Menu

mod

Custom Tooltip APIMinecraft mod for 1.21.1

Data-driven tooltip text creation.

client onlynewest supported release 1.21.1UtilityEquipmentLibrary
Latest version
5.2.1+1.21.1
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Fabric, Forge, NeoForge
Licence
MIT
Downloads
246.1k
Updated
18 d ago
Available on
Modrinth

Screenshots

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

Minecraft versions

Every version Custom Tooltip API declares support for, newest first, with the Java runtime that version needs.

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

Download

From Custom Tooltip API’s own host. Nothing is re-hosted here.

Browse 26 indexed releases

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • Fabric

    5.2.1+1.21.1 · 19 Oct 2026 · custom_tooltip_api-fabric-5.2.1+1.21.1.jar

    Get Fabric

  • NeoForge

    5.1.1+1.21.1 · 9 Sept 2026 · custom_tooltip_api-neoforge-5.1.1+1.21.1.jar

    Get NeoForge

Most recently published release

5.2.1+1.21.1release19 Oct 2026

custom_tooltip_api-fabric-5.2.1+1.21.1.jar · 0.2 MB · for 1.21.1 · Fabric

Download this release
8ca73d7d48b3…
Older versions24
  • 5.2.1+1.20.119 Oct 20261.20.10.2 MB03816454f41c…Get
  • 5.2.0+1.21.130 Sept 20261.21.10.2 MB79788624681e…Get
  • 5.2.0+1.20.130 Sept 20261.20.10.2 MBe2c3067b4164…Get
  • 5.1.1+1.21.19 Sept 20261.21.10.2 MB93ec49222fff…Get
  • 5.1.1+1.20.19 Sept 20261.20.10.2 MBd17a5072e49b…Get
  • 5.1.0+1.21.125 Aug 20261.21.10.2 MB8b9f92e24782…Get
  • 5.1.0+1.20.125 Aug 20261.20.10.2 MBfc4c8ca91dc7…Get
  • 5.0.2+1.21.122 Jul 20261.21.10.2 MB10 downloads974337df68f7…Get
  • 5.0.2+1.20.122 Jul 20261.20.10.2 MB2 downloads70d08a067bb5…Get
  • 5.0.1+1.20.122 Jul 20261.20.10.2 MB2 downloads19deca5be143…Get
  • 5.0.0+1.21.118 Jul 20261.21.10.2 MB5 downloads0b78a83f9a23…Get
  • 5.0.0+1.20.117 Jul 20261.20.10.2 MB4 downloads2a7fea0f57ce…Get
  • 4.0.1+1.20.121 Jun 20261.20.10.2 MB6 downloadsa01f2a953670…Get
  • 4.0.1+1.21.121 Jun 20261.21.10.2 MB14 downloads616993a669fa…Get
  • 4.0.018 Jun 20261.21.10.2 MB10 downloads23547ea31546…Get
  • 3.3.01 Jun 20261.21.10.2 MB9 downloads4b1ddd05024a…Get
  • 3.2.031 May 20261.20.10.2 MB9 downloads5d9d575847f3…Get
  • 3.1.013 May 20261.20.10.2 MB21 downloads10bfdf115376…Get
  • 3.0.06 May 20261.20.10.2 MB12 downloads0c094f99a551…Get
  • 2.0.026 Apr 20261.20.164 KB18 downloads13298a9757cc…Get
  • 1.2.214 Apr 20261.20.155 KB26 downloadsdba8b5eb2623…Get
  • 1.2.113 Apr 20261.20.155 KB15 downloadse400b2efc594…Get
  • 1.2.012 Apr 20261.20.155 KB14 downloads3d5c698f5cee…Get
  • 1.1.011 Apr 20261.20.145 KB18 downloads16bb0362e7e9…Get

Dependencies

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

Mod MenuRequired. Adds a mod menu to view the list of mods you have installed.YetAnotherConfigLib (YACL)Required. A builder-based configuration library for Minecraft!S-LibRequired. An easy to use config and utility library.

Frequently asked

Does Custom Tooltip API work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Custom Tooltip API 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 Custom Tooltip API 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 Custom Tooltip API on the client or the server?

The client only. There is nothing to install on the server side. That is the author's declared design, not a guarantee for every server: one running anti-cheat or missing a counterpart mod can still object.

Which platform or loader does Custom Tooltip API support?

Fabric, 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 Custom Tooltip API?

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 Custom Tooltip API need to run?

It declares Mod Menu, YetAnotherConfigLib (YACL) and S-Lib 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 Custom Tooltip API 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 Custom Tooltip API?

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 Custom Tooltip API 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.

Details from Modrinth, where the author last updated it on 19 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? .