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Implement AP2 challenge and step-up flows — 3DS2, OTP verification, redirect challenges, and trusted surface interactions. Use when building additional authentication steps during agentic payment processing.
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 MCP servers — payment tools exposed via Model Context Protocol for agent access to payment capabilities. Use when building MCP-based payment tool integrations for AP2.
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.
Implement the AP2 human-present transaction flow — the checkout process where the user is actively present to confirm cart details and payment method selection. The primary VDC in this flow is the Cart Mandate. Use when building interactive agentic checkout with user in the loop.
Implement the AP2 risk signals framework — novel risk considerations for agentic payments, risk payload construction, trust establishment, and fraud assessment. Use when building risk evaluation, fraud detection, or trust scoring for AP2 transactions.
Implement the AP2 Intent Mandate — the human-not-present VDC that pre-authorizes agent purchases within defined constraints. Use when building autonomous agent shopping with user-signed intent, TTL, and constraint enforcement.
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.
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