diff --git a/classes/errors.php b/classes/errors.php
new file mode 100644
index 000000000..be175418e
--- /dev/null
+++ b/classes/errors.php
@@ -0,0 +1,12 @@
+<?php
+class Errors {
+	const E_SUCCESS = "E_SUCCESS";
+	const E_UNAUTHORIZED = "E_UNAUTHORIZED";
+	const E_UNKNOWN_METHOD = "E_UNKNOWN_METHOD";
+	const E_UNKNOWN_PLUGIN = "E_UNKNOWN_PLUGIN";
+	const E_SCHEMA_MISMATCH = "E_SCHEMA_MISMATCH";
+
+	static function to_json(string $code) {
+		return json_encode(["error" => ["code" => $code]]);
+	}
+}