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Arc LibMinecraft mod for 26.2

Data driven action, reward, condition library.

client and servernewest supported release 26.2Library
Latest version
19.1.3
Minecraft
1.19.2 to 26.2
Java
Java 25+
Loaders
NeoForge, Forge, Fabric
Licence
Apache-2.0
Downloads
224.9k
Updated
2 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Arc Lib servers

One click and Arc Lib is installed with the right loader, on hardware built for it.

  • 26.2
  • NeoForge
  • Forge
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
26.2NeoForge, Forge, Fabric25+declared16 Jun 2026
26.1.2Fabric, NeoForge, Forge25+declared9 Apr 2026
26.1.1Forge, NeoForge, Fabric25+declared1 Apr 2026
26.1Forge, NeoForge, Fabric25+declared24 Mar 2026
1.21.11Forge, NeoForge, Fabric21+declared9 Dec 2025
1.21.9Forge, NeoForge, Fabric21+declared30 Sept 2025
1.21.8Fabric, Forge, NeoForge21+declared17 Jul 2025
1.21.7NeoForge, Forge, Fabric21+declared30 Jun 2025
1.21.6Fabric, NeoForge, Forge21+declared17 Jun 2025
1.21.5Forge, NeoForge, Fabric21+declared25 Mar 2025
1.21.1NeoForge, Forge, Fabric21+declared8 Aug 2024
1.21NeoForge, Forge, Fabric21+declared13 Jun 2024
1.20.1Fabric, NeoForge, Forge17+declared12 Jun 2023
1.19.2Forge, Fabric, NeoForge17+declared5 Aug 2022

Download

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

Browse 44 indexed releases

For Minecraft 26.2

Choose the loader you use before downloading.

  • Fabric

    21.2.7 · 3 Aug 2026 · arc-fabric-21.2.7.jar

    Get Fabric

  • NeoForge

    21.2.1 · 31 Jul 2026 · arc-neoforge-21.2.1.jar

    Get NeoForge

Most recently published release

19.1.3release12 Sept 2026

arc-19.1.3-fabric.jar · 0.7 MB · for 1.21.11 · Fabric

Download this release
171d303293ee…
Older versions24
  • 19.1.211 Sept 20261.21.1128 KBf354aed1fd01…Get
  • 21.2.73 Aug 202626.20.7 MB2778b0f1e49e…Get
  • 20.2.103 Aug 202626.1.20.7 MB63b675fafc18…Get
  • 21.2.61 Aug 202626.20.7 MB826f18965cb5…Get
  • 20.2.91 Aug 202626.1.20.7 MB82ea986bc197…Get
  • 20.2.81 Aug 202626.1.20.7 MB4db8d8279e8a…Get
  • 21.2.51 Aug 202626.20.7 MB04750163d8a8…Get
  • 21.2.41 Aug 202626.20.7 MB2367e9284aaf…Get
  • 20.2.71 Aug 202626.1.20.7 MB7f2b637af347…Get
  • 20.2.61 Aug 202626.1.20.7 MB968dfa7a949f…Get
  • 21.2.31 Aug 202626.20.7 MB958b238f1b82…Get
  • 21.2.21 Aug 202626.20.7 MB5c9bf7cb78fe…Get
  • 20.2.51 Aug 202626.1.20.7 MB164129ad6615…Get
  • 21.2.131 Jul 202626.20.7 MB52 downloads863598ee86c0…Get
  • 20.2.431 Jul 202626.1.20.7 MB6 downloads1a0359d93cfd…Get
  • 21.2.029 Jul 202626.20.7 MB2.1k downloads0110eb8275f5…Get
  • 20.2.314 Jun 202626.1.20.7 MB1.7k downloadsce6a28804caa…Get
  • 9.0.021 May 20261.21.1, 1.210.4 MB4.8k downloadsedb321b8fe71…Get
  • 20.2.227 Apr 202626.1.20.7 MB17.1k downloads8792bfdbbb1e…Get
  • 20.2.127 Apr 202626.1.20.7 MB16 downloads399fc537089e…Get
  • 20.2.027 Apr 202626.1.20.7 MB20 downloads252eace66a54…Get
  • 20.1.110 Apr 202626.1.2, 26.1.1, 26.10.6 MB502 downloads8064272bd60a…Get
  • 20.1.08 Apr 202626.1.1, 26.10.6 MB52 downloads89e3b8fb5da5…Get
  • 19.1.120 Feb 20261.21.110.7 MB31.1k downloadsc62ed36016c8…Get

Dependencies

What Arc Libdeclares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.

Architectury APIRequired. An intermediary api aimed to ease developing multiplatform mods.UI LibRequired. A user interface library for Minecraft modding.YAML ConfigRequired. Config library with GUI based on the YAML format.KnotRequired. Tie Fabric and NeoForge together. Knot a problem.

Frequently asked

Does Arc Lib work on Minecraft 26.2?

Yes. 26.2 is the newest Minecraft version Arc 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.

Which Minecraft versions does Arc Lib support?

Everything the author has declared, from 1.19.2 up to 26.2. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Arc 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 Arc Lib support?

NeoForge, Forge, Fabric. 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 Arc Lib?

Among the supported Minecraft releases above, the highest recorded requirement is Java 25 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What does Arc Lib need to run?

It declares Architectury API, UI Lib, YAML Config and Knot as required, so those have to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is Arc Lib under?

Apache-2.0, 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 Arc 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 Arc 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. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

GeckoLibA 3D animation library for entities, blocks, items, armor, and more!BookshelfAn open source library for other mods!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Used by

1 project lists Arc Lib as a required dependency.

Jobs+Adds 10 jobs to Minecraft. You can now add your own jobs!

Details from Modrinth, where the author last updated it on 12 Sept 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .