admin guide

This guide provides basic management, configuration and troubleshooting tips for mudpy administrators.

admin accounts

Either create an account named admin or modify the main configuration file (for example, etc/mudpy.yaml) and change the .mudpy.limit.admins list to include the name of your initial admin user. Once you have at least one administrative user, that user can so something like set account.someuser administrator True to elevate another account’s access. It’s probably best to empty or remove the .mudpy.limit.admins list from the configuration before making the service publicly accessible.

While the service isn’t running you can also edit the accounts.yaml file (probably data/accounts.yaml unless you’ve changed the default data path) and add a line like account.someuser.administrator: true for any already existing account in that file. In future, a separate system command-line utility may be provided to make pre-seeding administrator accounts possible at time of installation so that the service doesn’t need to be started with an initially insecure configuration.

content creation

Once you’ve created and awakened an avatar for an an administrator, you can use the interactive command-line interface to create or destroy elements and set or delete facets on them. A set of sample elements are available in the source tree and included by default from the sample configuration file (specified in its _load list). You can also just edit those files with a text editor or create a new directory with your own YAML file in it to load instead.

See the built-in help as an administrator for the create, destroy, set and delete commands. For example, you can set an arbitrary value on a facet of any element like:

set account.someuser myperm True

This would add or update a myperm facet to the account element for the someuser user to have the value True.


The administrative show command provides a number of useful inspection tools. Here’s an example testing with the evaluate debug command from an active session with a couple of avatars awake, comparing with the output from related show group and show element invocations:

> show group actor

These are the elements in the "actor" group:


> evaluate actor.universe.groups['actor'].keys()

dict_keys(['avatar_admin_0', 'avatar_luser0_0'])

> show element actor.avatar_luser0_0

These are the properties of the "actor.avatar_luser0_0" element (in

   gender: female
   inherit: ['archetype.avatar', '']
   location: area.0,0,0
   name: Keyo

> evaluate actor.universe.contents['actor.avatar_luser0_0'].get('name')


Note that for safety the evaluate executes within the context of a command handler with limited Python __builtins__, the mudpy library package, and the active universe available, and also blocks evaluation of any statement containing double-underscores (__) as well as lambda functions. For admins to gain access to unsafe debugging commands, the .mudpy.limit.debug option must be enabled in configuration first and the service reloaded or restarted. It should still be considered unsafe, since the engine’s file handling functions could easily alter accessible files or expressions like 9**9**9 could be used to hang the service for indeterminate periods.