diff --git a/src/content/mytinytodo.js b/src/content/mytinytodo.js
index 606fa2b..6b8a422 100644
--- a/src/content/mytinytodo.js
+++ b/src/content/mytinytodo.js
@@ -2876,6 +2876,10 @@ function extensionSettingsAction(actionString, ext, formData)
                 window.location.assign(json.redirect);
                 return;
             }
+            if (json.html) {
+                $('#page_ajax .mtt-settings-table').html(json.html); //FIXME: maybe whole page?
+                return;
+            }
             const callback = function() {
                 if (json.msg) flashInfo(json.msg, json.details);
                 if (json.reload) {
diff --git a/src/includes/api/ListsController.php b/src/includes/api/ListsController.php
index 7f4720a..012737f 100644
--- a/src/includes/api/ListsController.php
+++ b/src/includes/api/ListsController.php
@@ -2,7 +2,7 @@
 
 /*
     This file is a part of myTinyTodo.
-    (C) Copyright 2022 Max Pozdeev <maxpozdeev@gmail.com>
+    (C) Copyright 2022-2023 Max Pozdeev <maxpozdeev@gmail.com>
     Licensed under the GNU GPL version 2 or any later. See file COPYRIGHT for details.
 */
 
@@ -47,19 +47,9 @@ class ListsController extends ApiController {
     function post()
     {
         checkWriteAccess();
+        $id = DBCore::default()->createListWithName($this->req->jsonBody['name'] ?? '');
         $db = DBConnection::instance();
         $t = array();
-        $t['total'] = 0;
-        $name = str_replace(
-            array('"',"'",'<','>','&'),
-            '',
-            trim( $this->req->jsonBody['name'] ?? '' )
-        );
-        $ow = 1 + (int)$db->sq("SELECT MAX(ow) FROM {$db->prefix}lists");
-        $time = time();
-        $db->dq("INSERT INTO {$db->prefix}lists (uuid,name,ow,d_created,d_edited,taskview) VALUES (?,?,?,?,?,?)",
-                    array(generateUUID(), $name, $ow, $time, $time, 1) );
-        $id = $db->lastInsertId();
         $t['total'] = 1;
         $r = $db->sqa("SELECT * FROM {$db->prefix}lists WHERE id=$id");
         $oo = $this->prepareList($r, true);
diff --git a/src/includes/class.dbcore.php b/src/includes/class.dbcore.php
index 12139e6..2191188 100644
--- a/src/includes/class.dbcore.php
+++ b/src/includes/class.dbcore.php
@@ -2,7 +2,7 @@
 
 /*
     This file is a part of myTinyTodo.
-    (C) Copyright 2022 Max Pozdeev <maxpozdeev@gmail.com>
+    (C) Copyright 2022-2023 Max Pozdeev <maxpozdeev@gmail.com>
     Licensed under the GNU GPL version 2 or any later. See file COPYRIGHT for details.
 */
 
@@ -169,5 +169,34 @@ class DBCore
         }
         return $data;
     }
+
+    function createListWithName(string $name): int
+    {
+        $db = DBConnection::instance();
+        $name = str_replace( ['"',"'",'<','>','&'], '', trim($name) );
+        $ow = 1 + (int)$db->sq("SELECT MAX(ow) FROM {$db->prefix}lists");
+        $time = time();
+        $db->dq("INSERT INTO {$db->prefix}lists (uuid,name,ow,d_created,d_edited,taskview) VALUES (?,?,?,?,?,?)",
+                    array(generateUUID(), $name, $ow, $time, $time, 1) );
+        $id = $db->lastInsertId();
+        return (int)$id;
+    }
+
+    /**
+     * Finds all variations of tag by its "normalized" name. Return array of id.
+     * @param string $name
+     * @return int[]
+     * @throws Exception
+     */
+    function getTagIdsByName(string $name): array
+    {
+        $db = DBConnection::instance();
+        $q = $db->dq("SELECT id FROM {$db->prefix}tags WHERE ". $db->like('name', '%s', $name));
+        $a = [];
+        while ($r = $q->fetchAssoc()) {
+            $a[] = (int) $r['id'];
+        }
+        return $a;
+    }
 }
 
diff --git a/src/includes/classes.php b/src/includes/classes.php
index 388f43d..f6cbdd1 100644
--- a/src/includes/classes.php
+++ b/src/includes/classes.php
@@ -2,7 +2,7 @@
 
 /*
     This file is a part of myTinyTodo.
-    (C) Copyright 2022 Max Pozdeev <maxpozdeev@gmail.com>
+    (C) Copyright 2022-2023 Max Pozdeev <maxpozdeev@gmail.com>
     Licensed under the GNU GPL version 2 or any later. See file COPYRIGHT for details.
 */
 
@@ -89,9 +89,10 @@ abstract class ApiController
 
 abstract class MTTExtension
 {
-    const bundleId = '';
+    const bundleId = ''; //abstract
 
-    abstract function init();
+    function init() {
+    }
 
     public static function extMetaInfo(string $ext): ?array
     {
@@ -114,9 +115,18 @@ abstract class MTTExtension
         return null;
     }
 
-    public function httpApiUrlPrefix()
+    public static function extApiActionUrl(string $action, ?string $params = null)
     {
-        return get_unsafe_mttinfo('api_url'). 'ext/'. $this::bundleId;
+        $url = get_unsafe_mttinfo('api_url'). 'ext/'. static::bundleId. "/$action";
+        if (!is_null($params)) {
+            if (false !== strpos($url, '?')) {
+                $url .= '&'. $params;
+            }
+            else {
+                $url .= '?'. $params;
+            }
+        }
+        return $url;
     }
 
 }