erm.. from what i see ..what you need may be iswm operator
on *:join:#: {
if (*gateway/web/* iswm $address($nick,2)) {
mode $chan +b $address($nick,2)
kick $chan $nick Sorry no IRCcloud users allowed :/
;how will you keep them out if you don't ban them? :S
 msg $nick Im sorry but IRC cloud users are NOT allowed into this channel

P.S if this intended for a common ircd and not twitch (which is edited and weird) you can ban this > *!*@gateway/web/* and it won't let any address that contains this join.

Last edited by OrFeAsGr; 08/07/15 09:38 PM.