ModsFinder

Structure Gel API

by Modding Legacy

Structure Gel API gives mod developers a set of tools for building jigsaw-generated structures, along with a creative-only Building Tool for large block edits.

ForgeNeoForgeClient and serverAll rights reserved1.16.5 – 26.1.2

What it does

The API targets developers who build generated structures with the jigsaw system and aims to reduce the work involved. Its code is documented, and detailed usage notes are organized by Minecraft version. Structure Gel is required by 10 other mods, including Aether: Lost Content Addon, Blue Skies, The Conjurer, Dungeons Enhanced and Dungeons Plus.

Structure Gel runs on Forge and NeoForge and needs both the server and every player to have it, since it is a client and server environment. Its builds cover 1.16.5 – 26.1.2 across 8 release versions, with the latest Forge file at 2.16.2 for 1.20.1 and the latest NeoForge file at 2.22.0 for 26.1.2. The mod is released under All rights reserved and is not open source, although public links to its source code and issue tracker exist. It was first published on 2023-05-21 and last updated on 2026-09-10.

Key features

  1. Building Tool

    A creative-mode-only item that performs large-scale block alterations across a selected area.

  2. Radial mode menu

    A radial menu selects which Building Tool mode is active, and modes with extra options show those settings below the undo and redo buttons.

  3. Gel blocks for structures

    Gel blocks are replaced with air when a structure generates, so the interior of a build can be filled without leaving natural terrain behind.

  4. Gel spreading variants

    Sneak-placing gel triggers a spreading mechanic, and each gel colour spreads differently, from cardinal-only spread to diagonal, sky-avoiding or single-plane behaviour.

  5. Chain removal

    Gunpowder removes a gel block and every connected gel of the same type in one chain reaction.

Compatibility

Latest build for each game version and loader.

26.1.2Not available2.22.0
1.21.4Not available2.20.0
1.20.4Not available2.19.1
1.20.12.16.22.16.2
1.19.42.12.0Not available
1.19.22.7.3Not available
1.18.22.4.8Not available
1.16.51.7.8Not available
ReleaseBetaAlphaNot available

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

Required by 10 mods

Aether: Lost Content Addon1.12.2 – 1.20.1Blue Skies1.16.5 – 1.20.4The Conjurer1.16.4 – 26.1.2Dungeons Enhanced1.16.5 – 26.1.2Dungeons Plus1.16.5 – 26.1.2The Farlanders1.16.4 – 26.1.2

Questions

Does Structure Gel need to be installed on both sides?

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

Which loaders does Structure Gel support?

Structure Gel is published for Forge and NeoForge only.

Where is the Building Tool found?

It is in the Structure Items creative mode tab and is usable only in creative mode.

In the catalog

Structure Gel API is one of 36,990 Utility mods on ModsFinder, and one of 14,575 Utility mods for Forge. 15,189 mods support Minecraft 26.1.2.

Utility mods36,990Forge modsMods for 26.1.215,189

More from Modding Legacy

All projects
Aether: Lost Content Addon1.12.2 – 1.20.1Blue Skies1.16.5 – 1.20.4The Conjurer1.16.4 – 26.1.2Dungeons Plus1.16.5 – 26.1.2Lucent1.16.5 – 26.1.2Scuba Gear1.16.5 – 1.20.4

Similar mods

Reese's Sodium Options1.16.5 – 26.3Jade 🔍1.16.4 – 26.3Zoomify (Zoom)1.18 – 26.3FancyMenu1.12 – 26.3Controlling1.7.10 – 26.3Euphoria Patches1.7.10 – 26.3

What the author says

An API for simplifying the developer end of creating generated structures. Structure Gel is an API mod designed to make creating structures easier on the developers, specifically ones using the jigsaw system. All code is open source and documented.
Modding Legacy, on the Modrinth page

Official listing

Owner
Modding Legacy
Published
2023-05-21
Updated on Modrinth
2026-09-10
Facts verified
2026-10-15

Tags

UtilityWorld generation
Open on ModrinthCompare