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Implement the ACP delegated payment flow and SharedPaymentToken (SPT) provisioning. Use when integrating with Stripe for payment tokenization, handling SPT lifecycle, or building the payment completion flow.

Implement ACP intent traces — structured cart abandonment signals with reason codes for analytics and automated recovery workflows. Use when building abandonment tracking, recovery automation, or conversion optimization.

Build product feed generation and submission for ACP. Use when implementing product catalog export, feed formatting (CSV/JSON/XML/TSV), feed validation, and push-based catalog sync to the agent platform.

Implement ACP order lifecycle management and webhook event delivery. Use when building order creation, status tracking, fulfillment updates, post-purchase adjustments, and HMAC-signed webhook emission.

Scaffold an ACP merchant server project — install dependencies, import OpenAPI specs and JSON schemas, configure environment, and create initial endpoint stubs. Use when starting a new ACP implementation from scratch.

Implement ACP payment handlers — pluggable payment method specifications including tokenized cards, seller-backed methods (gift cards, points, store credit), and handler negotiation. Use when adding payment methods or building custom payment handler support.

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 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 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 Payment Processor — the agent that constructs payment authorization messages, requests credentials from the Credentials Provider, processes payments, and returns receipts. Use when implementing the MPP role.

Implement the AP2 Payment Mandate — the VDC shared with payment networks and issuers to signal AI involvement and user authorization. Use when building payment authorization flows, tokenization, and network integration.

Use BigCommerce REST APIs — V2 and V3 endpoints, authentication, rate limiting, pagination, filtering, batch operations, and error handling. Use when integrating with BigCommerce data via REST API.