curl --request GET \
  --url {protocol}://{host}/wp-json/cocart/v2/cart/mini

{
  "cart_hash": "<string>",
  "cart_key": "<string>",
  "currency": "<string>",
  "item_count": 123,
  "items": [
    {
      "item_key": "<string>",
      "id": 123,
      "name": "<string>",
      "variation": [
        "<any>"
      ],
      "price": "<string>",
      "quantity": 123,
      "featured_image": "<string>"
    }
  ],
  "subtotal": "<string>"
}