ap2-cart-mandate

An AP2 Cart Mandate is a Verifiable Digital Credential that securely binds user authorization to merchant-signed product offers and user-signed confirmation. It is needed for human-present checkout flows in agentic commerce to ensure verifiable transaction consent.

You create and sign a cart mandate by providing merchant-signed product offers and user intent to the AP2 Cart Mandate process. It constructs the mandate, facilitates user review, and captures the user signature for explicit consent.

The AP2 Cart Mandate protocol operates independently without external dependencies. It relies solely on the AP2 protocol specification to handle cart creation, signing, and verification processes for secure transaction binding.

A standard checkout process lacks cryptographic verification of transaction details. The AP2 Cart Mandate approach uses a Verifiable Digital Credential to bind merchant-signed offers and user signatures, ensuring tamper-proof transaction binding for agentic commerce.

Using a Verifiable Digital Credential for cart authorization is limited strictly to binding user authorization to merchant-signed product offers. It operates within the AP2 protocol specification and does not handle payment processing or external checkout routing.