const response = await fetch('https://klic.in/api/v1/qr', {
  method: 'GET',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY'
  }
});
const data = await response.json();
console.log(data);

import requests

url = "https://klic.in/api/v1/qr"
headers = {"Authorization": "Bearer YOUR_API_KEY"}

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

using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "YOUR_API_KEY");

var response = await client.GetAsync("https://klic.in/api/v1/qr");
string result = await response.Content.ReadAsStringAsync();
Console.WriteLine(result);

<?php
$curl = curl_init();
curl_setopt_array($curl, [
    CURLOPT_URL => 'https://klic.in/api/v1/qr',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ['Authorization: Bearer YOUR_API_KEY']
]);
$response = curl_exec($curl);
curl_close($curl);
echo $response;

package main

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

func main() {
	req, _ := http.NewRequest("GET", "https://klic.in/api/v1/qr", nil)
	req.Header.Set("Authorization", "Bearer YOUR_API_KEY")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}