diff --git a/src/.htaccess b/src/.htaccess
index 194f78e..76b8d44 100644
--- a/src/.htaccess
+++ b/src/.htaccess
@@ -1,12 +1,16 @@
-# For Apache
+# For REST API in Apache
 #<IfModule mod_rewrite.c>
 #    RewriteEngine On
 #    RewriteCond %{REQUEST_FILENAME} !-f
 #    RewriteCond %{REQUEST_FILENAME} !-d
 #    RewriteRule ^api/(.*)$ api.php/$1 [L,QSA]
 #</IfModule>
+#<Limit GET POST PUT DELETE>
+#  Allow from all
+#</Limit>
 
-# For Nginx set something like this:
+
+# In Nginx set something like this:
 # location /api/ {
 #    rewrite ^/api/(.*) /api.php/$1 last;
 # }
diff --git a/src/api.php b/src/api.php
index 5eae879..cb6a8aa 100644
--- a/src/api.php
+++ b/src/api.php
@@ -32,6 +32,7 @@ $endpoints = array(
         'GET'     => [ ListsController::class , 'getId' ],
         'PUT'     => [ ListsController::class , 'putId' ],
         'DELETE'  => [ ListsController::class , 'deleteId' ],
+        'POST'    => [ ListsController::class , 'putId' ], //compatibility
     ],
     '/tasks' => [
         'GET'  => [ TasksController::class , 'get' ],
@@ -41,6 +42,7 @@ $endpoints = array(
     '/tasks/(-?\d+)' => [
         'PUT'     => [ TasksController::class , 'putId' ],
         'DELETE'  => [ TasksController::class , 'deleteId' ],
+        'POST'    => [ TasksController::class , 'putId' ], //compatibility
     ],
     '/tasks/parseTitle' => [
         'POST' => [ TasksController::class , 'postTitleParse' ],
@@ -60,6 +62,7 @@ $endpoints = array(
     '/ext-settings/(.+)' => [
         'GET'     => [ ExtSettingsController::class , 'get' ],
         'PUT'     => [ ExtSettingsController::class , 'put' ],
+        'POST'    => [ ExtSettingsController::class , 'put' ], //compatibility
     ]
 );
 
diff --git a/src/content/mytinytodo_api.js b/src/content/mytinytodo_api.js
index 57a5fe5..af97a1a 100644
--- a/src/content/mytinytodo_api.js
+++ b/src/content/mytinytodo_api.js
@@ -1,6 +1,6 @@
 /*
     This file is a part of myTinyTodo.
-    (C) Copyright 2010,2020,2022 Max Pozdeev <maxpozdeev@gmail.com>
+    (C) Copyright 2010,2020-2023 Max Pozdeev <maxpozdeev@gmail.com>
     Licensed under the GNU GPL version 2 or any later. See file COPYRIGHT for details.
 */
 
@@ -9,10 +9,12 @@
 "use strict";
 
 var mtt;
+var useREST = true;
 
 function MytinytodoAjaxApi(amtt)
 {
     mtt = amtt;
+    useREST = false;
 }
 
 window.MytinytodoAjaxApi = MytinytodoAjaxApi;
@@ -22,7 +24,9 @@ MytinytodoAjaxApi.prototype =
     /* required method */
     request: function(action, params, callback)
     {
-        if (!this[action]) throw "Unknown ApiDriver action: " + action;
+        if (!this[action] || typeof this[action] !== 'function') {
+            throw "Unknown ApiDriver action: " + action;
+        }
 
         this[action] (params, function(json){
             if (json.denied) mtt.errorDenied();
@@ -50,7 +54,7 @@ MytinytodoAjaxApi.prototype =
             method: 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
-                action: 'simple',
+                action: 'newSimple',
                 list: params.list,
                 title: params.title,
                 tag: params.tag,
@@ -68,7 +72,7 @@ MytinytodoAjaxApi.prototype =
             method: 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
-                action: 'full',
+                action: 'newFull',
                 list: params.list,
                 title: params.title,
                 note: params.note,
@@ -87,7 +91,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'tasks/' + encodeURIComponent(params.id),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'edit',
@@ -107,7 +111,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'tasks/' + encodeURIComponent(params.id),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'note',
@@ -123,7 +127,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'tasks/' + encodeURIComponent(params.id),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'complete',
@@ -139,7 +143,11 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'tasks/' + encodeURIComponent(params.id),
-            method: 'DELETE',
+            method: useREST ? 'DELETE' : 'POST',
+            contentType : 'application/json', // contentType and data are required if method is POST
+            data: JSON.stringify({
+                action: 'delete',
+            }),
             success: callback,
             dataType: 'json'
         });
@@ -150,7 +158,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'tasks/' + encodeURIComponent(params.id),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'priority',
@@ -165,7 +173,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'tasks',
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'order',
@@ -190,7 +198,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'tasks/' + encodeURIComponent(params.id),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'move',
@@ -232,6 +240,7 @@ MytinytodoAjaxApi.prototype =
             method: 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
+                action: 'new',
                 name: params.name,
             }),
             success: callback,
@@ -244,7 +253,11 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'lists/' + encodeURIComponent(params.list),
-            method: 'DELETE',
+            method: useREST ? 'DELETE' : 'POST',
+            contentType : 'application/json', // contentType and data are required if method is POST
+            data: JSON.stringify({
+                action: 'delete',
+            }),
             success: callback,
             dataType: 'json'
         });
@@ -254,7 +267,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'lists/' + encodeURIComponent(params.list),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'rename',
@@ -269,7 +282,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'lists/' + encodeURIComponent(params.list),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'sort',
@@ -285,7 +298,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'lists/' + encodeURIComponent(params.list),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'publish',
@@ -300,7 +313,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'lists/' + encodeURIComponent(params.list),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'enableFeedKey',
@@ -315,7 +328,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'lists/' + encodeURIComponent(params.list),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'showNotes',
@@ -330,7 +343,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'lists/' + encodeURIComponent(params.list),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'hide',
@@ -345,7 +358,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'lists',
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'order',
@@ -360,7 +373,7 @@ MytinytodoAjaxApi.prototype =
     {
         $.ajax({
             url: mtt.apiUrl + 'lists/' + encodeURIComponent(params.list),
-            method: 'PUT',
+            method: useREST ? 'PUT' : 'POST',
             contentType : 'application/json',
             data: JSON.stringify({
                 action: 'clearCompleted',
diff --git a/src/includes/api/ListsController.php b/src/includes/api/ListsController.php
index 6440a7e..cd2dbc1 100644
--- a/src/includes/api/ListsController.php
+++ b/src/includes/api/ListsController.php
@@ -40,7 +40,7 @@ class ListsController extends ApiController {
 
 
     /**
-     * Create new list
+     * Create new list and Actions with all lists
      * Code 201 on success
      * @return void
      * @throws Exception
@@ -48,15 +48,12 @@ class ListsController extends ApiController {
     function post()
     {
         checkWriteAccess();
-        $id = DBCore::default()->createListWithName($this->req->jsonBody['name'] ?? '');
-        $db = DBConnection::instance();
-        $t = array();
-        $t['total'] = 1;
-        $r = $db->sqa("SELECT * FROM {$db->prefix}lists WHERE id=$id");
-        $oo = $this->prepareList($r, true);
-        MTTNotificationCenter::postNotification(MTTNotification::didCreateList, $oo);
-        $t['list'][] = $oo;
-        $this->response->data = $t;
+        $action = $this->req->jsonBody['action'] ?? '';
+        switch ($action) {
+            case 'order': $this->response->data = $this->changeListOrder(); break; //compatibility
+            case 'new':
+            default:      $this->response->data = $this->createList();
+        }
     }
 
     /**
@@ -105,32 +102,13 @@ class ListsController extends ApiController {
     function deleteId($id)
     {
         checkWriteAccess();
-        $db = DBConnection::instance();
-        $t = array();
-        $t['total'] = 0;
-        $id = (int)$id;
-        $list = null;
-        if (MTTNotificationCenter::hasObserversForNotification(MTTNotification::didDeleteList)) {
-            $list = $this->getListRowById($id);
-        }
-        $db->ex("BEGIN");
-        $db->ex("DELETE FROM {$db->prefix}lists WHERE id=$id");
-        $t['total'] = $db->affected();
-        if ($t['total']) {
-            $db->ex("DELETE FROM {$db->prefix}tag2task WHERE list_id=$id");
-            $db->ex("DELETE FROM {$db->prefix}todolist WHERE list_id=$id");
-        }
-        $db->ex("COMMIT");
-        if ($t['total'] && MTTNotificationCenter::hasObserversForNotification(MTTNotification::didDeleteList)) {
-            MTTNotificationCenter::postNotification(MTTNotification::didDeleteList, $list);
-        }
-        $this->response->data = $t;
+        $this->response->data = $this->deleteList($id);
     }
 
 
     /**
      * Edit some properties of List
-     * Actions: rename
+     * Actions: rename, ...
      * @param mixed $id
      * @return void
      * @throws Exception
@@ -149,6 +127,7 @@ class ListsController extends ApiController {
             case 'showNotes':      $this->response->data = $this->showNotes($id);      break;
             case 'hide':           $this->response->data = $this->hideList($id);       break;
             case 'clearCompleted': $this->response->data = $this->clearCompleted($id); break;
+            case 'delete':         $this->response->data = $this->deleteList($id);     break; //compatibility
             default:               $this->response->data = ['total' => 0];
         }
     }
@@ -214,6 +193,23 @@ class ListsController extends ApiController {
         );
     }
 
+    private function createList(): ?array
+    {
+        $t = array();
+        $t['total'] = 0;
+        $id = DBCore::default()->createListWithName($this->req->jsonBody['name'] ?? '');
+        if (!$id) {
+            return $t;
+        }
+        $db = DBConnection::instance();
+        $t['total'] = 1;
+        $r = $db->sqa("SELECT * FROM {$db->prefix}lists WHERE id=$id");
+        $oo = $this->prepareList($r, true);
+        MTTNotificationCenter::postNotification(MTTNotification::didCreateList, $oo);
+        $t['list'][] = $oo;
+        return $t;
+    }
+
     private function renameList(int $id): ?array
     {
         $db = DBConnection::instance();
@@ -371,4 +367,27 @@ class ListsController extends ApiController {
         return $t;
     }
 
+    private function deleteList(int $id)
+    {
+        $db = DBConnection::instance();
+        $t = array();
+        $t['total'] = 0;
+        $id = (int)$id;
+        $list = null;
+        if (MTTNotificationCenter::hasObserversForNotification(MTTNotification::didDeleteList)) {
+            $list = $this->getListRowById($id);
+        }
+        $db->ex("BEGIN");
+        $db->ex("DELETE FROM {$db->prefix}lists WHERE id=$id");
+        $t['total'] = $db->affected();
+        if ($t['total']) {
+            $db->ex("DELETE FROM {$db->prefix}tag2task WHERE list_id=$id");
+            $db->ex("DELETE FROM {$db->prefix}todolist WHERE list_id=$id");
+        }
+        $db->ex("COMMIT");
+        if ($t['total'] && MTTNotificationCenter::hasObserversForNotification(MTTNotification::didDeleteList)) {
+            MTTNotificationCenter::postNotification(MTTNotification::didDeleteList, $list);
+        }
+        return $t;
+    }
 }
diff --git a/src/includes/api/TasksController.php b/src/includes/api/TasksController.php
index 8593764..446300a 100644
--- a/src/includes/api/TasksController.php
+++ b/src/includes/api/TasksController.php
@@ -135,22 +135,27 @@ class TasksController extends ApiController {
 
     /**
      * Create new task
-     * action: simple or full
+     * action: newSimple or newFull
      * @return void
      * @throws Exception
      */
     function post()
     {
-        $listId = (int)($this->req->jsonBody['list'] ?? 0);
-        checkWriteAccess($listId);
         $action = $this->req->jsonBody['action'] ?? '';
-        if ($action == 'full') {
-            $this->response->data = $this->fullNewTaskInList($listId);
+        if ($action == 'order') { //compatibility
+            checkWriteAccess();
+            $this->response->data = $this->changeTaskOrder();
         }
         else {
-            $this->response->data = $this->newTaskInList($listId);
+            $listId = (int)($this->req->jsonBody['list'] ?? 0);
+            checkWriteAccess($listId);
+            if ($action == 'newFull') {
+                $this->response->data = $this->fullNewTaskInList($listId);
+            }
+            else {
+                $this->response->data = $this->newTaskInList($listId);
+            }
         }
-
     }
 
     /**
@@ -178,25 +183,7 @@ class TasksController extends ApiController {
     function deleteId($id)
     {
         checkWriteAccess();
-        $id = (int)$id;
-        $task = null;
-        if (MTTNotificationCenter::hasObserversForNotification(MTTNotification::didDeleteTask)) {
-            $task = $this->getTaskRowById($id);
-        }
-        $db = DBConnection::instance();
-        $db->ex("BEGIN");
-        $db->ex("DELETE FROM {$db->prefix}tag2task WHERE task_id=$id");
-        //TODO: delete unused tags?
-        $db->dq("DELETE FROM {$db->prefix}todolist WHERE id=$id");
-        $deleted = $db->affected();
-        $db->ex("COMMIT");
-        if ($deleted && MTTNotificationCenter::hasObserversForNotification(MTTNotification::didDeleteTask)) {
-            MTTNotificationCenter::postNotification(MTTNotification::didDeleteTask, $task);
-        }
-        $t = array();
-        $t['total'] = $deleted;
-        $t['list'][] = array('id' => $id);
-        $this->response->data = $t;
+        $this->response->data = $this->deleteTask((int)$id);
     }
 
     /**
@@ -222,6 +209,7 @@ class TasksController extends ApiController {
             case 'note':     $this->response->data = $this->editNote($id);     break;
             case 'move':     $this->response->data = $this->moveTask($id);     break;
             case 'priority': $this->response->data = $this->priorityTask($id); break;
+            case 'delete':   $this->response->data = $this->deleteTask($id);   break; //compatibility
             default:         $this->response->data = ['total' => 0];
         }
     }
@@ -557,6 +545,29 @@ class TasksController extends ApiController {
         return $t;
     }
 
+    private function deleteTask(int $id)
+    {
+        $id = (int)$id;
+        $task = null;
+        if (MTTNotificationCenter::hasObserversForNotification(MTTNotification::didDeleteTask)) {
+            $task = $this->getTaskRowById($id);
+        }
+        $db = DBConnection::instance();
+        $db->ex("BEGIN");
+        $db->ex("DELETE FROM {$db->prefix}tag2task WHERE task_id=$id");
+        //TODO: delete unused tags?
+        $db->dq("DELETE FROM {$db->prefix}todolist WHERE id=$id");
+        $deleted = $db->affected();
+        $db->ex("COMMIT");
+        if ($deleted && MTTNotificationCenter::hasObserversForNotification(MTTNotification::didDeleteTask)) {
+            MTTNotificationCenter::postNotification(MTTNotification::didDeleteTask, $task);
+        }
+        $t = array();
+        $t['total'] = $deleted;
+        $t['list'][] = array('id' => $id);
+        return $t;
+    }
+
     private function getUserListsSimple(bool $readOnly = false): array
     {
         $db = DBConnection::instance();
diff --git a/src/includes/class.dbcore.php b/src/includes/class.dbcore.php
index 313d93e..8179f46 100644
--- a/src/includes/class.dbcore.php
+++ b/src/includes/class.dbcore.php
@@ -170,10 +170,13 @@ class DBCore
         return $data;
     }
 
-    function createListWithName(string $name): int
+    function createListWithName(string $name): ?int
     {
         $db = DBConnection::instance();
         $name = str_replace( ['"',"'",'<','>','&'], '', trim($name) );
+        if ($name == '') {
+            return null;
+        }
         $ow = 1 + (int)$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 (?,?,?,?,?,?)",