diff --git a/composer.json b/composer.json
index 8316d52..645d93c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "mcnd/lean",
-    "description": "A more-than-micro framework for basic apps",
+    "description": "A micro framework for rapid application development (RAD)",
     "type": "library",
     "license": "MIT",
     "authors": [
@@ -134,5 +134,29 @@
         "post-update-cmd": [
             "Lean\\Composer::postUpdate"
         ]
+    },
+    "extra" : {
+        "lean" : {
+            "autoload": {
+                "definitions" : [
+                    "meta/definitions/software.php",
+                    "meta/definitions/authorize.php",
+                    "meta/definitions/cli.php",
+                    "meta/definitions/cronard.php",
+                    "meta/definitions/email.php",
+                    "meta/definitions/event.php",
+                    "meta/definitions/http.php",
+                    "meta/definitions/language.php",
+                    "meta/definitions/negundo.php",
+                    "meta/definitions/routes.php",
+                    "meta/definitions/software.php",
+                    "meta/definitions/storage.php",
+                    "meta/definitions/template.php",
+                ],
+                "config": [
+                    "meta/config.php"
+                ]
+            }
+        }
     }
 }
diff --git a/meta/config.php b/meta/config.php
new file mode 100644
index 0000000..d1e8b59
--- /dev/null
+++ b/meta/config.php
@@ -0,0 +1,14 @@
+<?php
+
+return [
+    'ulmus' => [
+        'connections' => [
+            'sqlite' => [
+                'adapter'  => 'SQLite',
+                'path'     => getenv('PROJECT_PATH') . DIRECTORY_SEPARATOR . "var/lean.sqlite3",
+                'pragma_begin' => "journal_mode=WAL",
+                'pragma_close' => "analysis_limit=500,optimize",
+            ],
+        ],
+    ],
+];
\ No newline at end of file
diff --git a/meta/definitions/software.php b/meta/definitions/software.php
index 56bbc16..ebb1344 100644
--- a/meta/definitions/software.php
+++ b/meta/definitions/software.php
@@ -1,5 +1,6 @@
 <?php
 
+use Taxus\Privilege;
 use function DI\autowire, DI\create, DI\get;
 
 use TheBugs\JavascriptMiddleware;
@@ -64,6 +65,13 @@ return [
         'routes' => [],
 
         'cronard' => [],
+
+        'taxus' => [
+            [ new Privilege("dev", "Is a developper of this application."), "is_dev" ],
+            [ new Privilege("admin", "Can manage mostly everything from this application."), "is_admin" ],
+            [ new Privilege("user", "Is an authenticated user."), "is_user" ],
+            [ new Privilege("anonymous", "Is an anonymous (unauthenticated) user."), "is_anonymous" ],
+        ]
     ],
 
     Lean::class => autowire(Lean::class),
diff --git a/meta/definitions/storage.php b/meta/definitions/storage.php
new file mode 100644
index 0000000..329a014
--- /dev/null
+++ b/meta/definitions/storage.php
@@ -0,0 +1,19 @@
+<?php
+
+use Psr\Container\ContainerInterface;
+
+use Ulmus\ConnectionAdapter,
+    Ulmus\Container\AdapterProxy;
+
+use Storage\Session;
+
+use function DI\autowire, DI\create, DI\get;
+
+return [
+    'lean:adapter.sqlite' => function($c) {
+        $adapter = new ConnectionAdapter('sqlite', $c->get('config')['ulmus'], true);
+        $adapter->resolveConfiguration();
+
+        return $adapter;
+    }
+];
diff --git a/src/Lean.php b/src/Lean.php
index a2d62d8..eecad36 100644
--- a/src/Lean.php
+++ b/src/Lean.php
@@ -93,6 +93,11 @@ class Lean
         return array_merge(...array_map(fn($app) => $app->events ?? [], $this->applications));
     }
 
+    public function getTaxusPrivileges() : array
+    {
+        return array_merge(...array_map(fn($app) => $app->taxus ?? [], $this->applications));
+    }
+
     public function getEntities() : array
     {
         return array_merge(...array_map(fn($app) => $app->entities ?? [], $this->applications));
@@ -152,6 +157,8 @@ class Lean
 
     public static function definitions() : array
     {
+        return [];
+
         $path = dirname(__DIR__) . "/meta/definitions/";
 
         return array_replace(
@@ -164,8 +171,8 @@ class Lean
             require($path . "language.php"),
             class_exists(\Negundo\Client\NegundoMiddleware::class) ? require($path . "negundo.php") : [],
             require($path . "routes.php"),
-            # require($path . "security.php"),
             require($path . "software.php"),
+            require($path . "storage.php"),
             class_exists(\Picea\Picea::class) ?  require($path . "template.php") : [],
         );
     }