diff --git a/composer.json b/composer.json
index 5772287..c0366b5 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,12 @@
 {
   "name": "mcnd/taxus",
   "description": "A simple privilege library to handle an application's permissions.",
-  "keywords": ["mcnd","privilege","permission","taxus"],
+  "keywords": [
+    "mcnd",
+    "privilege",
+    "permission",
+    "taxus"
+  ],
   "license": "MIT",
   "authors": [
     {
@@ -13,5 +18,14 @@
     "psr-4": {
       "Taxus\\": "src/"
     }
+  },
+  "extra": {
+    "lean": {
+      "autoload": {
+        "definitions": [
+          "meta/definitions.php"
+        ]
+      }
+    }
   }
-}
+}
\ No newline at end of file
diff --git a/meta/definitions.php b/meta/definitions.php
new file mode 100644
index 0000000..74a1354
--- /dev/null
+++ b/meta/definitions.php
@@ -0,0 +1,22 @@
+<?php
+
+use function DI\autowire, DI\create, DI\get;
+
+use Storage\Session;
+
+use Taxus\{ Privilege, Taxus, PermissionGrantInterface, DefaultPermissionGrant };
+
+use Psr\Http\Message\ServerRequestInterface;
+
+return [
+
+    Taxus::class => function ($c) {
+        $taxus = new Taxus( $c->get(PermissionGrantInterface::class) );
+
+        $taxus->add(... $c->get(Lean\Lean::class)->getTaxusPrivileges());
+
+        return $taxus;
+    },
+
+    PermissionGrantInterface::class => create(PermissionGrantInterface::class)->constructor(get(ServerRequestInterface::class), get(Session::class)),
+];
\ No newline at end of file