curl --request GET \
  --url https://www.firmium.de/api/v1/municipalities/ \
  --cookie sessionid=

import requests

url = "https://www.firmium.de/api/v1/municipalities/"

headers = {"cookie": "sessionid="}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {cookie: 'sessionid='}};

fetch('https://www.firmium.de/api/v1/municipalities/', 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://www.firmium.de/api/v1/municipalities/",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_COOKIE => "sessionid=",
]);

$response = curl_exec($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://www.firmium.de/api/v1/municipalities/"

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

	req.Header.Add("cookie", "sessionid=")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://www.firmium.de/api/v1/municipalities/")
  .header("cookie", "sessionid=")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://www.firmium.de/api/v1/municipalities/")

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

request = Net::HTTP::Get.new(url)
request["cookie"] = 'sessionid='

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

{
  "count": 123,
  "results": [
    {
      "uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "country_code": "<string>",
      "official_code": "<string>",
      "name": "<string>",
      "status": "<string>",
      "status_display": "<string>",
      "company_count": 123,
      "officials": [
        {
          "relationship_type": "shareholder",
          "role": "<string>",
          "first_name": "<string>",
          "last_name": "<string>",
          "full_name": "<string>",
          "person_uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
          "person_url": "<string>",
          "source_label": "<string>",
          "source_as_of": "<string>",
          "source_role": "<string>",
          "work_email": "jsmith@example.com",
          "work_phone": "<string>",
          "start_date": "2023-12-25",
          "source_url": "<string>",
          "verification_status": "unverified"
        }
      ],
      "profile_url": "<string>",
      "budget_url": "<string>",
      "district_code": "<string>",
      "district_name": "<string>",
      "state_code": "<string>",
      "state_name": "<string>",
      "nuts3_code": "<string>",
      "lau_code": "<string>",
      "population": 1073741823,
      "population_as_of": "2023-12-25",
      "reference_date": "2023-12-25"
    }
  ],
  "next": "http://api.example.org/accounts/?page=4",
  "previous": "http://api.example.org/accounts/?page=2"
}