The Content API for Shopping will be used for uploading data, and the Search API for Shopping for accessing product data. The Content API can be used to add, delete, query or modify any item individually or with a batch protocol. The Search API is aimed at helping Google Affiliate Network publishers and Google Commerce Search customers.
Both of the new APIs use the Gdata protocol used by many other Google APIs. Those who upload XML or CSV files directly can continue to use the Merchant Center.
The company will no longer support data types such as jobs, real estate, events, and activities, after Google Base is retired in June.
Separately, Microsoft also announced an API change, urging users of its adCenter API to shift to version 7, which was released to production earlier this year. The company says version 6 will sunset this spring.