curl --request GET \
  --url https://secureapi.tender.cash/v1/api/webhook \
  --header 'authorization: <api-key>' \
  --header 'x-access-id: <x-access-id>' \
  --header 'x-request-id: <x-request-id>' \
  --header 'x-timestamp: <x-timestamp>'

const options = {
  method: 'GET',
  headers: {
    authorization: '<api-key>',
    'x-timestamp': '<x-timestamp>',
    'x-request-id': '<x-request-id>',
    'x-access-id': '<x-access-id>'
  }
};

fetch('https://secureapi.tender.cash/v1/api/webhook', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://secureapi.tender.cash/v1/api/webhook"

headers = {
    "authorization": "<api-key>",
    "x-timestamp": "<x-timestamp>",
    "x-request-id": "<x-request-id>",
    "x-access-id": "<x-access-id>"
}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://secureapi.tender.cash/v1/api/webhook",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "authorization: <api-key>",
    "x-access-id: <x-access-id>",
    "x-request-id: <x-request-id>",
    "x-timestamp: <x-timestamp>"
  ],
]);

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

curl_close($curl);

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