diff --git a/src/includes/api/ListsController.php b/src/includes/api/ListsController.php
index 1224cf1..7f4720a 100644
--- a/src/includes/api/ListsController.php
+++ b/src/includes/api/ListsController.php
@@ -118,6 +118,10 @@ class ListsController extends ApiController {
         $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();
@@ -126,6 +130,9 @@ class ListsController extends ApiController {
             $db->ex("DELETE FROM {$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;
     }
 
@@ -182,6 +189,15 @@ class ListsController extends ApiController {
         );
     }
 
+    private function getListRowById(int $id)
+    {
+        $r = DBCore::default()->getListById($id);
+        if (!$r) {
+            throw new Exception("Failed to fetch list data");
+        }
+        return $this->prepareList($r, true);
+    }
+
     private function prepareList($row, bool $haveWriteAccess): array
     {
         $taskview = (int)$row['taskview'];
@@ -331,6 +347,13 @@ class ListsController extends ApiController {
         $db->ex("DELETE FROM {$db->prefix}todolist WHERE list_id=$listId and compl=1");
         $t['total'] = $db->affected();
         $db->ex("COMMIT");
+        if (MTTNotificationCenter::hasObserversForNotification(MTTNotification::didDeleteCompletedInList)) {
+            $list = $this->getListRowById($listId);
+            MTTNotificationCenter::postNotification(MTTNotification::didDeleteCompletedInList, [
+                'total' => $t['total'],
+                'list' => $list
+            ]);
+        }
         return $t;
     }
 
diff --git a/src/includes/api/TasksController.php b/src/includes/api/TasksController.php
index 9a0cbe8..6dbce5a 100644
--- a/src/includes/api/TasksController.php
+++ b/src/includes/api/TasksController.php
@@ -175,6 +175,10 @@ class TasksController extends ApiController {
     {
         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");
@@ -182,6 +186,9 @@ class TasksController extends ApiController {
         $db->dq("DELETE FROM {$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' => $id);
@@ -349,6 +356,7 @@ class TasksController extends ApiController {
                 array($title, $note, $prio, $duedate, time()) );
         $db->ex("COMMIT");
         $task = $this->getTaskRowById($id);
+        MTTNotificationCenter::postNotification(MTTNotification::didEditTask, ['task' => $task]);
         $t['list'][] = $task;
         $t['total'] = 1;
         return $t;
@@ -359,6 +367,13 @@ class TasksController extends ApiController {
         $fromId = (int)($this->req->jsonBody['from'] ?? 0);
         $toId = (int)($this->req->jsonBody['to'] ?? 0);
         $result = $this->doMoveTask($id, $toId);
+        if ($result && MTTNotificationCenter::hasObserversForNotification(MTTNotification::didEditTask)) {
+            $task = $this->getTaskRowById($id);
+            MTTNotificationCenter::postNotification(MTTNotification::didEditTask, [
+                'property' => 'list',
+                'task' => $task
+            ]);
+        }
         $t = array('total' => $result ? 1 : 0);
         if ($fromId == -1 && $result) {
             $t['list'][] = $this->getTaskRowById($id);
@@ -398,9 +413,11 @@ class TasksController extends ApiController {
         $dateCompleted = $compl ? $date : 0;
         $db->dq("UPDATE {$db->prefix}todolist SET compl=$compl,ow=$ow,d_completed=?,d_edited=? WHERE id=$id",
                     array($dateCompleted, $date) );
+        $task = $this->getTaskRowById($id);
+        MTTNotificationCenter::postNotification(MTTNotification::didCompleteTask, $task);
         $t = array();
         $t['total'] = 1;
-        $t['list'][] = $this->getTaskRowById($id);
+        $t['list'][] = $task;
         return $t;
     }
 
@@ -410,6 +427,13 @@ class TasksController extends ApiController {
         $note = $this->req->jsonBody['note'] ?? '';
         $note = str_replace("\r\n", "\n", $note);
         $db->dq("UPDATE {$db->prefix}todolist SET note=?,d_edited=? WHERE id=$id", array($note, time()) );
+        if (MTTNotificationCenter::hasObserversForNotification(MTTNotification::didEditTask)) {
+            $task = $this->getTaskRowById($id);
+            MTTNotificationCenter::postNotification(MTTNotification::didEditTask, [
+                'property' => 'note',
+                'task' => $task
+            ]);
+        }
         $t = array();
         $t['total'] = 1;
         $t['list'][] = array('id'=>$id, 'note'=> noteMarkup($note), 'noteText'=>(string)$note);
@@ -423,6 +447,13 @@ class TasksController extends ApiController {
         if ($prio < -1) $prio = -1;
         elseif ($prio > 2) $prio = 2;
         $db->ex("UPDATE {$db->prefix}todolist SET prio=$prio,d_edited=? WHERE id=$id", array(time()) );
+        if (MTTNotificationCenter::hasObserversForNotification(MTTNotification::didEditTask)) {
+            $task = $this->getTaskRowById($id);
+            MTTNotificationCenter::postNotification(MTTNotification::didEditTask, [
+                'property' => 'priority',
+                'task' => $task
+            ]);
+        }
         $t = array();
         $t['total'] = 1;
         $t['list'][] = array('id'=>$id, 'prio'=>$prio);
diff --git a/src/includes/class.dbcore.php b/src/includes/class.dbcore.php
index 7774310..12139e6 100644
--- a/src/includes/class.dbcore.php
+++ b/src/includes/class.dbcore.php
@@ -75,6 +75,14 @@ class DBCore
     }
 
 
+    public function getListById(int $id): ?array
+    {
+        $db = $this->db;
+        $r = $db->sqa("SELECT * FROM {$db->prefix}lists WHERE id=?", [$id]);
+        return $r;
+    }
+
+
     public function taskExists(int $id): bool
     {
         $db = $this->db;
diff --git a/src/includes/notifications.php b/src/includes/notifications.php
index efbd3d7..26dfda0 100644
--- a/src/includes/notifications.php
+++ b/src/includes/notifications.php
@@ -55,6 +55,18 @@ class MTTNotificationCenter
         self::$observers[$notification][] = $callback;
     }
 
+    /**
+     *
+     * @param string $notification
+     * @return bool
+     */
+    public static function hasObserversForNotification(string $notification): bool
+    {
+        if (isset(self::$observers[$notification]) && count(self::$observers[$notification]) > 0) {
+            return true;
+        }
+        return false;
+    }
 
     public static function postNotification(string $notification, $object)
     {
@@ -100,7 +112,12 @@ abstract class MTTNotification
 {
     const didFinishRequest = 'didFinishRequest';
     const didCreateTask = 'didCreateTask';
+    const didEditTask = 'didEditTask';
+    const didDeleteTask = 'didDeleteTask';
+    const didCompleteTask = 'didCompleteTask';
     const didCreateList = 'didCreateList';
+    const didDeleteList = 'didDeleteList';
+    const didDeleteCompletedInList = 'didDeleteCompletedInList';
 }
 
 function add_action(string $notification, callable $callback)