To configure and customize your service plugin, you need to provide important details in the plugin.json configuration file.
If you created your service plugin extension with the CLI, required fields are automatically populated for you.
Base URI where the endpoints are called. Wix eCommerce appends the endpoint path to the base URI. For example, to call the Get Balance endpoint at https://my-gift-cards.com/v1/balance, the base URI you provide here is https://my-gift-cards.com/.
This method requests that a transaction be created by your app. Wix calls this method when a customer completes a purchase that includes a gift card as a payment method at checkout.