For example, suppose you develop an application (an eCommerce or a SaaS platform) integrated with Square to process payments. Other Square sellers sign up to use your application.
In this scenario, the application developer can use the Merchants API to retrieve seller account information, such as language, business name, country, and account status as shown in the following RetrieveMerchant request. In the request, the Authorization header provides an OAuth access token that identifies the seller whose account information is requested.