import { createAdminClient } from '@spree/admin-sdk'

const client = createAdminClient({
  baseUrl: 'https://your-store.com',
  secretKey: 'sk_xxx',
})

const item = await client.orders.items.update('or_UkLWZg9DAJ', 'li_UkLWZg9DAJ', {
  quantity: 5,
})

spree api patch /orders/{order_id}/items/{id} -d '{"quantity":5}'

{
  "id": "li_UkLWZg9DAJ",
  "variant_id": "variant_gbHJdmfrXB",
  "seller_id": null,
  "preorder": false,
  "preorder_ships_at": null,
  "quantity": 5,
  "currency": "USD",
  "name": "Product 819758",
  "slug": "product-819758",
  "options_text": "Size: S",
  "price": "19.99",
  "total": "99.95",
  "adjustment_total": "0.00",
  "additional_tax_total": "0.00",
  "included_tax_total": "0.00",
  "discount_total": "0.00",
  "pre_tax_amount": "99.95",
  "discounted_amount": "99.95",
  "compare_at_amount": null,
  "thumbnail_url": null,
  "option_values": [
    {
      "id": "optval_UkLWZg9DAJ",
      "option_type_id": "opt_UkLWZg9DAJ",
      "name": "size-17",
      "label": "S",
      "position": 1,
      "color_code": null,
      "option_type_name": "foo-size-27",
      "option_type_label": "Size",
      "image_url": null,
      "metadata": {},
      "created_at": "2026-01-15T12:00:00.000Z",
      "updated_at": "2026-01-15T12:00:00.000Z"
    }
  ],
  "digital_links": [],
  "external_references": {},
  "metadata": {},
  "price_source": null,
  "created_at": "2026-01-15T12:00:00.000Z",
  "updated_at": "2026-01-15T12:00:00.000Z",
  "catalog_price": "19.99",
  "price_list_id": null,
  "price_list_name": null,
  "catalog_id": null,
  "catalog_name": null,
  "cost_price": "17.00",
  "tax_category_id": "taxcat_UkLWZg9DAJ"
}