curl --request GET \
  --url https://api.l2msg.com/whatsapp/instance/fetchInstances \
  --header 'apikey: <api-key>'

import requests

url = "https://api.l2msg.com/whatsapp/instance/fetchInstances"

headers = {"apikey": "<api-key>"}

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

print(response.text)

const options = {method: 'GET', headers: {apikey: '<api-key>'}};

fetch('https://api.l2msg.com/whatsapp/instance/fetchInstances', 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.l2msg.com/whatsapp/instance/fetchInstances",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "apikey: <api-key>"
  ],
]);

$response = curl_exec($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.l2msg.com/whatsapp/instance/fetchInstances"

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

	req.Header.Add("apikey", "<api-key>")

	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.l2msg.com/whatsapp/instance/fetchInstances")
  .header("apikey", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.l2msg.com/whatsapp/instance/fetchInstances")

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

request = Net::HTTP::Get.new(url)
request["apikey"] = '<api-key>'

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

[
  {
    "instance": {
      "instanceName": "example-name",
      "instanceId": "421a4121-a3d9-40cc-a8db-c3a1df353126",
      "owner": "553198296801@s.whatsapp.net",
      "profileName": "Guilherme Gomes",
      "profilePictureUrl": null,
      "profileStatus": "This is the profile status.",
      "status": "open",
      "serverUrl": "https://api.l2msg.com",
      "apikey": "B3844804-481D-47A4-B69C-F14B4206EB56",
      "integration": {
        "integration": "WHATSAPP-BAILEYS",
        "webhook_wa_business": "https://api.l2msg.com/webhook/whatsapp/db5e11d3-ded5-4d91-b3fb-48272688f206"
      }
    }
  },
  {
    "instance": {
      "instanceName": "teste-docs",
      "instanceId": "af6c5b7c-ee27-4f94-9ea8-192393746ddd",
      "status": "close",
      "serverUrl": "https://api.l2msg.com",
      "apikey": "123456",
      "integration": {
        "token": "123456",
        "webhook_wa_business": "https://api.l2msg.com/webhook/whatsapp/teste-docs"
      }
    }
  }
]