is the access_token that grants your app permission to do things on behalf of the application owner.
Account_ID - this is the ID of the payment account where you can collect money. All app_fees will be deposited into this account.
WePay will never ask you for your production environment Client Secret or Access_Token.