InSanity
This mod was created by community request, as the original Sanity mod doesn't provide the ability to check a player's current sanity level, and the only available command sets the complete value.
The main mod command: /adjustsanity amount [player name]
If the player name is not specified, the change is applied to the command executor. Positive floating-point values increase the sanity level, negative ones decrease it. When the command is executed for another player, the sender receives confirmation of successful execution.