Create a course with a database using the image gallery preset Enrol a couple of users as teacher and student in that course As the student or teacher add a couple of entries to the database Then go to the Moodle database (not the module, I mean the mysql or postgres) and edit any of the records of the "data_content" table related to your database created at step 1. You must add something (any text) to the content3 and content4 fields Enable "Mobile services": Site administration ► Mobile app ► Mobile settings Create a Token in the mobile app service for the student in the course: Click on Site administration ► Plugins ► Web services ► Manage tokens Next, you can do a CURL REST call simulating a WS client with the student. You need to replace the wstoken, databaseid (database instance id) and the URL of your moodle instance curl 'http://localhost/m/stable_master/webservice/rest/server.php?moodlewsrestformat=json' --data 'databaseid=8&wsfunction=mod_data_get_entries&wstoken=12a2a65aeea2a177055e233f9e303218&moodlewssettingfilter=true' | python -m "json.tool" Now check that the WS works and returns the database entries you created.