Enable "Mobile services": Plugins ► Web Services ► External services Create a Token for the user (student) your are going to test with: Click on Site administration ► Plugins ► Web services ► Manage tokens Click add, select user and service (Mobile Service) Next, you can do a CURL REST call simulating a WS client: You need to replace the wstoken and the URL of your moodle instance curl 'http://localhost/m/stable_master/webservice/rest/server.php?moodlewsrestformat=json' -H 'Pragma: no-cache' -H 'Origin: file://' -H 'Accept-Encoding: gzip,deflate,sdch' -H 'Accept-Language: es,en;q=0.8,de-DE;q=0.6,de;q=0.4,nb;q=0.2' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1798.0 Safari/537.36' -H 'Content-Type: application/x-www-form-urlencoded; charset=UTF-8' -H 'Accept: application/json, text/javascript, */*; q=0.01' -H 'Cache-Control: no-cache' -H 'Cookie: MoodleSession=6jl8pbg3ndu6j70h4a56k0aea4' -H 'Connection: keep-alive' --data 'wsfunction=core_webservice_get_site_info&wstoken=1b9cc9f44630b554bb2c9428b8744338' --compressed Confirm that: You receive a new element in the json response "advancedfeatures", confirm that the settings values are the same than in the Moodle interface. http://localhost/m/stable_master/admin/settings.php?section=optionalsubsystems Do some changes in the Moodle interface, run again the client and check again that the values match. Tip: You can use this online tool: http://jsonlint.com/ for formatting the JSON response