# UltracartClient::CheckoutSetupBrowserKeyResponse ## Properties | Name | Type | Description | Notes | | ---- | ---- | ----------- | ----- | | **browser_key** | **String** | Browser key that is used to authenticate against the new linked application. | [optional] | ## Example ```ruby require 'ultracart_api' instance = UltracartClient::CheckoutSetupBrowserKeyResponse.new( browser_key: null ) ```