Universal Commerce Protocol (UCP)
Open standard for agentic commerce covering discovery, checkout and post-purchase between platforms, agents and businesses.
Reference by Google, developed with Shopify, Etsy, Wayfair, Target and Walmart
IndexedApache-2.0★ 3,444
About
Defines a core shopping service and capability modules (catalog, checkout, orders) that let agents transact with merchants without custom integrations.
Use cases: ecommerce, payments-billing
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About the protocol
- Specification
- ucp.dev/
- Current version
- v2026-08-25github.com
- Maintainer
- Google, developed with Shopify, Etsy, Wayfair, Target and Walmartdevelopers.googleblog.com
- Launched
- 2026-01-11developers.googleblog.com
- Endorsed at launch by more than 20 partners, including Visa, Mastercard, Stripe, Adyen and Best Buy. developers.googleblog.com
Signals
- Stars
- 3,444
- Forks
- 480
- Open issues
- 119
- Last commit
- Oct 23, 2026 (5 days ago)
- Last release
- Aug 25, 2026 (2 months ago)
From GitHub (fetched Oct 24, 2026).
Details
Cite this page
Universal Commerce Protocol (UCP). Agent Mart. https://agentmart.dev/reference/universal-commerce-protocol (last updated 2026-10-24)