diff --git a/api/list.php b/api/list.php
index 43c154b..86159e8 100644
--- a/api/list.php
+++ b/api/list.php
@@ -1,30 +1,66 @@
 <?php
 
+declare(strict_types=1);
+
 require_once __DIR__ . '/../includes/config.php';
 require_once __DIR__ . '/../includes/jsondb.php';
+require_once __DIR__ . '/../includes/functions.php';
 require_once __DIR__ . '/../includes/auth.php';
 
-requireLogin();
+header('Content-Type: application/json; charset=utf-8');
 
-header('Content-Type: application/json');
+try {
 
-$user = $_SESSION['user'];
+    if (!isset($_SESSION['user'])) {
+        echo json_encode([
+            'error' => 'not_logged_in'
+        ]);
+        exit;
+    }
 
-$lang = $_GET['lang'] ?? '';
-$list = $_GET['list'] ?? '';
+    $user = $_SESSION['user'];
 
-$file = listPath($user, $lang, $list);
+    $lang = $_GET['lang'] ?? '';
+    $list = $_GET['list'] ?? '';
 
-$data = JsonDB::read($file);
+    if ($lang === '' || $list === '') {
+        echo json_encode([
+            'error' => 'missing_params'
+        ]);
+        exit;
+    }
+
+    $file = listPath($user, $lang, $list);
+
+    if (!file_exists($file)) {
+        echo json_encode([
+            'error' => 'file_not_found',
+            'file' => $file
+        ]);
+        exit;
+    }
+
+    $data = JsonDB::read($file);
+
+    if (!is_array($data) || !isset($data['words'])) {
+        echo json_encode([
+            'error' => 'invalid_data_structure'
+        ]);
+        exit;
+    }
 
-if (!isset($data['words'])) {
     echo json_encode([
-        'error' => 'list_not_found'
+        'ok' => true,
+        'metadata' => $data['metadata'] ?? null,
+        'words' => $data['words']
     ]);
-    exit;
-}
 
-echo json_encode([
-    'metadata' => $data['metadata'] ?? null,
-    'words' => $data['words']
-]);
\ No newline at end of file
+} catch (Throwable $e) {
+
+    http_response_code(500);
+
+    echo json_encode([
+        'error' => 'server_exception',
+        'message' => $e->getMessage()
+    ]);
+}
\ No newline at end of file