Configure Application Settings per Website
In this section, you can configure the storefront Web API feature availability for the storefront for the particular website. By default, the API feature is disabled.
Navigate to System > Websites in the main menu.
For the necessary website, hover over the More Options menu to the right and click to start editing the configuration.
Select System Configuration > General Setup > Application Settings in the menu to the left.
For faster navigation between the configuration menu sections, use Quick Search.
Clear the Use Organization check box to change the organization-wide setting.
In the Web API section, select whether to enable or disable the storefront API feature for your application by setting the Enable Storefront API option.
Click Save Settings.