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Payment Authentication

stable

Step-up authentication for payment, including 3DS challenge and device-data-collection actions. Lets an agent hand a buyer through a challenge without abandoning the flow.

dev.ucp.common.payment.authentication governed by ucp.dev ✓ Authority-bound

1

Verified Stores

Payment

Category

Stable

Spec Status

DomainStatus

devucp.netsgroup.com ✓Verified

Explore Protocol Data

Verticals retail, lodging, travel & food by industry Vendors capabilities & extensions by namespace authority Tools what MCP operations agents can invoke Transports how stores expose their APIs Payment Handlers which payment methods are accepted Spec Versions which protocol versions are in use