UCP

unverified

Universal Commerce Protocol (UCP)

by Google· launched 2026-01verified 2026-09-23

Unverified draft

This entry has been seeded but not yet verified against primary sources. Its details are intentionally incomplete and it is excluded from the machine-readable structured-data claims until verified.

At a glance

Layer: communication
Category: framework
Rails: —
Settlement: Delegates payment to pluggable payment handlers (Google Pay, Shop Pay, card processors); UCP standardizes the commerce session, not settlement.
Reversible: —
Human in loop: optional
D2C fit: strong
B2B fit: moderate
Spec: https://github.com/Universal-Commerce-Protocol

An open-source standard from Google for agentic commerce across the full shopping journey — discovery, cart, checkout, and post-purchase support. Co-developed with Shopify, Etsy, Wayfair, Target, and Walmart, and endorsed by 20+ ecosystem partners including Adyen, Mastercard, Stripe, and Visa. Compatible with A2A, AP2, and MCP. Powers checkout on Google AI Mode in Search and Gemini. Live since January 2026; expanded globally with cart, catalog, and identity-linking capabilities.

How it works

Not yet written — pending verification.

Deployments using UCP

No deployments recorded yet.

Sources

No sources yet — this entry is an unverified draft.