diff --git a/lib/public/api.php b/lib/public/api.php
index d14e203e79..92de1c5c6f 100644
--- a/lib/public/api.php
+++ b/lib/public/api.php
@@ -37,18 +37,34 @@ namespace OCP;
  */
 class API {
 
+	/**
+	 * API authentication levels
+	 */
+	const GUEST_AUTH = 0;
+	const USER_AUTH = 1;
+	const SUBADMIN_AUTH = 2;
+	const ADMIN_AUTH = 3;
+
+	/**
+	 * API Response Codes
+	 */
+	const RESPOND_UNAUTHORISED = 997;
+	const RESPOND_SERVER_ERROR = 996;
+	const RESPOND_NOT_FOUND = 998;
+	const RESPOND_UNKNOWN_ERROR = 999;
+
 	/**
 	 * registers an api call
 	 * @param string $method the http method
 	 * @param string $url the url to match
 	 * @param callable $action the function to run
 	 * @param string $app the id of the app registering the call
-	 * @param int $authLevel the level of authentication required for the call (See \OC_API constants)
+	 * @param int $authLevel the level of authentication required for the call (See `self::*_AUTH` constants)
 	 * @param array $defaults
 	 * @param array $requirements
 	 * @since 5.0.0
 	 */
-	public static function register($method, $url, $action, $app, $authLevel = \OC_API::USER_AUTH,
+	public static function register($method, $url, $action, $app, $authLevel = self::USER_AUTH,
 		$defaults = array(), $requirements = array()){
 		\OC_API::register($method, $url, $action, $app, $authLevel, $defaults, $requirements);
 	}