Glossary
Universal Commerce Protocol
Universal Commerce Protocol is defined here as follows. Open commerce protocol so agents, businesses, and payment providers can negotiate checkout and identity linking over REST, MCP, or A2A. The directory source for this term is Universal Commerce Protocol specification. Last verified 2026-10-17.
Last verified 2026-10-17
Sources
Listings
Directory listings whose sources describe this mechanism.
| Name | Status | Category | Open source | Mechanism |
|---|---|---|---|---|
| AP2 | Beta | Payment rails | Yes | Open payment extension for A2A and UCP that records checkout and payment authorization as signed mandates. Public samples exist while FIDO continues the standards work. mandates, cards, stablecoins |
| Universal Commerce Protocol | Live | Protocols | Yes | Open commerce protocol so agents, businesses, and payment providers can negotiate checkout and identity linking over REST, MCP, or A2A. commerce, checkout, discovery |
Questions
- What is Universal Commerce Protocol?
- Open commerce protocol so agents, businesses, and payment providers can negotiate checkout and identity linking over REST, MCP, or A2A.
- Which listings use Universal Commerce Protocol?
- AP2, Universal Commerce Protocol.
- When was Universal Commerce Protocol last verified?
- Last verified 2026-10-17.