PteroTheme/routes/api-remote.php

<?php
/**
 * Pterodactyl - Panel
 * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
 *
 * This software is licensed under the terms of the MIT license.
 * https://opensource.org/licenses/MIT
 */
Route::get('/authenticate/{token}', 'ValidateKeyController@index')->name('post.api.remote.authenticate');