diff --git a/src/Api/Actions/Activity/IndexAction.php b/src/Api/Actions/Activity/IndexAction.php
index 52bf7354e..0daf5d104 100644
--- a/src/Api/Actions/Activity/IndexAction.php
+++ b/src/Api/Actions/Activity/IndexAction.php
@@ -19,17 +19,12 @@ class IndexAction extends SerializeCollectionAction
     protected $activity;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\ActivitySerializer';
 
     /**
-     * The relationships that are available to be included, and which ones are
-     * included by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $include = [
         'subject' => true,
@@ -38,12 +33,30 @@ class IndexAction extends SerializeCollectionAction
     ];
 
     /**
-     * The relations that are linked by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $link = ['user'];
 
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Discussions/CreateAction.php b/src/Api/Actions/Discussions/CreateAction.php
index 36b1815ec..b69f7c9b0 100644
--- a/src/Api/Actions/Discussions/CreateAction.php
+++ b/src/Api/Actions/Discussions/CreateAction.php
@@ -24,17 +24,12 @@ class CreateAction extends BaseCreateAction
     protected $forum;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\DiscussionSerializer';
 
     /**
-     * The relationships that are available to be included, and which ones are
-     * included by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $include = [
         'posts' => true,
@@ -44,6 +39,31 @@ class CreateAction extends BaseCreateAction
         'lastPost' => true
     ];
 
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Discussions/IndexAction.php b/src/Api/Actions/Discussions/IndexAction.php
index 77f6ce578..68dc70241 100644
--- a/src/Api/Actions/Discussions/IndexAction.php
+++ b/src/Api/Actions/Discussions/IndexAction.php
@@ -24,17 +24,12 @@ class IndexAction extends SerializeCollectionAction
     protected $url;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\DiscussionSerializer';
 
     /**
-     * The relationships that are available to be included, and which ones are
-     * included by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $include = [
         'startUser' => true,
@@ -47,12 +42,30 @@ class IndexAction extends SerializeCollectionAction
     ];
 
     /**
-     * The fields that are available to be sorted by.
-     *
-     * @var array
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
      */
     public static $sortFields = ['lastTime', 'commentsCount', 'startTime'];
 
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Discussions/ShowAction.php b/src/Api/Actions/Discussions/ShowAction.php
index 06e6f1dbf..d1e4704a5 100644
--- a/src/Api/Actions/Discussions/ShowAction.php
+++ b/src/Api/Actions/Discussions/ShowAction.php
@@ -22,17 +22,12 @@ class ShowAction extends SerializeResourceAction
     protected $posts;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\DiscussionSerializer';
 
     /**
-     * The relationships that are available to be included, and which ones are
-     * included by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $include = [
         'startUser' => false,
@@ -47,23 +42,27 @@ class ShowAction extends SerializeResourceAction
     ];
 
     /**
-     * The relations that are linked by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $link = ['posts', 'posts.discussion'];
 
     /**
-     * The fields that are available to be sorted by.
-     *
-     * @var array
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
      */
     public static $sortFields = ['time'];
 
     /**
-     * The default sort field and order to user.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $sort = ['time' => 'asc'];
 
diff --git a/src/Api/Actions/Discussions/UpdateAction.php b/src/Api/Actions/Discussions/UpdateAction.php
index e47b87ad4..c98745ae4 100644
--- a/src/Api/Actions/Discussions/UpdateAction.php
+++ b/src/Api/Actions/Discussions/UpdateAction.php
@@ -15,22 +15,43 @@ class UpdateAction extends SerializeResourceAction
     protected $bus;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\DiscussionSerializer';
 
     /**
-     * The relations that are included by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $include = [
         'addedPosts' => true,
         'addedPosts.user' => true
     ];
 
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Forum/ShowAction.php b/src/Api/Actions/Forum/ShowAction.php
index be92a6c5f..5875e54c6 100644
--- a/src/Api/Actions/Forum/ShowAction.php
+++ b/src/Api/Actions/Forum/ShowAction.php
@@ -7,12 +7,40 @@ use Tobscure\JsonApi\Document;
 class ShowAction extends SerializeResourceAction
 {
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\ForumSerializer';
 
+    /**
+     * @inheritdoc
+     */
+    public static $include = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Get the forum, ready to be serialized and assigned to the JsonApi
      * response.
diff --git a/src/Api/Actions/Groups/IndexAction.php b/src/Api/Actions/Groups/IndexAction.php
index 445e9d79f..a614dbd71 100644
--- a/src/Api/Actions/Groups/IndexAction.php
+++ b/src/Api/Actions/Groups/IndexAction.php
@@ -8,12 +8,40 @@ use Tobscure\JsonApi\Document;
 class IndexAction extends SerializeCollectionAction
 {
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\GroupSerializer';
 
+    /**
+     * @inheritdoc
+     */
+    public static $include = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Get the groups, ready to be serialized and assigned to the document
      * response.
diff --git a/src/Api/Actions/Notifications/IndexAction.php b/src/Api/Actions/Notifications/IndexAction.php
index 5197bb7fa..0ea41ff92 100644
--- a/src/Api/Actions/Notifications/IndexAction.php
+++ b/src/Api/Actions/Notifications/IndexAction.php
@@ -14,16 +14,12 @@ class IndexAction extends SerializeCollectionAction
     protected $notifications;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\NotificationSerializer';
 
     /**
-     * The relations that are included by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $include = [
         'sender' => true,
@@ -32,19 +28,30 @@ class IndexAction extends SerializeCollectionAction
     ];
 
     /**
-     * The maximum number of records that can be requested.
-     *
-     * @var integer
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
      */
     public static $limitMax = 50;
 
     /**
-     * The number of records included by default.
-     *
-     * @var integer
+     * @inheritdoc
      */
     public static $limit = 10;
 
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Notifications/UpdateAction.php b/src/Api/Actions/Notifications/UpdateAction.php
index bd86a70b1..def34a0e3 100644
--- a/src/Api/Actions/Notifications/UpdateAction.php
+++ b/src/Api/Actions/Notifications/UpdateAction.php
@@ -14,12 +14,40 @@ class UpdateAction extends SerializeResourceAction
     protected $bus;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\NotificationSerializer';
 
+    /**
+     * @inheritdoc
+     */
+    public static $include = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Posts/CreateAction.php b/src/Api/Actions/Posts/CreateAction.php
index 78b7094bc..76eccc373 100644
--- a/src/Api/Actions/Posts/CreateAction.php
+++ b/src/Api/Actions/Posts/CreateAction.php
@@ -14,16 +14,42 @@ class CreateAction extends BaseCreateAction
     protected $bus;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\PostSerializer';
 
+    /**
+     * @inheritdoc
+     */
     public static $include = [
         'user' => true
     ];
 
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Posts/IndexAction.php b/src/Api/Actions/Posts/IndexAction.php
index 7bea440e9..a99813197 100644
--- a/src/Api/Actions/Posts/IndexAction.php
+++ b/src/Api/Actions/Posts/IndexAction.php
@@ -15,17 +15,12 @@ class IndexAction extends SerializeCollectionAction
     protected $posts;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\PostSerializer';
 
     /**
-     * The relationships that are available to be included, and which ones are
-     * included by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $include = [
         'user' => true,
@@ -35,6 +30,31 @@ class IndexAction extends SerializeCollectionAction
         'discussion' => true
     ];
 
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Posts/ShowAction.php b/src/Api/Actions/Posts/ShowAction.php
index 104af500e..0e6c560f8 100644
--- a/src/Api/Actions/Posts/ShowAction.php
+++ b/src/Api/Actions/Posts/ShowAction.php
@@ -14,17 +14,12 @@ class ShowAction extends SerializeResourceAction
     protected $posts;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\PostSerializer';
 
     /**
-     * The relationships that are available to be included, and which ones are
-     * included by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $include = [
         'user' => true,
@@ -34,6 +29,31 @@ class ShowAction extends SerializeResourceAction
         'discussion' => false
     ];
 
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Posts/UpdateAction.php b/src/Api/Actions/Posts/UpdateAction.php
index 9df3d5b20..99f8ebdb1 100644
--- a/src/Api/Actions/Posts/UpdateAction.php
+++ b/src/Api/Actions/Posts/UpdateAction.php
@@ -14,12 +14,40 @@ class UpdateAction extends SerializeResourceAction
     protected $bus;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\PostSerializer';
 
+    /**
+     * @inheritdoc
+     */
+    public static $include = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Users/CreateAction.php b/src/Api/Actions/Users/CreateAction.php
index 8682aabcc..fc3e48170 100644
--- a/src/Api/Actions/Users/CreateAction.php
+++ b/src/Api/Actions/Users/CreateAction.php
@@ -23,12 +23,40 @@ class CreateAction extends BaseCreateAction
     protected $forum;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\UserSerializer';
 
+    /**
+     * @inheritdoc
+     */
+    public static $include = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Users/DeleteAvatarAction.php b/src/Api/Actions/Users/DeleteAvatarAction.php
index 69f48eda4..0529ba1f8 100644
--- a/src/Api/Actions/Users/DeleteAvatarAction.php
+++ b/src/Api/Actions/Users/DeleteAvatarAction.php
@@ -14,9 +14,7 @@ class DeleteAvatarAction extends SerializeResourceAction
     protected $bus;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\UserSerializer';
 
diff --git a/src/Api/Actions/Users/IndexAction.php b/src/Api/Actions/Users/IndexAction.php
index fab722ceb..8626978f3 100644
--- a/src/Api/Actions/Users/IndexAction.php
+++ b/src/Api/Actions/Users/IndexAction.php
@@ -23,6 +23,43 @@ class IndexAction extends SerializeCollectionAction
      */
     protected $url;
 
+    /**
+     * @inheritdoc
+     */
+    public static $serializer = 'Flarum\Api\Serializers\UserSerializer';
+
+    /**
+     * @inheritdoc
+     */
+    public static $include = [
+        'groups' => true
+    ];
+
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = ['username', 'postsCount', 'discussionsCount', 'lastSeenTime', 'joinTime'];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
@@ -35,30 +72,6 @@ class IndexAction extends SerializeCollectionAction
         $this->url = $url;
     }
 
-    /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
-     */
-    public static $serializer = 'Flarum\Api\Serializers\UserSerializer';
-
-    /**
-     * The relationships that are available to be included, and which ones are
-     * included by default.
-     *
-     * @var array
-     */
-    public static $include = [
-        'groups' => true
-    ];
-
-    /**
-     * The fields that are available to be sorted by.
-     *
-     * @var array
-     */
-    public static $sortFields = ['username', 'postsCount', 'discussionsCount', 'lastSeenTime', 'joinTime'];
-
     /**
      * Get the user results, ready to be serialized and assigned to the
      * document response.
@@ -77,15 +90,11 @@ class IndexAction extends SerializeCollectionAction
 
         $results = $this->searcher->search($criteria, $request->limit, $request->offset, $request->include);
 
-        if (($total = $results->getTotal()) !== null) {
-            $document->addMeta('total', $total);
-        }
-
         static::addPaginationLinks(
             $document,
             $request,
             $this->url->toRoute('flarum.api.users.index'),
-            $total ?: $results->areMoreResults()
+            $results->areMoreResults()
         );
 
         return $results->getUsers();
diff --git a/src/Api/Actions/Users/ShowAction.php b/src/Api/Actions/Users/ShowAction.php
index 79a14ce6d..931bc6210 100644
--- a/src/Api/Actions/Users/ShowAction.php
+++ b/src/Api/Actions/Users/ShowAction.php
@@ -13,24 +13,42 @@ class ShowAction extends SerializeResourceAction
     protected $users;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\CurrentUserSerializer';
 
     /**
-     * The relationships that are available to be included, and which ones are
-     * included by default.
-     *
-     * @var array
+     * @inheritdoc
      */
     public static $include = [
         'groups' => true
     ];
 
+    /**
+     * @inheritdoc
+     */
     public static $link = [];
 
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Users/UpdateAction.php b/src/Api/Actions/Users/UpdateAction.php
index 4e7b0911a..64e732bdc 100644
--- a/src/Api/Actions/Users/UpdateAction.php
+++ b/src/Api/Actions/Users/UpdateAction.php
@@ -14,12 +14,40 @@ class UpdateAction extends SerializeResourceAction
     protected $bus;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\UserSerializer';
 
+    /**
+     * @inheritdoc
+     */
+    public static $include = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *
diff --git a/src/Api/Actions/Users/UploadAvatarAction.php b/src/Api/Actions/Users/UploadAvatarAction.php
index e17ba8faa..ebf3b66f8 100644
--- a/src/Api/Actions/Users/UploadAvatarAction.php
+++ b/src/Api/Actions/Users/UploadAvatarAction.php
@@ -14,12 +14,40 @@ class UploadAvatarAction extends SerializeResourceAction
     protected $bus;
 
     /**
-     * The name of the serializer class to output results with.
-     *
-     * @var string
+     * @inheritdoc
      */
     public static $serializer = 'Flarum\Api\Serializers\UserSerializer';
 
+    /**
+     * @inheritdoc
+     */
+    public static $include = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $link = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $limitMax = 50;
+
+    /**
+     * @inheritdoc
+     */
+    public static $limit = 20;
+
+    /**
+     * @inheritdoc
+     */
+    public static $sortFields = [];
+
+    /**
+     * @inheritdoc
+     */
+    public static $sort;
+
     /**
      * Instantiate the action.
      *