On Thu, Jun 14, 2012 at 02:33:18PM -0600, Henry Brausen wrote:
Is there a way to also fetch the time at which the user was added to those
groups?
I'm working specifically with Wikipedia.
Only by checking the relevant permissions logs. If it was done locally,
list=logevents with the right parameters should do it. If it was done by
the stewards on Meta, you'll probably have to query against
meta.wikimedia.org/w/api.php looking for "username@enwiki".