CheckoutSessionCreateRequest

{
    "mode": "payment",
    "ui_mode": "custom",
    "amount": 99.99,
    "currency": "USD",
    "merchant_order_id": "order_abc123xyz456",
    "customer_id": "string",
    "customer": {
        "id": "cus_9Z8Y7X6W5V4U3T",
        "email": "customer@example.com",
        "phone": "+1234567890",
        "name": "John Doe",
        "merchant_customer_id": "cust_merchant_123456"
    },
    "line_items": [
        {
            "quantity": 1,
            "price_data": {
                "product_data": {
                    "name": "Premium Monthly Plan",
                    "desc": "Unlimited access to all premium features"
                },
                "unit_amount": 99.99,
                "recurring": {
                    "interval": "day",
                    "unit_amount": "string",
                    "interval_count": 1,
                    "total_billing_cycles": 12
                }
            }
        }
    ],
    "payment_method_types": [
        "card",
        "apple_pay",
        "google_pay"
    ],
    "subscription_data": {
        "discount_period_config": {
            "discount_period_count": 1,
            "discount_period_amount": 0.01
        }
    },
    "collection_method": "auto_charge",
    "metadata": {
        "order_type": "online",
        "source": "web",
        "campaign": "summer_sale"
    },
    "shipping": {
        "name": "John Doe",
        "phone": "+1234567890",
        "address": {
            "line1": "123 Main Street",
            "line2": "Apartment 4B",
            "city": "New York",
            "state": "NY",
            "postcode": "10001",
            "country": "US"
        }
    },
    "billing": {
        "address": {
            "line1": "123 Main Street",
            "line2": "Apartment 4B",
            "city": "New York",
            "state": "NY",
            "postcode": "10001",
            "country": "US"
        },
        "date_of_birth": "string",
        "first_name": "string",
        "last_name": "string",
        "email": "string",
        "phone": "string"
    }
}