Monkeysphere should support authorized_keys options in authorized_user_ids files
OpenSSH allows users to control the capabilities granted to remote key-based logins by supplying options that should limit the use of the key.
For example, specifying no-pty means that sshd should not allocate a pseudo-terminal for sessions created based on an authentication with that key.
It is unclear if it is possible to do this sort of limiting in ~/.monkeysphere/authorized_user_ids, and if it is possible, how you'd actually do it.
(from redmine: created on 2008-12-28, closed on 2010-10-04)