• Log into the store.
  • Go to Advanced Settings.
  • Click API Accounts.
  • Click Create API Account.
  • Type the name of the user in the Username box.
  • There you will find API Path box. Copy its value.
  • Click Content - modify, Checkout Content - modify, Customers - modify, Customers Login - login, Information & Settings - modify, Marketing - modify, Orders - modify, Order Transactions - modify, Products - modify, Themes - modify, Carts - modify.
  • Click the Save button. There will appear a window BigCommerce API Credential with Client ID, Client Secret and Access Token.
  • Add BigCommerce store to your API2Cart account, using credential you've got in steps 6 and 8.