Checkout & Cart

Purpose

Design shopping cart and checkout systems: cart management, order lifecycle, discount/promotion engine, tax calculation, shipping integration, and checkout optimization.

Agent Protocol

Trigger

• "shopping cart", "checkout flow", "cart management", "order management"
• "discount engine", "coupon system", "promotion", "tax calculation"
• "checkout optimization", "cart abandonment", "order lifecycle"

Input Context

• E-commerce platform (custom, Shopify, Magento, WooCommerce, composable)
• Cart scope (single-session, persistent, cross-device)
• Order complexity (simple goods, subscriptions, digital, B2B with approvals)
• Tax jurisdictions and shipping carriers