TooltipRareness is a Minecraft mod which divides items into rareness groups and shows it as a tooltip.

TooltipRareness is a mod built for the Fabric Loader. It requires Fabric API and Cloth Config API to be installed separately;

TooltipRareness is licensed under MIT.

Modded items can get added to a rareness group via datapacks.
Check out for how to create a datapack here: Datapack Tutorial.
TooltipRareness adds 6 different rareness groups to minecraft:

• admin_item
• legendary_item
• epic_item
• rare_item
• uncommon_item
• common_item

Just create a json file called like one of the rareness groups and put it under
data/tooltiprareness/tags/items/YOURFILE
An example how the json file can look like is here:

{
    "replace": false,
    "values": [
        "minecraft:dragon_egg"
    ]
}