When this mod is installed enchanted items will display a brief description of their enchantment effects in their tooltip.
Yes, it is possible for modded enchantments to work with this mod, and many mods already include support for this mod! If an enchantment description is not being displayed feel free to request support from me using the issue tracker.
This is a vanilla bug that only affects Fabric users. Affected players will need to download a mod like ToolTipFix which patches this bug for Fabric. Forge users will not experience this issue because Forge includes a built in fix for this bug.
The descriptions shown by this mod are taken from the localization map. Adding support for a new enchantment is as easy
as adding the expected entry to your localization file. The expected localization key format
is enchantment.%MOD_ID%.%ENCH_ID%.desc.