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Ace's Spell UtilsMinecraft mod for 1.21.1

A util API for making Iron's Spells and Spellbooks addons

client and servernewest supported release 1.21.1UtilityMagic
Latest version
1.2.7.5-1.21.1
Loaders
Forge, NeoForge
Licence
MIT
Downloads
188.3k
Updated
11 d ago
Available on
Modrinth
Space NodeOur hosting

Host Ace's Spell Utils servers

One click and Ace's Spell Utils is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Ace's Spell Utils declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

From Ace's Spell Utils’s own host. Nothing is re-hosted here.

Browse 34 indexed releases

Most recently published release

1.2.7.5-1.21.1release23 Oct 2026

aces_spell_utils-1.2.7.5-1.21.1.jar · 0.4 MB · for 1.21.1 · NeoForge

Download this release
b521273ca950…
Older versions24
  • 1.1.0-1.20.123 Oct 20261.20.10.2 MBc391e4f06156…Get
  • 1.0.0-1.20.122 Oct 20261.20.10.2 MB81c292eca991…Get
  • 1.2.7.4-1.21.111 Oct 20261.21.10.4 MB0150287f2e52…Get
  • 1.2.7.3-1.21.15 Oct 20261.21.10.4 MB2e0f1f64960e…Get
  • 1.2.7.2-1.21.12 Sept 20261.21.10.4 MB3c24a60fdf4d…Get
  • 1.2.7.1-1.21.119 Jul 20261.21.10.2 MB6.6k downloadsd27b6865f822…Get
  • 1.2.7.0-1.21.16 Jul 20261.21.10.2 MB8.7k downloads92e5669e853b…Get
  • 1.2.6.1-1.21.112 May 20261.21.10.2 MB29.3k downloads0237810c6f67…Get
  • 1.2.6-1.21.18 May 20261.21.10.2 MB2.5k downloads13f61ec93e8e…Get
  • 1.2.5-1.21.121 Mar 20261.21.10.2 MB19.4k downloadsfff1818320f8…Get
  • 1.2.4-1.21.119 Mar 20261.21.10.2 MB460 downloadsf4030de43b13…Get
  • 1.2.3-1.21.16 Feb 20261.21.10.2 MB19.3k downloads461607a8957d…Get
  • 1.2.2-1.21.129 Jan 20261.21.10.2 MB2.5k downloads90f44af4d1f9…Get
  • 1.2.1-1.21.115 Jan 20261.21.10.2 MB4.2k downloadsaaf12baa613a…Get
  • 1.2.0-1.21.115 Jan 20261.21.10.2 MB258 downloadsc9f4ea0ab3be…Get
  • 1.1.23-1.21.19 Jan 20261.21.10.2 MB3.7k downloads8c7dede33768…Get
  • 1.1.22-1.21.126 Dec 20251.21.10.2 MB3.5k downloads64c3e488938f…Get
  • 1.1.21-1.21.125 Dec 20251.21.10.2 MB367 downloads19e4a6dac355…Get
  • 1.1.20-1.21.119 Dec 20251.21.10.2 MB1.0k downloads6273aa989e99…Get
  • 1.1.19-1.21.15 Dec 20251.21.10.2 MB3.1k downloads777026a7c76b…Get
  • 1.1.18-1.21.17 Nov 20251.21.10.2 MB1.9k downloads9a2a8223ec52…Get
  • 1.1.17-1.21.118 Oct 20251.21.10.1 MB1.7k downloads60a60830a323…Get
  • 1.1.16-1.21.114 Oct 20251.21.10.1 MB692 downloadsce81d64c3e3a…Get
  • 1.1.15-1.21.114 Oct 20251.21.10.1 MB49 downloadsa68c613a562b…Get

Dependencies

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

Frequently asked

Does Ace's Spell Utils work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Ace's Spell Utils 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 Ace's Spell Utils support?

Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Ace's Spell Utils 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 Ace's Spell Utils support?

Forge, 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 Ace's Spell Utils?

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 does Ace's Spell Utils need to run?

It declares Iron's Spells 'n Spellbooks as required, so that has to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is Ace's Spell Utils 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 Ace's Spell Utils?

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 Ace's Spell Utils 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.

Used by

2 projects list Ace's Spell Utils as a required dependency.

Details from Modrinth, where the author last updated it on 23 Oct 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? .