Please check below code,I had written in api.php page inside routes folder in laravel 5.6 when I run this route it does not return me auth user id in the controller and it redirect me to home page.I had created login through php artisan make:auth
Route::group(['prefix'=>'User','middleware' => 'auth:api'],function(){
//below route will display all user record from database
Route::get('get','UsersController@getUsers');
});