diff --git a/api/next.php b/api/next.php
new file mode 100644
index 0000000..bb159db
--- /dev/null
+++ b/api/next.php
@@ -0,0 +1,43 @@
+<?php
+
+require_once '../includes/config.php';
+require_once '../includes/functions.php';
+require_once '../includes/jsondb.php';
+require_once '../includes/srs.php';
+require_once '../includes/srs_queue.php';
+require_once '../includes/auth.php';
+
+requireLogin();
+
+header('Content-Type: application/json');
+
+$user = $_SESSION['user'];
+
+$lang = $_GET['lang'];
+$list = $_GET['list'];
+
+$file = listPath($user, $lang, $list);
+$data = JsonDB::read($file);
+
+if (!isset($data['words'])) {
+    echo json_encode(['error' => 'no_list']);
+    exit;
+}
+
+$words = sortDueWords($data['words']);
+
+$today = date('Y-m-d');
+
+$due = array_filter($words, function ($w) use ($today) {
+    return !isset($w['nextReview']) || $w['nextReview'] <= $today;
+});
+
+if (count($due) === 0) {
+    $due = $words;
+}
+
+$word = array_values($due)[0];
+
+echo json_encode([
+    'word' => $word
+]);
\ No newline at end of file