Requirements A ws setup. A ws client of your choice. You can use https://github.com/ankitagarwal/moodle-ws-client/blob/master/client.php if you like. Test Create a few notes. (You can do this by visiting any user profile in a course). Add notes in all different contexts (Site, personal, course) Update your ws script to call function "core_notes_get_notes" and params as an array of note ids $params['notes'] = array(1,2,3); // If using REST $params = array(array(1,2,3)); // for xml-rpc Make the ws call, make sure you get the note details in response and not an invalid param error. Repeat this with core_notes_delete_notes (The response for delete calls are empty xml structure)