IP ONLY MESSAGE:
Warning: You are unauthorized to use this site. Please leave the site.
OUT OF ARG NOTE: THIS MOD IS UNOFFICIAL AND IS UNRELATED TO OFFICIAL MOJANG.
(page permanently translated starting from this line [Google Translator])
This is an official mod made privately by Mojang. The mod leaked is leaked by persons. Site is unofficial. Do not use mod with bad purposes. Do unofficial. Name is Minecraft Dev Utils. Do not distribute.
The version can handle 1.20.1. The downloading hyperlink is available here. (It isn't put on Mediafire so it will not expire,)