curl --request GET \
  --url https://integracao.sandbox.cardapioweb.com/api/partner/v1/merchant/coupons \
  --header 'X-API-KEY: <api-key>'

{
  "coupons": [
    {
      "name": "<string>",
      "type": "percent_discount",
      "value": 123,
      "id": 123,
      "uid": "<string>",
      "code": null,
      "active": true,
      "minimum_order_value": null,
      "use_limit": null,
      "new_customers_only": false,
      "customer_multi_use": false,
      "availability_start_time": null,
      "availability_end_time": null,
      "available_days": [],
      "available_order_types": [],
      "available_from": null,
      "expires_at": null,
      "item_ids": [
        {
          "id": 123,
          "name": "<string>"
        }
      ]
    }
  ],
  "pagination": {
    "current_page": 123,
    "total_pages": 123,
    "total_coupons": 123
  }
}