curl --request GET \
  --url https://api.spirii.com/voucher-groups

import requests

url = "https://api.spirii.com/voucher-groups"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://api.spirii.com/voucher-groups', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.spirii.com/voucher-groups",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.spirii.com/voucher-groups"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.spirii.com/voucher-groups")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.spirii.com/voucher-groups")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

{
  "data": [
    {
      "id": 24,
      "name": "AKB2022",
      "perKwh": 2.5,
      "currency": "DKK",
      "isSpotPriceBased": false,
      "spotPriceMargin": null,
      "spotPriceMarginPct": null,
      "spotPriceMinimum": 0.5,
      "createdAt": "2021-01-07T09:21:43.000Z",
      "updatedAt": "2022-11-07T05:56:18.000Z",
      "voucherCount": 1
    },
    {
      "id": 25,
      "name": "aura2021",
      "perKwh": 2.5,
      "currency": "DKK",
      "isSpotPriceBased": false,
      "spotPriceMargin": null,
      "spotPriceMarginPct": null,
      "spotPriceMinimum": null,
      "createdAt": "2021-04-07T11:41:23.000Z",
      "updatedAt": "2022-11-07T05:56:18.000Z",
      "voucherCount": 1
    }
  ],
  "totalElements": 207,
  "offset": 10,
  "limit": 2
}

{
  "error": {
    "message": "Querystring parameter `id` is not allowed",
    "statusCode": 400,
    "code": "QueryParamNotAllowed"
  }
}

{
  "error": {
    "message": "Something went wroing, try again later",
    "statusCode": 500
  }
}