Headless Checkout System

Token Configuration

// Include upsellConfig in your checkout token
{
  "orderId": "order_123",
  "customer": { ... },
  "lineItems": [ ... ],
  "upsellConfig": {
    "enabled": true,
    "offers": [
      {
        "id": "upsell-1",
        "productId": "up_shipping",
        "name": "Priority Shipping",
        "description": "Get it in 2-3 days",
        "price": 999,                    // Price in cents
        "compareAtPrice": 1499,          // Optional strikethrough price
        "headline": "Want it faster?",
        "ctaText": "Yes, Upgrade!",
        "declineText": "No thanks",
        "imageUrl": "https://...",       // Optional product image
        "timerSeconds": 300,             // Optional 5-min countdown
        "targeting": {
          "minCartValue": 5000,          // Cart must be $50+
          "productIds": ["prod_1"],      // Must have bought prod_1
          "excludeProductIds": ["sub_1"] // Must NOT have subscription
        }
      }
    ]
  }
}