How to get Toky agents list

function getTokyAgents()
{
    // create a new cURL resource
    $ch = curl_init();
		$api_key = '[[TOKY_API_KEY]]';
    $headers = array();
    $headers[] = "X-Toky-Key: {$api_key}";
 
    // set URL and other appropriate options
    curl_setopt($ch, CURLOPT_URL, "https://api.toky.co/v1/agents");
    curl_setopt( $ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true);
    
    $curl_response = curl_exec($ch); // Send request
  	curl_close($ch); // close cURL resource 
    
		return json_decode($curl_response,true);
}
    $agents = getTokyAgents();
    $agentsNumber = sizeof($agents);
    print "Loaded $agentsNumber agents: "; var_export($agents);