Google’s UCP Update: Carts, Catalogs, And Loyalty In AI Shopping via @Sejournal, @Slobodanmanic

Why It Matters

The enhancements make AI‑driven shopping viable at scale, allowing retailers to protect loyalty programs and reduce integration costs, while positioning Google as a direct competitor to ACP in the emerging agentic commerce market.

Key Takeaways

• UCP now supports multi‑item carts for AI agents
• Live catalog queries deliver real‑time inventory and pricing
• Identity Linking preserves loyalty discounts and free shipping
• Merchant Center onboarding lets retailers enable UCP without code
• Stripe and Salesforce will bridge UCP and ACP across platforms

Pulse Analysis

The rise of agentic commerce has turned AI assistants into active shoppers, but early protocols fell short of retail realities. Google’s initial UCP rollout in January 2026 offered only single‑item checkout, limiting its usefulness for complex purchase journeys. By introducing Cart, Catalog, and Identity Linking, Google addresses the core primitives—basket management, live inventory access, and loyalty integration—that merchants demand. These capabilities align UCP with the functional baseline set by OpenAI’s ACP, which launched with full cart and catalog support in late 2025.

The most consequential shift is Google’s simplified onboarding via Merchant Center. Retailers accustomed to managing product feeds can now activate UCP with a settings toggle, eliminating the need for custom engineering. The `native_commerce` attribute automatically surfaces a checkout button in Google AI Mode and the Gemini app, turning existing Google Shopping participants into AI‑ready merchants overnight. This low‑code approach lowers the barrier for millions of small and midsize businesses, expanding the potential addressable market far beyond the flagship brands that endorsed UCP at the NRF conference.

Strategically, the update pits Google directly against ACP while carving out a unique advantage: Identity Linking. No other protocol currently lets shoppers retain membership pricing, discounts, or free‑shipping perks when purchasing through an AI agent. With Stripe and Salesforce committing to support both UCP and ACP, the ecosystem is converging on a shared payment and commerce layer, giving retailers flexibility to serve multiple AI front‑ends without duplicate integrations. As AI agents become ubiquitous shopping assistants, the retailers that adopt UCP early will safeguard loyalty revenue and tap into a new, high‑intent sales channel.