The Content API for Shopping enables you to programmatically upload product listings and so make your products easily discoverable through Google Shopping.
If you're ready to jump right in, download a client library. For step-by-step instructions see the Getting Started guide.
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Migrate
Get started
Inventory
Reference
Read about migrating from version 1 to version 2.
Quickly get up and running with version 2.
Quickly update product information through the new Inventory service.
Reference docs for accounts, datafeeds, products, and the new inventory service.