diff --git a/src/Authorize.php b/src/Authorize.php
index 040d39a..5efb93f 100644
--- a/src/Authorize.php
+++ b/src/Authorize.php
@@ -10,10 +10,34 @@ class Authorize
 {
     const ROUTE = '/authorize';
 
+    /**
+     * The slim framework application instance.
+     *
+     * @var Slim
+     */
     private $slim;
+
+    /**
+     * The oauth2 server imstance.
+     *
+     * @var OAuth2\Server
+     */
     private $server;
+
+    /**
+     * The template for /authorize
+     *
+     * @var string
+     */
     private $template;
 
+    /**
+     * Construct a new instance of Authorize.
+     *
+     * @param Slim          $slim     The slim framework application instance.
+     * @param OAuth2\Server $server   The oauth2 server imstance.
+     * @param string        $template The template for /authorize
+     */
     public function __construct(Slim $slim, OAuth2\Server $server, $template = 'authorize.phtml')
     {
         $this->slim = $slim;
@@ -21,6 +45,11 @@ public function __construct(Slim $slim, OAuth2\Server $server, $template = 'auth
         $this->template = $template;
     }
 
+    /**
+     * Call this class as a function.
+     *
+     * @return void
+     */
     public function __invoke()
     {
         $request = MessageBridge::newOAuth2Request($this->slim->request());
@@ -46,8 +75,9 @@ public function __invoke()
     /**
      * Register this route with the given Slim application and OAuth2 server
      *
-     * @param Slim          $slim   The slim framework application instance.
-     * @param OAuth2\Server $server The oauth2 server imstance.
+     * @param Slim          $slim     The slim framework application instance.
+     * @param OAuth2\Server $server   The oauth2 server imstance.
+     * @param string        $template The template for /authorize
      *
      * @return void
      */