The Content API for Shopping allows apps to interact directly with the Merchant Center and CSS Center platforms, vastly increasing the efficiency of managing large or complex Merchant Center or CSS Center accounts. Similar to Merchant Center, the Content API for Shopping can be used as an input source for CSS Center.
Using the Content API, CSSs can scale some of the actions already available in CSS Center, such as label management and listing associated Merchant Center accounts.
Learn more about the Content API in the Developer's Guide