Ap2 Agentic Payments

Implement AP2 as an A2A extension — mandate DataParts in A2A messages, Agent Card AP2 capabilities, payment-specific task flows, and inter-agent payment communication. Use when integrating AP2 payment capabilities into A2A multi-agent systems.

Implement the AP2 Verifiable Digital Credentials (VDC) framework — tamper-evident, cryptographically signed credentials that form the trust foundation for agentic payments. Use when working with the overall VDC architecture, credential issuance, verification, and holder binding.

Build an AP2 Merchant Agent — the seller-side agent that receives intent mandates, searches product catalogs, creates signed cart mandates, and represents the merchant in agentic transactions. Use when implementing the Merchant Endpoint role.

Build an AP2 Shopping Agent — the main orchestrator that handles user requests, creates mandates, coordinates with merchants and credentials providers, and manages the transaction flow. Use when implementing the Shopping Agent role.

Build an AP2 Credentials Provider — the agent that manages payment credentials, provides payment methods to users, handles tokenization (DPAN), and facilitates secure payment between Shopping Agent and Payment Processor. Use when implementing the Credentials Provider role.

Implement AP2 cryptographic signing — hardware-backed user signatures, merchant entity signatures, VDC integrity, key management, and attestation flows. Use when building the signing, verification, and key management components of AP2 mandates.

Implement AP2 dispute resolution and accountability — cryptographic evidence, liability allocation, chargeback handling, and audit trail construction. Use when building dispute handling, fraud investigation, or compliance systems for agentic payments.

Implement the AP2 human-not-present transaction flow — autonomous agent shopping with Intent Mandate authorization, constraint enforcement, and merchant escalation. Use when building autonomous agent purchasing that works after the user has left.