Create a new cart

import { createClient } from '@spree/sdk'

const client = createClient({
  baseUrl: 'https://your-store.com',
  publishableKey: '<api-key>',
})

// Create an empty cart
const cart = await client.carts.create()

// Create a cart with items
const cartWithItems = await client.carts.create({
  items: [
    { variant_id: 'variant_abc123', quantity: 2 },
  ],
})

{
  "id": "cart_UkLWZg9DAJ",
  "number": "R137499246",
  "token": "uM5hfB6Qg9aRjJPXWNiPvRx4wN3t2kV4SRi",
  "email": null,
  "customer_note": null,
  "currency": "USD",
  "locale": "en",
  "total_quantity": 0,
  "item_total": "0.0",
  "display_item_total": "$0.00",
  "adjustment_total": "0.0",
  "display_adjustment_total": "$0.00",
  "discount_total": "0.0",
  "display_discount_total": "$0.00",
  "tax_total": "0.0",
  "display_tax_total": "$0.00",
  "included_tax_total": "0.0",
  "display_included_tax_total": "$0.00",
  "additional_tax_total": "0.0",
  "display_additional_tax_total": "$0.00",
  "total": "0.0",
  "display_total": "$0.00",
  "gift_card_total": "0.0",
  "display_gift_card_total": "$0.00",
  "amount_due": "0.0",
  "display_amount_due": "$0.00",
  "delivery_total": "0.0",
  "display_delivery_total": "$0.00",
  "warnings": [],
  "created_at": "2026-03-28T11:44:12.580Z",
  "updated_at": "2026-03-28T11:44:12.580Z",
  "store_credit_total": "0.0",
  "display_store_credit_total": "$0.00",
  "covered_by_store_credit": false,
  "current_step": "address",
  "completed_steps": [],
  "requirements": [
    {
      "step": "cart",
      "field": "line_items",
      "message": "Add at least one item to your cart"
    },
    {
      "step": "address",
      "field": "email",
      "message": "Email address is required"
    },
    {
      "step": "address",
      "field": "ship_address",
      "message": "Shipping address is required"
    },
    {
      "step": "delivery",
      "field": "shipping_method",
      "message": "Select a shipping method for all shipments"
    }
  ],
  "shipping_eq_billing_address": true,
  "discounts": [],
  "items": [],
  "fulfillments": [],
  "payments": [],
  "billing_address": null,
  "shipping_address": null,
  "payment_methods": [],
  "gift_card": null
}