
AntiFirmament
Removes the dreadful packet Firmament attempts to send to servers (e.g., Hypixel), which shows your mod IDs when Fabric itself doesn't.
⬇ Download on ModrinthAntiFirmament
because privacy matters
This mod attempts to block the ModAnnouncer packet the mod Firmament attempts to send while joining servers.
This is NOT normal Fabric behavior - as only Forge has a mod announcer built in, and personally I don't see a need for one to exist in Fabric. No server is required to see my mod's folder (MOD IDs) and no singular mod should be sending this information out without prior consent/knowledge.
License
I am a catboy; therefore, everything is open source. Feel free to skid this 52 different times, I really don't care. If it breaks dm me on discord - @axle.coffee or open a github issue or fix it yourself and open a PR MY code is licensed under MIT
The logo is a derivative of the Firmament logo by ic22487 located here which is licensed under CC-BY-4.0 and was modified by me to have an X over it. The original author of the image, the contributors and code owners of FirmamentMC do not endorse this project.
I (Axle) and AntiFirmament do not intend to cause any tarnishment to the reputation of FirmamentMC and the creator of the logo - it's simply an easy way to convey "hey this blocks something of Firmament" meow~
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 26.1.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as antifirmament-fabric-1.0.1-26.1.2.jar — drop this file into the mods folder
- Download size: 650 KB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.