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Rutile

by Metallurgists of Create

Rutile is a NeoForge library that lets developers attach chemical compositions to items and fluids through datapacks.

NeoForgeClient and serverCustom license1.21.1

What it does

Rutile provides a Data Driven Chemical Compositions system, which lets datapack authors assign chemical compositions to items and fluids without writing Java code. Compositions are read from datapacks, so a modpack or a server can define its own materials. The Element Material API, built by Metallurgists of Create, is the base the system is written against. Client and server both need it, so every player on a server running Rutile must install it too. Files exist for NeoForge 1.21.1 only, with version 2.0.3 as the latest, released on 2026-10-02. The license is custom and the mod is not open source.

Key features

  1. Datapack-driven compositions

    Chemical compositions for items and fluids are defined in datapacks rather than in code.

  2. Element Material API

    The API underneath the mod is the Element Material API from Metallurgists of Create.

  3. Composition tooltips in JEI

    Tooltips show the details of each composition, and a JEI category lets players view them with more detail.

Compatibility

Latest build for each game version and loader.

1.21.12.0.3
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Optional 1

Just Enough Items (JEI)View Items and Recipes
Optional

Questions

Does Rutile need Just Enough Items?

No. Just Enough Items (JEI) is optional, and it adds the category that displays composition details.

Does Rutile have to be installed on both sides?

Yes. Servers that run it need every player to install it too.

Which game versions does Rutile support?

Rutile has files for 1.21.1 only, on NeoForge.

In the catalog

Rutile is one of 3,514 Library mods on ModsFinder, and one of 1,449 Library mods for NeoForge. 32,366 mods support Minecraft 1.21.1.

Library mods3,514NeoForge modsMods for 1.21.132,366

More from Metallurgists of Create

All projects
Create: TFMG Community Edition1.21.1

Similar mods

Cloth Config API1.14 – 26.3YetAnotherConfigLib (YACL)1.19 – 26.3Architectury API1.16.5 – 26.3Just Enough Items (JEI)1.8 – 26.3Geckolib1.12.2 – 26.3Forge Config API Port1.16 – 26.3

What the author says

For information on how you can utilise Rutile for your modpack/mod please visit our documentation! Rutile allows developers to assign chemical compositions to items or fluids through datapacks. The compositions will display in tooltips and can be viewed in more detail though our JEI category.
Metallurgists of Create, on the Modrinth page

Official listing

Owner
Metallurgists of Create
Published
2026-02-02
Updated on Modrinth
2026-10-02
Facts verified
2026-10-15

Tags

LibraryDecorationUtility
Open on ModrinthCompare