The fax network will be N clans that hold copies of N monsters, and one bot. You will be able to send a command to the bot, he will then get a copy of the monster you want and feed it to the fax in your clan. Only a few (trusted) players will get whitelists directly to the monster-holding clans.
This only requires giving FaxBot a whitelist to your clan, and sending a private message specifying a monster. The list of commands and monsters will probably be posted in GD as soon as it is ready.
Since you now have a message in clan chat when someone puts a fax, maybe it would be possible to send the command and monitor events for the message? I don't know how request queues will be handled by the bot yet, so you might need to wait 30 or 60 seconds depending on the number of demands made to the bot.
The bot is almost ready, and some clans are set up already, so we should know more soon.