Google updated the Universal Commerce Protocol with new Cart and Catalog capabilities, highlighted Identity Linking as an available option, and announced a simpler onboarding process through Merchant Center.
The update is UCP’s first since Google launched the protocol at NRF in January. Cart and Catalog are published as draft specifications. Identity Linking is in the latest stable version of the spec.
What The New Capabilities Do
The additions expand what AI agents can do within UCP-powered shopping experiences.
Cart lets agents save or add…

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