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Mechanicals LibMinecraft mod for 1.21.1

Modding library

client and servernewest supported 1.21.1Library
Latest version
1.21.1-1.1.6
Minecraft
1.21.1
Loader
NeoForge
Licence
LGPL-3.0-only
Downloads
460.6k
Updated
2 mo ago
Available on
Modrinth
Space NodeOur hosting

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
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Mechanicals Lib declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From Mechanicals Lib’s own host. Nothing is re-hosted here.

1.21.1-1.1.6release12 Jul 2026

mechanicals-1.21.1-1.1.6.jar · 1.9 MB · for 1.21.1

Download latest
84bfcd2cbd06
Older versions19
  • 1.21.1-1.1.512 Jul 20261.21.11.9 MB430 downloads9e796fa8d8b0Get
  • 1.21.1-1.1.421 Jun 20261.21.11.9 MB40.0k downloadsbe7f33864ff4Get
  • 1.21.1-1.1.321 Jun 20261.21.11.2 MB263 downloads0a797386b057Get
  • 1.21.1-1.1.214 Jun 20261.21.10.5 MB10.2k downloads809378270854Get
  • 1.21.1-1.1.114 Jun 20261.21.10.5 MB150 downloads30baf610892fGet
  • 1.21.1-1.1.015 Nov 20251.21.10.5 MB264.7k downloads6638860a9273Get
  • 1.21.1-1.0.1222 Jun 20251.21.10.5 MB101.9k downloads26b7dba2ff36Get
  • 1.21.1-1.0.1120 Jun 20251.21.10.5 MB1.3k downloads5591b7f9f566Get
  • 1.21.1-1.0.1013 Jun 20251.21.10.5 MB3.6k downloads75ecb83dc75eGet
  • 1.21.1-1.0.925 May 20251.21.10.4 MB8.5k downloads030416488074Get
  • 1.21.1-1.0.825 May 20251.21.10.4 MB114 downloads1740766865f1Get
  • 1.21.1-1.0.718 May 20251.21.10.4 MB3.4k downloads3ea5d63c6f41Get
  • 1.21.1-1.0.618 May 20251.21.10.4 MB321 downloads0273ac87a83eGet
  • 1.21.1-1.0.58 May 20251.21.10.3 MB3.5k downloads73b5e889ec17Get
  • 1.21.1-1.0.46 May 20251.21.10.3 MB500 downloadse3ca1bd56c96Get
  • 1.21.1-1.0.36 May 20251.21.10.3 MB125 downloads6bea5642f098Get
  • 1.21.1-1.0.26 May 20251.21.10.3 MB69 downloads51aec79268fbGet
  • 1.21.1-1.0.11 May 20251.21.10.2 MB115 downloadsa6a71a0a94e1Get
  • 1.0.027 Apr 20251.21.10.2 MB273 downloads0bff21bdc765Get

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.

Last checked 2 mo ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .