Menu

mod

Fly's config libMinecraft mod for 1.21.11

Simplest JSON config lib to not repeat yourself :P

client and servernewest supported release 1.21.11Library
Latest version
1.2.0
Minecraft
1.20 to 1.21.11
Java
Java 21+
Loaders
NeoForge, Forge, Fabric
Licence
MIT
Downloads
1.1k
Updated
3 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Fly's config lib servers

One click and Fly's config lib is installed with the right loader, on hardware built for it.

  • 1.21.11
  • NeoForge
  • Forge
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Fly's config lib declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.11NeoForge, Forge, Fabric21+declared9 Dec 2025
1.21.10Fabric, NeoForge, Forge21+declared7 Oct 2025
1.21.9Forge, NeoForge, Fabric21+declared30 Sept 2025
1.21.8Forge, NeoForge, Fabric21+declared17 Jul 2025
1.21.7Forge, NeoForge, Fabric21+declared30 Jun 2025
1.21.6Forge, NeoForge, Fabric21+declared17 Jun 2025
1.21.5Forge, NeoForge, Fabric21+declared25 Mar 2025
1.21.4Forge, NeoForge, Fabric21+declared3 Dec 2024
1.21.3Fabric, Forge, NeoForge21+declared23 Oct 2024
1.21.2NeoForge, Forge, Fabric21+declared22 Oct 2024
1.21.1Fabric, NeoForge, Forge21+declared8 Aug 2024
1.20.6Forge, NeoForge, Fabric21+declared29 Apr 2024
1.20.5Forge, NeoForge, Fabric21+declared23 Apr 2024
1.20.4NeoForge, Forge, Fabric17+declared7 Dec 2023
1.20.3NeoForge, Forge, Fabric17+declared4 Dec 2023
1.20.2Fabric, NeoForge, Forge17+declared20 Sept 2023
1.20.1Forge, NeoForge, Fabric17+declared12 Jun 2023
1.20Forge, Fabric, NeoForge17+declared2 Jun 2023

Download

From Fly's config lib’s own host. Nothing is re-hosted here.

Most recently published release

1.2.0release5 Aug 2026

flysconfiglib-fabric-1.21.1-1.2.0.jar · 20 KB · for 1.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +6 more · Fabric

Download this release
e4468c3d7eb4…
Older versions1
  • 1.1.018 Mar 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +2 more18 KB634 downloads9b5d37ed8e77…Get

Frequently asked

Does Fly's config lib work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version Fly's config 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 Fly's config lib support?

Everything the author has declared, from 1.20 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Fly's config 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 Fly's config 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 Fly's config lib?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is Fly's config lib under?

MIT, 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 Fly's config 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 Fly's config 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!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.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Details from Modrinth, where the author last updated it on 5 Aug 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? .