Enable web services and web services documentation (enablewebservices and enablewsdocumentation) As admin go to Server>Web services>Documentation and make sure the page works Create a user and give them a capability 'moodle/webservice:createtoken' in the system context (either by creating and assigning a new role or adding this capability to an existing role of this user) Create a token for this user on Site administration>Server>Web services>Manage tokens Login as this user and navigate to your preferences and then click "Security keys" Make sure you can manage your security keys, click on "Documentation" link next to security key and make sure it works Modify the file admin/tool/policy/lib.php and add a function: function tool_policy_after_config() { global $CFG; require_once($CFG->dirroot.'/webservice/lib.php'); } Purge caches Open the "Security keys" page as a user, there should be no exceptions Click on Documentation link next to the key and make sure there are on exceptions there either As admin go to Server>Web services>Documentation and make sure the page works