curl --request GET \
  --url https://api.example.com/admin/api/channels \
  --cookie gproxy_session=

import requests

url = "https://api.example.com/admin/api/channels"

headers = {"cookie": "gproxy_session="}

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

print(response.text)

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

fetch('https://api.example.com/admin/api/channels', 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.example.com/admin/api/channels",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_COOKIE => "gproxy_session=",
]);

$response = curl_exec($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.example.com/admin/api/channels"

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

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

	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.example.com/admin/api/channels")
  .header("cookie", "gproxy_session=")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/admin/api/channels")

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

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

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

[
  {
    "capabilities": {
      "paidUsage": true,
      "quotaQuery": true,
      "quotaReset": true,
      "refresh": true,
      "services": true,
      "websocket": true
    },
    "configKeys": [
      {
        "description": "<string>",
        "kind": "string",
        "name": "<string>",
        "placeholder": "<string>",
        "required": true
      }
    ],
    "credentialKinds": [
      "<string>"
    ],
    "displayName": "<string>",
    "id": "<string>",
    "loginModes": [
      "authorization_code"
    ]
  }
]

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}