@Api\Access 

Restricting access to your endpoint 

The @Api\Access() annotation can be used to restrict the access to an endpoint to certain ...

• Frontend-Users (fe_users)
• Frontend-User-Groups (fe_user_groups)
• Api-Users (defined in the Extension Manager)
• Backend-Users or Admins
• IP-adresses

The basic syntax is:

@Api\Access("options")

Full example:

<?php

namespace My\Extension\Api;

use Nng\Nnrestapi\Annotations as Api;
use Nng\Nnrestapi\Api\AbstractApi;

/**
 * @Api\Endpoint()
 */
class Example extends AbstractApi
{
   /**
    * Only Frontend-Users will be able to access this endpoint
    *
    * @Api\Access("fe_users")
    * @return array
    */
   public function getIndexAction() 
   {
      return ['nice'=>'works!'];
   }
}

Examples and details? 

Pleaser check out the section "how to restrict access" for detailed information and examples.