diff --git a/includes/list-files.php b/includes/list-files.php
new file mode 100644
index 0000000..4a9ae9d
--- /dev/null
+++ b/includes/list-files.php
@@ -0,0 +1,16 @@
+<?php
+
+// Directory with JSON files
+$jsonDir = __DIR__ . '/archive/';
+
+// List all matching JSON files
+$files = array_values(array_filter(scandir($jsonDir), function($f) {
+    return preg_match('/^fail2ban-events-\d{8}\.json$/', $f);
+}));
+
+// Sort files descending (newest first)
+rsort($files);
+
+// Output as JSON for JS
+$filesJson = json_encode($files);
+?>