Mjolnir commands

Mjolnir management room

Mjolnir listens for commands in the management room: #management:ubuntu.com
This room is private and only server moderators will be granted access to it.

Mjolnir commands

Print a list of commands

A comprehensive list of Mjolnir commands can be printed using the command below in the management room: #management:ubuntu.com

!mjolnir help

Commands to enable Mjolnir protection in rooms

This process is well described in this document: Matrix moderation: Official Rooms and Spaces process

Commands to moderate

Redacting user messages

Please note that redacting messages does not kick or ban a particular user, so they could continue their activity. In certain cases of spam waves, it might be beneficial to kick and ban as well as redacting.

Redact last 100 messages in a specific room

Command syntax

!mjolnir redact <user ID> [room alias/ID] [limit] 

Example

!mjolnir redact @user:ubuntu.com #room:ubuntu.com 100

Redact last 100 messages globally

Command syntax

!mjolnir redact <user ID> [limit] 

Example

!mjolnir redact @user:ubuntu.com 100

Mute user

You can easily mute or silence a user by setting their “powerlevel” negative.

Example

!mjolnir powerlevel @user:matrix.org -1 #room:ubuntu.com

Kick users

A kick removes a user from a room temporarily. This is not a permanent ban from the room.

Kick using moderation reports

With moderation reports, you can click on the kick button below a report. Mjolnir will take action and kick the user according to the details in the report.

Manual user kick from specific room

Command syntax

!mjolnir kick <glob> [room alias/ID] [reason]

Example

!mjolnir kick @user:ubuntu.com #room:ubuntu.com [spam]

Manual use kick from all protected rooms

Command syntax

!mjolnir kick <glob> [reason]

Example

!mjolnir kick @user:ubuntu.com spam

Ban users

A ban removes a user from a homeserver inefinitely. This is not a permanent ban from the room. This action is useful in case of repeat offenders or obvious bot spam action.

Ban using moderation reports

With moderation reports, you can click on the ban button below a report. Mjolnir will take action and ban the user according to the details in the report.

Manual user ban for Code of Conduct violations

Command syntax

!mjolnir ban <list shortcode> <user|room|server> <glob> [reason]

Example

!mjolnir ban coc user @user:ubuntu.com inappropriate and aggressive behavior

Manual user ban for spam

Command syntax

!mjolnir ban <list shortcode> <user|room|server> <glob> [reason]

Example

!mjolnir ban spam user @user:ubuntu.com spamming inappropriate messages

Ban servers

A server ban prevents users from an entire server to join the ubuntu.com homeserver. This is particularly useful to block spam waves, when hundreds of users are created on the same homeserver.

Command syntax

!mjolnir ban <list shortcode> <user|room|server> <glob> [reason]

As you probably guessed, you are not going to ban a user but a server this once. For example, to ban the maliciousdomain.tld domain:

Example

!mjolnir ban spam server randomserver.org

Full list of commands

!mjolnir                                                            - Print status information
!mjolnir status                                                     - Print status information
!mjolnir status protection <protection> [subcommand]                - Print status information for a protection
!mjolnir ban <list shortcode> <user|room|server> <glob> [reason]    - Adds an entity to the ban list
!mjolnir unban <list shortcode> <user|room|server> <glob> [apply]   - Removes an entity from the ban list. If apply is 'true', the users matching the glob will actually be unbanned
!mjolnir redact <user ID> [room alias/ID] [limit]                   - Redacts messages by the sender in the target room (or all rooms), up to a maximum number of events in the backlog (default 1000)
!mjolnir redact <event permalink>                                   - Redacts a message by permalink
!mjolnir kick <glob> [room alias/ID] [reason]                       - Kicks a user or all of those matching a glob in a particular room or all protected rooms
!mjolnir rules                                                      - Lists the rules currently in use by Mjolnir
!mjolnir rules matching <user|room|server>                          - Lists the rules in use that will match this entity e.g. `!rules matching @foo:example.com` will show all the user and server rules, including globs, that match this user
!mjolnir sync                                                       - Force updates of all lists and re-apply rules
!mjolnir verify                                                     - Ensures Mjolnir can moderate all your rooms
!mjolnir list create <shortcode> <alias localpart>                  - Creates a new ban list with the given shortcode and alias
!mjolnir watch <room alias/ID>                                      - Watches a ban list
!mjolnir unwatch <room alias/ID>                                    - Unwatches a ban list
!mjolnir import <room alias/ID> <list shortcode>                    - Imports bans and ACLs into the given list
!mjolnir default <shortcode>                                        - Sets the default list for commands
!mjolnir deactivate <user ID>                                       - Deactivates a user ID
!mjolnir protections                                                - List all available protections
!mjolnir enable <protection>                                        - Enables a particular protection
!mjolnir disable <protection>                                       - Disables a particular protection
!mjolnir config set <protection>.<setting> [value]                  - Change a protection setting
!mjolnir config add <protection>.<setting> [value]                  - Add a value to a list protection setting
!mjolnir config remove <protection>.<setting> [value]               - Remove a value from a list protection setting
!mjolnir config get [protection]                                    - List protection settings
!mjolnir rooms                                                      - Lists all the protected rooms
!mjolnir rooms add <room alias/ID>                                  - Adds a protected room (may cause high server load)
!mjolnir rooms remove <room alias/ID>                               - Removes a protected room
!mjolnir rooms setup <room alias/ID> reporting                      - Setup decentralized reporting in a room
!mjolnir move <room alias> <room alias/ID>                          - Moves a <room alias> to a new <room ID>
!mjolnir directory add <room alias/ID>                              - Publishes a room in the server's room directory
!mjolnir directory remove <room alias/ID>                           - Removes a room from the server's room directory
!mjolnir alias add <room alias> <target room alias/ID>              - Adds <room alias> to <target room>
!mjolnir alias remove <room alias>                                  - Deletes the room alias from whatever room it is attached to
!mjolnir resolve <room alias>                                       - Resolves a room alias to a room ID
!mjolnir since <date>/<duration> <action> <limit> [rooms...] [reason] - Apply an action ('kick', 'ban', 'mute', 'unmute' or 'show') to all users who joined a room since <date>/<duration> (up to <limit> users)
!mjolnir shutdown room <room alias/ID> [message]                    - Uses the bot's account to shut down a room, preventing access to the room on this server
!mjolnir powerlevel <user ID> <power level> [room alias/ID]         - Sets the power level of the user in the specified room (or all protected rooms)
!mjolnir make admin <room alias> [user alias/ID]                    - Make the specified user or the bot itself admin of the room
!mjolnir help                                                       - This menu

Reference Articles

Matrix documentation: moderating communities
Moderator’s guide to Mjolnir (Bot edition)