
mod
Mechanicals LibMinecraft mod for 1.21.1
Modding library
- Latest version
- 1.21.1-1.1.6
- Minecraft
- 1.21.1
- Java
- Java 21+
- Loader
- NeoForge
- Licence
- LGPL-3.0-only
- Downloads
- 460.6k
- Updated
- 2 mo ago
- Available on
- Modrinth
Host Mechanicals Lib servers
One click and Mechanicals Lib is installed with the right loader, on hardware built for it.
- 1.21.1
- NeoForge
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Minecraft versions
Every version Mechanicals Lib declares support for, newest first, with the Java runtime that version needs.
Download
From Mechanicals Lib’s own host. Nothing is re-hosted here.
mechanicals-1.21.1-1.1.6.jar · 1.9 MB · for 1.21.1
84bfcd2cbd06…Older versions19Hide older versions
- 1.21.1-1.1.512 Jul 20261.21.11.9 MB430 downloads
9e796fa8d8b0…Get - 1.21.1-1.1.421 Jun 20261.21.11.9 MB40.0k downloads
be7f33864ff4…Get - 1.21.1-1.1.321 Jun 20261.21.11.2 MB263 downloads
0a797386b057…Get - 1.21.1-1.1.214 Jun 20261.21.10.5 MB10.2k downloads
809378270854…Get - 1.21.1-1.1.114 Jun 20261.21.10.5 MB150 downloads
30baf610892f…Get - 1.21.1-1.1.015 Nov 20251.21.10.5 MB264.7k downloads
6638860a9273…Get - 1.21.1-1.0.1222 Jun 20251.21.10.5 MB101.9k downloads
26b7dba2ff36…Get - 1.21.1-1.0.1120 Jun 20251.21.10.5 MB1.3k downloads
5591b7f9f566…Get - 1.21.1-1.0.1013 Jun 20251.21.10.5 MB3.6k downloads
75ecb83dc75e…Get - 1.21.1-1.0.925 May 20251.21.10.4 MB8.5k downloads
030416488074…Get - 1.21.1-1.0.825 May 20251.21.10.4 MB114 downloads
1740766865f1…Get - 1.21.1-1.0.718 May 20251.21.10.4 MB3.4k downloads
3ea5d63c6f41…Get - 1.21.1-1.0.618 May 20251.21.10.4 MB321 downloads
0273ac87a83e…Get - 1.21.1-1.0.58 May 20251.21.10.3 MB3.5k downloads
73b5e889ec17…Get - 1.21.1-1.0.46 May 20251.21.10.3 MB500 downloads
e3ca1bd56c96…Get - 1.21.1-1.0.36 May 20251.21.10.3 MB125 downloads
6bea5642f098…Get - 1.21.1-1.0.26 May 20251.21.10.3 MB69 downloads
51aec79268fb…Get - 1.21.1-1.0.11 May 20251.21.10.2 MB115 downloads
a6a71a0a94e1…Get - 1.0.027 Apr 20251.21.10.2 MB273 downloads
0bff21bdc765…Get
Frequently asked
Does Mechanicals Lib work on Minecraft 1.21.1?
Yes. 1.21.1 is the newest Minecraft version Mechanicals Lib declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Do I need to install Mechanicals Lib on the client or the server?
Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.
Which platform or loader does Mechanicals Lib support?
NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Mechanicals Lib?
On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.
What licence is Mechanicals Lib under?
LGPL-3.0-only, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install Mechanicals Lib?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download Mechanicals Lib safely?
Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .

