Helpmebot now uses a flag-based access control system, and as such the commands that can be accessed are determined by which flags you have available to you.
Bear in mind that these flags can be granted to a hostmask, NickServ account, channel mode, or channel, and as such your "voiced" or "opped" status, or even the channel you are in might change the flags you have available to you at that time.
The currently-defined flags are listed below
Allows access to the w:WP:ACC commands, including !accstatus and !acccount
Access Control (A)
Allows changing the access control lists, and which flags users have
Allows learning and forgetting new learnt commands
Bot Information (B)
Provides information about the bot itself
Local configuration (c)
Allows changing the configuration of the bot within a single channel only
Global configuration (C)
Allows changing the configuration of the bot in any channel it is in
Allows use of the "fun" commands, such as !trout
Allows use of the information commands, which provide information which is publicly available
Bot Management (M)
Allows management of the bot
Allows access to commands which are highly sensitive
Allows access to commands which provide data which is slightly more sensitive, such as !whois, !fetchall, and !curl
Commands anyone can use
Allows re-enabling the fun commands in a channel where they have been disabled.