diff --git a/admin/tool/mobile/classes/api.php b/admin/tool/mobile/classes/api.php
index 160c4f0bdfe..189f99e3a4e 100644
--- a/admin/tool/mobile/classes/api.php
+++ b/admin/tool/mobile/classes/api.php
@@ -90,6 +90,25 @@ class api {
 
                 require("$path/db/mobile.php");
                 foreach ($addons as $addonname => $addoninfo) {
+
+                    // Add handlers (for site add-ons).
+                    $handlers = !empty($addoninfo['handlers']) ? $addoninfo['handlers'] : array();
+                    $handlers = json_encode($handlers); // JSON formatted, since it is a complex structure that may vary over time.
+
+                    // Now language strings used by the app.
+                    $lang = array();
+                    if (!empty($addoninfo['lang'])) {
+                        $stringmanager = get_string_manager();
+                        $langs = $stringmanager->get_list_of_translations();
+                        foreach ($langs as $langid => $langname) {
+                            foreach ($addoninfo['lang'] as $stringinfo) {
+                                $lang[$langid][$stringinfo[0]] =
+                                    $stringmanager->get_string($stringinfo[0], $stringinfo[1], null, $langid);
+                            }
+                        }
+                    }
+                    $lang = json_encode($lang);
+
                     $plugininfo = array(
                         'component' => $component,
                         'version' => $version,
@@ -97,7 +116,9 @@ class api {
                         'dependencies' => !empty($addoninfo['dependencies']) ? $addoninfo['dependencies'] : array(),
                         'fileurl' => '',
                         'filehash' => '',
-                        'filesize' => 0
+                        'filesize' => 0,
+                        'handlers' => $handlers,
+                        'lang' => $lang,
                     );
 
                     // All the mobile packages must be under the plugin mobile directory.
diff --git a/admin/tool/mobile/classes/external.php b/admin/tool/mobile/classes/external.php
index 7df769bb8ad..398a1a76c86 100644
--- a/admin/tool/mobile/classes/external.php
+++ b/admin/tool/mobile/classes/external.php
@@ -91,7 +91,9 @@ class external extends external_api {
                             'fileurl' => new external_value(PARAM_URL, 'The addon package url for download
                                                             or empty if it doesn\'t exist.'),
                             'filehash' => new external_value(PARAM_RAW, 'The addon package hash or empty if it doesn\'t exist.'),
-                            'filesize' => new external_value(PARAM_INT, 'The addon package size or empty if it doesn\'t exist.')
+                            'filesize' => new external_value(PARAM_INT, 'The addon package size or empty if it doesn\'t exist.'),
+                            'handlers' => new external_value(PARAM_RAW, 'Handlers definition (JSON)', VALUE_OPTIONAL),
+                            'lang' => new external_value(PARAM_RAW, 'Language strings used by the handlers (JSON)', VALUE_OPTIONAL),
                         )
                     )
                 ),
diff --git a/admin/tool/mobile/upgrade.txt b/admin/tool/mobile/upgrade.txt
index 6c2c704981a..2149382be8d 100644
--- a/admin/tool/mobile/upgrade.txt
+++ b/admin/tool/mobile/upgrade.txt
@@ -1,6 +1,11 @@
 This files describes changes in tool_mobile code.
 Information provided here is intended especially for developers.
 
+=== 3.5 ===
+
+ * External function tool_mobile::tool_mobile_get_plugins_supporting_mobile now returns additional plugins information required by
+   Moodle Mobile 3.5.0.
+
 === 3.4 ===
 
  * External function tool_mobile::tool_mobile_get_plugins_supporting_mobile is now available via AJAX for not logged users.