Structure Gel API (1.21.4, 1.20.1) Mod (1.21.11) – Shared Library

Available for:FabricForgeNeoForge

If your mod setup depends on structure-generation libraries, Structure Gel API is the kind of project that matters quietly: it is built to make creating structures easier for developers, especially when working with Minecraft's jigsaw system. The code is described as open source and documented, and the project has a long version range plus an active Modrinth listing to support its credibility.

Key Features

  • Jigsaw-focused API: Built specifically to make structure creation easier for developers using the jigsaw system.
  • Open and documented: The provided description states that the code is open source and documented.
  • Broad version coverage: Version data spans Minecraft 1.14.4 through 1.21.4.
  • Tracked public project: Modrinth data includes 3,639,923 downloads, a public GitLab source link, and an update date of 2025-01-26.

Screenshots

Structure Gel API screenshot 1 showing mod in action
Structure Gel API screenshot 2 showing mod in action
Structure Gel API screenshot 3 showing mod in action
Structure Gel API screenshot 4 showing mod in action
Structure Gel API screenshot 5 showing mod in action
Structure Gel API screenshot 6 showing mod in action
Structure Gel API screenshot 7 showing mod in action
Structure Gel API screenshot 8 showing mod in action

How to Install

  1. Choose the Structure Gel API file that matches your Minecraft version.
  2. Match it to the listed mod type for your setup: Forge, NeoForge, or Fabric.
  3. If your setup follows the provided requirements, make sure Minecraft Forge or NeoForge Installer is present as needed.
  4. Launch Minecraft with the same game version and loader combination.

Requirements

Requirement Details
Mod Loader NeoForge, Forge, Fabric
Dependencies Minecraft Forge; NeoForge Installer
Minecraft Version 1.21.4, 1.20.4, 1.20.1, 1.20, 1.19.4, 1.19.3, 1.19.2, 1.19.1, 1.19, 1.18.2, 1.18.1, 1.17.1, 1.16.5, 1.15.2, 1.14.4

Pros & Cons

Pros

  • Purpose-built for jigsaw-based structure creation.
  • Open-source, documented project with a public GitLab source link.
  • Very broad Minecraft version coverage in available information.
  • Strong Modrinth footprint with 3,639,923 downloads.

Cons

  • Positioned as a Library & API, so it is not a standalone content-heavy gameplay mod.
  • You need to match the correct Minecraft version and loader for your setup.
  • Modrinth lists the license as LicenseRef-All-Rights-Reserved.

Download

Minecraft VersionLoaderDownload Links
For Minecraft 1.19.3
Forge
For Minecraft 1.19.4
Forge
For Minecraft 1.20.1, 1.20
Forge
For Minecraft 1.20.4
NeoForge
For Minecraft 1.21.4
NeoForge

Always download mods from official sources to stay safe.

What's New

  • Updated for Minecraft 1.21.4.
  • Building Tool clone support now works across dimensions and players.
  • A GUI opening animation was added for the Building Tool.
  • Gel blocks received a backend rewrite from scratch.
  • Gel spreading now uses registered behaviors and restrictions, with distance measured from the initial source.

FAQ

What does Structure Gel API do?

It is designed to make creating structures easier for developers, specifically for projects that use Minecraft's jigsaw system. The project is listed under Library & API rather than as a content-focused mod.

What Minecraft versions are available for Structure Gel API?

The provided version data covers Minecraft 1.14.4 through 1.21.4. The download entries shown in the data include builds for 1.14.4, 1.15.2, 1.16.5, 1.17.1, 1.18.1, 1.18.2, 1.19, and 1.19.1.

Is Structure Gel API open source?

The description says the code is open source and documented, and the project links to a public GitLab source page. Modrinth also lists the license as LicenseRef-All-Rights-Reserved, so both pieces of project metadata are worth noting.

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