diff --git a/includes/Extensions/Batch40.php b/includes/Extensions/Batch40.php
new file mode 100644
index 0000000..cf51f34
--- /dev/null
+++ b/includes/Extensions/Batch40.php
@@ -0,0 +1,53 @@
+<?php
+/**
+ * Batch 40 — Polylang tools via its public template functions. Net-new, GPL-2.0-or-later. See NOTICE.md.
+ * Inert unless Polylang (POLYLANG_VERSION) is active.
+ */
+
+namespace AskTamMCP\Extensions;
+
+defined('ABSPATH') || exit;
+
+class Batch40 {
+
+    public static function register($registry): void {
+        if (!defined('POLYLANG_VERSION')) return;
+
+        $def = function (string $name, string $desc, array $props, array $required, string $scope, string $method) {
+            $schema = ['type' => 'object', 'properties' => $props ?: new \stdClass()];
+            if ($required) $schema['required'] = $required;
+            return ['name' => $name, 'description' => $desc, 'scope' => $scope,
+                    'handler' => 'AskTamMCP\\Extensions\\Batch40::' . $method, 'inputSchema' => $schema];
+        };
+
+        $registry->register($def('polylang_detect', 'Report whether Polylang is active, its version, and the default language.', [], [], 'read', 'detect'));
+        $registry->register($def('polylang_list_languages', 'List Polylang languages (slug) and the default.', [], [], 'read', 'listLanguages'));
+        $registry->register($def('polylang_get_post_language', 'Get the language slug of a post.',
+            ['post_id' => ['type' => 'integer']], ['post_id'], 'read', 'getPostLanguage'));
+        $registry->register($def('polylang_get_translations', 'Get the translation post ids of a post, keyed by language slug.',
+            ['post_id' => ['type' => 'integer']], ['post_id'], 'read', 'getTranslations'));
+    }
+
+    public static function detect(array $args): array {
+        return ['active' => defined('POLYLANG_VERSION'), 'version' => defined('POLYLANG_VERSION') ? POLYLANG_VERSION : null,
+            'default' => function_exists('pll_default_language') ? pll_default_language() : null];
+    }
+
+    public static function listLanguages(array $args): array {
+        $langs = function_exists('pll_languages_list') ? pll_languages_list() : [];
+        return ['count' => count((array) $langs), 'languages' => array_values((array) $langs),
+            'default' => function_exists('pll_default_language') ? pll_default_language() : null];
+    }
+
+    public static function getPostLanguage(array $args): array {
+        $id = (int) ($args['post_id'] ?? 0);
+        $lang = function_exists('pll_get_post_language') ? pll_get_post_language($id) : null;
+        return ['post_id' => $id, 'language' => $lang];
+    }
+
+    public static function getTranslations(array $args): array {
+        $id = (int) ($args['post_id'] ?? 0);
+        $tr = function_exists('pll_get_post_translations') ? pll_get_post_translations($id) : [];
+        return ['post_id' => $id, 'translations' => (array) $tr];
+    }
+}