Simulate external access to the service using the web service test client. Before doing so, log in as a user with the moodle/webservice:createtoken capability and obtain the security key (token) via the user's preferences page. You will use this token in the test client. In the test client, also choose an enabled protocol with the token authentication. <strong>WARNING: The functions that you test WILL BE EXECUTED for this user, so be careful what you choose to test!</strong>