POST
/
v1
/
carts
/
:id
/
checkout
curl --location --request POST 'https://api.stateset.com/v1/carts/cart_0901f083-aa1c-43c5-af5c-0a9d2fc64e30/checkout' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer YOUR_API_KEY' \
--data-raw '{
    "payment_method": {
        "type": "card",
        "payment_method_id": "pm_saved_123"
    },
    "billing_address": {
        "line1": "123 Main St",
        "city": "San Francisco",
        "state": "CA",
        "postal_code": "94105",
        "country": "US"
    },
    "shipping_method_id": "ship_standard",
    "customer_note": "Please leave at front door"
}'

{
  "id": "order_123456",
  "object": "order",
  "cart_id": "cart_0901f083-aa1c-43c5-af5c-0a9d2fc64e30",
  "order_number": "ORD-2024-123456",
  "customer_id": "cust_abc123",
  "status": "processing",
  "payment_status": "paid",
  "fulfillment_status": "unfulfilled",
  "items": [
    {
      "id": "oi_abc123",
      "product_id": "prod_123",
      "variant_id": "var_blue_large",
      "product_name": "Wireless Headphones",
      "variant_name": "Blue - Large",
      "sku": "WH-BL-L",
      "quantity": 3,
      "unit_price": 9999,
      "discount_amount": 2999,
      "subtotal": 26997
    },
    {
      "id": "oi_def456",
      "product_id": "prod_789",
      "variant_id": "var_red_medium",
      "product_name": "T-Shirt",
      "variant_name": "Red - Medium",
      "sku": "TS-RD-M",
      "quantity": 1,
      "unit_price": 2499,
      "discount_amount": 250,
      "subtotal": 2249
    }
  ],
  "subtotal": 32496,
  "discount_amount": 3249,
  "tax_amount": 2268,
  "shipping_amount": 599,
  "total": 32114,
  "currency": "USD",
  "payment": {
    "id": "pay_xyz789",
    "method": "card",
    "last4": "4242",
    "brand": "visa",
    "status": "succeeded",
    "amount": 32114
  },
  "shipping_address": {
    "line1": "123 Main St",
    "city": "San Francisco",
    "state": "CA",
    "postal_code": "94105",
    "country": "US"
  },
  "shipping_method": {
    "id": "ship_standard",
    "name": "Standard Shipping",
    "amount": 599,
    "estimated_delivery": "2024-06-25"
  },
  "customer_note": "Please leave at front door",
  "created_at": "2024-06-20T17:00:00Z",
  "updated_at": "2024-06-20T17:00:00Z",
  "metadata": {
    "source": "web_checkout"
  }
}
This endpoint initiates the checkout process, converting a cart into an order. It validates inventory, calculates final totals, and processes payment.

​
Authentication

This endpoint requires a valid API key with carts:write and orders:write permissions. 
Authorization: Bearer YOUR_API_KEY

​
Path Parameters

​
id
string
required
The unique identifier of the cart to checkout

​
Request Body

​
payment_method
object
required
Payment method details
​
billing_address
object
required
Billing address
​
shipping_address
object
Shipping address (uses billing if not provided)
​
shipping_method_id
string
required
Selected shipping method ID
​
customer_note
string
Special instructions for the order
​
po_number
string
Purchase order number (for B2B)
​
metadata
object
Additional order metadata

​
Response

Returns the created order object. 
curl --location --request POST 'https://api.stateset.com/v1/carts/cart_0901f083-aa1c-43c5-af5c-0a9d2fc64e30/checkout' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer YOUR_API_KEY' \
--data-raw '{
    "payment_method": {
        "type": "card",
        "payment_method_id": "pm_saved_123"
    },
    "billing_address": {
        "line1": "123 Main St",
        "city": "San Francisco",
        "state": "CA",
        "postal_code": "94105",
        "country": "US"
    },
    "shipping_method_id": "ship_standard",
    "customer_note": "Please leave at front door"
}'

{
  "id": "order_123456",
  "object": "order",
  "cart_id": "cart_0901f083-aa1c-43c5-af5c-0a9d2fc64e30",
  "order_number": "ORD-2024-123456",
  "customer_id": "cust_abc123",
  "status": "processing",
  "payment_status": "paid",
  "fulfillment_status": "unfulfilled",
  "items": [
    {
      "id": "oi_abc123",
      "product_id": "prod_123",
      "variant_id": "var_blue_large",
      "product_name": "Wireless Headphones",
      "variant_name": "Blue - Large",
      "sku": "WH-BL-L",
      "quantity": 3,
      "unit_price": 9999,
      "discount_amount": 2999,
      "subtotal": 26997
    },
    {
      "id": "oi_def456",
      "product_id": "prod_789",
      "variant_id": "var_red_medium",
      "product_name": "T-Shirt",
      "variant_name": "Red - Medium",
      "sku": "TS-RD-M",
      "quantity": 1,
      "unit_price": 2499,
      "discount_amount": 250,
      "subtotal": 2249
    }
  ],
  "subtotal": 32496,
  "discount_amount": 3249,
  "tax_amount": 2268,
  "shipping_amount": 599,
  "total": 32114,
  "currency": "USD",
  "payment": {
    "id": "pay_xyz789",
    "method": "card",
    "last4": "4242",
    "brand": "visa",
    "status": "succeeded",
    "amount": 32114
  },
  "shipping_address": {
    "line1": "123 Main St",
    "city": "San Francisco",
    "state": "CA",
    "postal_code": "94105",
    "country": "US"
  },
  "shipping_method": {
    "id": "ship_standard",
    "name": "Standard Shipping",
    "amount": 599,
    "estimated_delivery": "2024-06-25"
  },
  "customer_note": "Please leave at front door",
  "created_at": "2024-06-20T17:00:00Z",
  "updated_at": "2024-06-20T17:00:00Z",
  "metadata": {
    "source": "web_checkout"
  }
}