What is it?
This is a Fabric modification that displays in item tooltips information about which specific mod added them to the game. The project was created under the influence of similar developments from vladmarica for Fabric and mezz for Forge. When I couldn't find a working version for Fabric 1.20.1, I decided to write my own implementation (and only then discovered that the source code was open).

I give credit to the original author of the Fabric modification; their project can be viewed here.
For this mod to work, the CroakLib library is required, which was also developed by me!