This module provides an internal API (i.e. to other modules) to manage ‘hats’ for users in MUC rooms.

Hats (first defined in XEP-0317, currently deferred) are additional identifiers that can be attached to users in a group chat. For example in an educational context, you may have a ‘Teacher’ hat that allows students to identify their teachers.

Hats consist of a machine-readable unique identifier (a URI), and optionally a human-readable label.

This module provides ad-hoc commands for MUC service admins to add/remove hats to/from users in MUC rooms. It depends (automatically) on mod_muc_hats_api.


Component "" "muc"
  modules_enabled = { "muc_hats_adhoc" }


To successfully use the module you will need to use an XMPP client that is capable of sending commands to a specific host (e.g. via the service discovery browser in Gajim, Psi/Psi+ and other clients), and you’ll find the commands on the MUC host.

Also note that the display of hats in clients is currently non-existent, but will hopefully improve after XEP-0317 is resurrected or replaced.


With the plugin installer in Prosody 0.12 you can use:

sudo prosodyctl install --server= mod_muc_hats_adhoc

For earlier versions see the documentation for installing 3rd party modules