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UCP — Universal Commerce Protocol

ProtocolSpecification Published specification

Universal Commerce Protocol: an open standard for agents to transact with businesses, from catalog to checkout and orders. Started in retail; lodging and food specs are in development.

Protocol profile

Connects
Shopping agent ↔ merchant
Maturity
Open standard · UCP Tech Council
Distinction
Commerce activities including checkout and order lifecycle.
Specification
Primary source ↗

Documented relationships · 11

← Commerce surface Google AI Mode ShoppingDocumented live integration Documented implementation

Google describes use of UCP for agentic shopping and checkout. · Current

Evidence ↗
← Payment support PayPal / Braintree Agent ReadyDocumented live integration Documented integration

PayPal documents Braintree Google Pay handler path for Google/UCP. · Current

Evidence ↗
← Merchant commerce endpoint Shopify UCP endpointsDocumented live integration Documented implementation

Shopify moved catalog/cart MCP to /api/ucp/mcp. · Current

Evidence ↗
← Native UCP for Agentforce Commerce (announced) Salesforce AgentforceDemonstrated / pilot Documented preview

Salesforce announced native UCP support for Agentforce Commerce; timelines to be confirmed.

Evidence ↗
← Intelligent Commerce Connect accepts UCP (pilot) Visa Intelligent CommerceDemonstrated / pilot Documented preview

Visa Intelligent Commerce Connect (pilot) accepts ACP, UCP and MPP.

Evidence ↗
→ Transport option A2ASpecification

UCP supports agent-to-agent integration patterns. · Current

Evidence ↗
→ Compatible payment authority AP2 — Agent Payments ProtocolSpecification

UCP is designed to work with AP2 mandates. · Current

Evidence ↗
→ Transport option MCPSpecification

UCP integrates via MCP among other routes. · Current

Evidence ↗
← Complementary standards Poppy — Personal Agent ProtocolSpecification

Poppy describes complementarity with commerce interfaces such as UCP. · Draft

Evidence ↗
← Co-developer; UCP Tech Council ShopifyDesign participation Standard stewardship

Shopify co-developed UCP and sits on its Tech Council.

Evidence ↗
← UCP Tech Council member StripeDesign participation

Stripe joined the UCP Tech Council (Apr 2026).

Evidence ↗

Provided by

GoogleCompanyVendor documented
ShopifyCompanyVendor documented