API:User group membership

Token
To change a user's group membership, a user rights token is required. This token is not equal to the edit token: it depends on the name of the user whose rights are being changed. A user rights token can be obtained as follows:

Adding users to and removing them from groups
Users can be added to groups or removed from them with action=userrights.

Parameters

 * : The name of the user whose rights you want to change.
 * : The token obtained in the previous request. Take care to urlencode the '+' as '%2B'.
 * : A pipe-separated list of groups you want to add the user to. Groups you're not allowed to add and groups the user is already in will be silently ignored
 * : A pipe-separated list of groups you want to remove the user from. Groups you're not allowed to remove and groups the users isn't in will be silently ignored
 * : Reason for the change (optional).

Sample request
Note: In this example, all parameters are passed in a GET request just for the sake of simplicity. However, action=userrights requires POST requests; GET requests will cause an error.

NOTE: If you don't have permission to add/remove users to/from groups, you'll get a result with empty  and   tags rather than an error message, because all the groups you specified were silently ignored.

Possible errors
All errors are formatted as: