diff --git a/src/Picea/Extension.php b/src/Picea/Extension.php
new file mode 100644
index 0000000..3ae9c3a
--- /dev/null
+++ b/src/Picea/Extension.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Taxus\Picea;
+
+use Picea\Compiler\Context;
+use Taxus\Taxus;
+
+class Extension implements \Picea\Extension\Extension
+{
+    protected Taxus $taxus;
+
+    public function __construct(Context $context, Taxus $taxus)
+    {
+        $this->register($context);
+
+        $this->taxus = $taxus;
+    }
+
+    public function register(Context $context) : void
+    {
+        $context->pushFunction("taxus", [ $this, 'taxus' ]);
+    }
+
+    public function parse(/*\Picae\Compiler\Context*/ &$context, ?string $arguments, string $token) {
+        return "";
+    }
+
+    public function taxus(string $name, ...$arguments) : bool
+    {
+        return $this->taxus->granted($name, ...$arguments);
+    }
+
+}