Talked to @Zppix on IRC about this.

Currently .in [reminder] is the only command of the bot that I use. It would be nice to have a command to link to arbitrary phabricator objects and/or just tasks on phabricator.miraheze.org and/or other phabricator instances (this one?)

I imagine something along the lines of .phab F1 which would make the bot output just a link to https://phabricator.miraheze.org/F1 or .task 1111 which would output https://phabricator.miraheze.org/T1111

Not requesting that it verify a connection or make sure the phabricator object is valid. A simple text match with an appropriate URL would be totally acceptable. (But try not to kill the bot if I input some completely arbitrary string ;))