Google adds cart, loyalty features to UCP

Google has updated its Universal Commerce Protocol (UCP) with new capabilities, including a Cart option enabling agents to save or add multiple items to a shopping basket from a single store. Through Identity Linking, shoppers on UCP-integrated platforms can access the same loyalty or member perks as on a retailer's site. Catalog functionality allows agents to retrieve product details such as inventory and pricing in real time. The move follows OpenAI's decision to shift Instant Checkout in ChatGPT to apps.