diff --git a/h5p.classes.php b/h5p.classes.php
new file mode 100644
index 0000000..b50a5c6
--- /dev/null
+++ b/h5p.classes.php
@@ -0,0 +1,14 @@
+<?php
+interface h5pFramework {
+  function setErrorMessage($message);
+  function setInfoMessage($message);
+  function translate($message, $replacements);
+}
+
+class h5p {
+  public $h5pFramework;
+  public function __construct($h5pFramework) {
+    $this->h5pFramework = $h5pFramework;
+  }
+}
+?>