Google launches Universal Commerce Protocol at National Retail Federation
Open-source standard covering the full shopping journey co-launched with Shopify, Walmart, Target, and Etsy, endorsed by 20+ partners including Mastercard, Visa, and Stripe.
The Universal Commerce Protocol (UCP) is the first open standard scoped to the full shopping journey rather than a single leg, layering on top of A2A (2025-w15-standards-google-a2a) for inter-agent transport and AP2 (2025-w38-standards-google-ap2-protocol) for payments. The Shopify, Walmart, Target, and Etsy co-launch covers four of the largest US merchant ecosystems; Mastercard, Visa, and Stripe inclusion places UCP across all major payment rails. UCP later expands with multi-item carts, Identity Linking, and BNPL (2026-w21-standards-google-ucp-gml) and brings on Amazon, Meta, Microsoft, Salesforce, and Stripe to its Tech Council (2026-w17-standards-ucp-tech-council-expansion). The Universal Cart launch at I/O 2026 (2026-w21-aeo-google-universal-cart) is the first consumer surface built on UCP, and Ulta Beauty (2026-w17-pilots-ulta-beauty-google-gemini-checkout) is the first retailer to ship UCP checkout.