Note: Version number is bumped because a new web service is added into the Mobile app service. Create a new course Access to the course participants page via the navigation block As a teacher or admin, check that in the Report / Logs you see the "User list viewed" actions for the current user. As admin, enable "Mobile services": Plugins ► Web Services ► External services Create a Token for the user (not admin): Click on Site administration ► Plugins ► Web services ► Manage tokens Next, you can do a CURL REST call simulating a WS client with the student user . You need to replace the wstoken, courseid and the URL of your moodle instance curl 'http://localhost/m/stable_master/webservice/rest/server.php?moodlewsrestformat=json' --data 'courseid=4&wsfunction=core_user_view_user_list&wstoken=a70d553bbaf6d9b260a9e5c701b3c46e' Confirm that You can see new entries in the course log (User list viewed) for that course and the user. The origin for the new log entries is "ws" If you change courseid to an non-existent course you got an error If you change courseid to a course where you are not enrolled you got an error