diff --git a/application/controllers/api/frontend/v1/coodle/Coodle.php b/application/controllers/api/frontend/v1/coodle/Coodle.php
new file mode 100644
index 000000000..b501f47b6
--- /dev/null
+++ b/application/controllers/api/frontend/v1/coodle/Coodle.php
@@ -0,0 +1,186 @@
+.
+ */
+
+if (!defined('BASEPATH'))
+ exit('No direct script access allowed');
+
+class Coodle extends FHCAPI_Controller
+{
+
+ /**
+ * Object initialization
+ */
+ public function __construct()
+ {
+ parent::__construct([
+ 'searchParticipants' => self::PERM_LOGGED,
+ ]);
+
+ $this->load->library('PermissionLib');
+
+ $this->load->model('person/Benutzer_model', 'BenutzerModel');
+
+ // todo: remove unnecessary crap
+ $this->load->model('ressource/mitarbeiter_model', 'MitarbeiterModel');
+ $this->load->model('person/Person_model', 'PersonModel');
+
+
+ //? put the uid and pid inside the controller for reusability
+ $this->uid = getAuthUID();
+ $this->pid = getAuthPersonID();
+
+ }
+
+ //------------------------------------------------------------------------------------------------------------------
+ // Public methods
+
+ public function searchParticipants()
+ {
+ $searchString = $this->input->post("searchString");
+
+ if (!$searchString || !strlen($searchString))
+ $this->terminateWithError("Empty search input!");
+
+ $users = $this->searchUsersAsParticipants($searchString);
+ $groups = $this->searchGroupsAsParticipants($searchString);
+
+ $potentialParticipants = array_merge($users, $groups);
+
+ $this->terminateWithSuccess($potentialParticipants);
+ }
+
+
+ // -----------------------------------------------------------------------------------------------------------------
+ // Private methods
+
+ private function searchUsersAsParticipants($searchString)
+ {
+ $searchStrings = explode(" ", strtolower($searchString));
+
+ $firstSearchString = $searchStrings[0];
+ $remainingSearchStrings = array_slice($searchStrings, 1);
+
+ $query = "
+ SELECT
+ 'user' AS type,
+ benutzer.uid AS uid,
+ person.vorname || ' ' || person.nachname AS name
+ FROM public.tbl_person person
+ JOIN public.tbl_benutzer benutzer ON(benutzer.person_id = person.person_id)
+ WHERE LOWER(person.vorname || ' ' || person.nachname) LIKE '%" . $firstSearchString . "%'
+ ";
+
+ if (count($remainingSearchStrings)) {
+ foreach ($remainingSearchStrings as $remainingSearchString) {
+ $query .= " AND LOWER(person.vorname || ' ' || person.nachname) LIKE '%" . $remainingSearchString . "%'";
+ }
+ }
+
+ $query .= " LIMIT 25";
+
+ $dbModel = new DB_Model();
+ $usersQueryResult = $dbModel->execReadOnlyQuery($query);
+
+ if (hasData($usersQueryResult)) {
+ return getData($usersQueryResult);
+ } else {
+ return [];
+ }
+
+ }
+
+ private function searchGroupsAsParticipants($searchString)
+ {
+ $searchStrings = explode(" ", strtolower($searchString));
+
+ $firstSearchString = $searchStrings[0];
+ $remainingSearchStrings = array_slice($searchStrings, 1);
+
+ $groupsQuery = "
+ SELECT
+ 'group' AS type,
+ gruppe_kurzbz AS name
+ FROM public.tbl_gruppe
+ WHERE LOWER(gruppe_kurzbz) LIKE '%" . $firstSearchString . "%'
+ ";
+
+ if (count($remainingSearchStrings)) {
+ foreach ($remainingSearchStrings as $remainingSearchString) {
+ $groupsQuery .= " AND LOWER(gruppe_kurzbz) LIKE '%" . $remainingSearchString . "%'";
+ }
+ }
+
+ $groupsQuery .= " LIMIT 25";
+
+ $dbModel = new DB_Model();
+ $groupsQueryResult = $dbModel->execReadOnlyQuery($groupsQuery);
+ // return getData($groupsQueryResult);
+
+ $groups = hasData($groupsQueryResult) ? getData($groupsQueryResult) : [];
+ if (!count($groups))
+ return $groups;
+
+ $groupNames = array_map(function ($group) {
+ return $group->name;
+ }, $groups);
+
+
+ $userGroupsQuery = "
+ SELECT
+ benutzerGruppe.uid as uid,
+ benutzerGruppe.gruppe_kurzbz as group,
+ person.vorname || ' ' || person.nachname AS name
+ FROM public.tbl_benutzergruppe benutzerGruppe
+ JOIN public.tbl_benutzer benutzer ON(benutzer.uid = benutzerGruppe.uid)
+ JOIN public.tbl_person person ON(person.person_id = benutzer.person_id)
+ WHERE gruppe_kurzbz IN ('" . implode("', '", $groupNames) . "')
+ ";
+ $userGroupsQueryResult = $dbModel->execReadOnlyQuery($userGroupsQuery);
+
+ $users = hasData($userGroupsQueryResult) ? getData($userGroupsQueryResult) : [];
+ if (!count($users))
+ return [];
+
+ $groupedUsers = [];
+
+ foreach ($users as $user) {
+ $userData = [
+ "uid" => $user->uid,
+ "name" => $user->name,
+ ];
+
+ $group = $user->group;
+
+ if (isset($groupedUsers[$group])) {
+ $groupedUsers[$group][] = $userData;
+ } else {
+ $groupedUsers[$group] = [$userData];
+ }
+ }
+
+ $groups = array_map(function ($group) use ($groupedUsers) {
+ $group->users = isset($groupedUsers[$group->name]) ? $groupedUsers[$group->name] : [];
+ return $group;
+ }, $groups);
+ $groups = array_filter($groups, function ($group) {
+ return count($group->users);
+ });
+ return $groups;
+ }
+
+}
diff --git a/public/js/api/factory/coodle.js b/public/js/api/factory/coodle.js
new file mode 100644
index 000000000..9bbc08537
--- /dev/null
+++ b/public/js/api/factory/coodle.js
@@ -0,0 +1,28 @@
+/**
+ * Copyright (C) 2025 fhcomplete.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see