YUNG's API
by YUNG
A shared library required by all YUNG's Better mods, providing structure generation utilities and jigsaw helpers.
LibraryDownload YUNG's API
YUNG's API 1.21.1-NeoForge-5.1.8 sits on our own server, the build YUNG released on 2026-08-21, 0.4 MB. YUNG stays the author of YUNG's API, the file is only hosted here. It brings shared configuration system. Nothing is repacked, this API jar is YUNG's own build.
Download YungsApi-1.21.1-NeoForge-5.1.8.jarFor neoforge on Minecraft 1.21 and 1.21.1. SHA1 eb5757e5cb387553ed4d342e7aecf5b7dcb384a0 is the checksum of this API file. 1.21.1-NeoForge-5.1.8 is the API build number on this file. 2026-08-21 is the date YUNG put this API build out.
Overview
A shared library required by all YUNG's Better mods, providing structure generation utilities and jigsaw helpers. YUNG's API lists condition-based placement among its features. It brings structure generation utilities. It rates beginner to pick up. It is built for players installing any of YUNG's structure mods, which require it.
It is the shared library powering YUNG's Better Dungeons, Strongholds, Mineshafts, and more, so it is installed as their dependency. API counts 5 features across 12 versions. YUNG's API needs no companion mod. API belongs on both sides. API reaches 26.1.2.
YUNG's API 1.21.1-NeoForge-5.1.8 is downloadable here, 0.4 MB. It includes required by all yung mods. 2,504 people watch API for updates. It ships under LGPL. 18 other Library mods sit beside API.
YUNG tags YUNG's API as api, structures and yung. API spans 1.18.2 to 26.1.2. YUNG's API brings jigsaw piece helpers. 12 builds carry the API name. API lists condition-based placement too.
26.1.2 is the newest game version YUNG has signed off for YUNG's API, and 1 release has landed since. API counts 5 features across 12 versions. 1.18.2 is the oldest game version this API list reaches back to. Balm sits next to API under Library here. YUNG's API includes condition-based placement.
Mod Loaders
YUNG's API ships a separate build for each of Forge, Fabric and NeoForge. It needs one loader, API ignores the other. Our own API copy is the neoforge build. YUNG counts 12 published API builds.
Minecraft Versions
12 game versions carry YUNG's API, 1.18.2 at the oldest and 26.1.2 at the newest. A API jar built for another version will not load API. Every API jar targets one version, so API numbers do not swap. API reaches further than 116 mods here.
1.21.4, 26.1.1 and 26.1.2 are the newest game versions with a YUNG's API build. Your launcher version and the API jar version have to match. 1.18.2 and 1.19.2 are the oldest API builds, below 1.18.2 there is none. Each number exists per loader, so 36 API combinations in all.
Mods here that need YUNG's API
4 mods here will not load without YUNG's API. API has to match the same game version as the mod that asks for it. Installing API alone changes nothing; it is there for the mods above it. YUNG's Better Dungeons, YUNG's Better Mineshafts and YUNG's Better Ocean Monuments name API as a file they need.
Release history
YUNG has published 72 API builds, the first on 2022-11-28 and the newest on 2026-08-21. The date says when YUNG's API last moved, not how long it will keep working. 12 API builds went out in 2026. 72 of them are full releases, the rest are test builds of API.
| Build | Published | For | Downloads |
|---|---|---|---|
| 1.21.1-NeoForge-5.1.8 | 2026-08-21 | NeoForge · 1.21, 1.21.1 | 16K · 0.4 MB |
| 1.21.1-Forge-5.1.8 | 2026-08-21 | Forge · 1.21, 1.21.1 | 407 · 0.4 MB |
| 1.21.1-Fabric-5.1.8 | 2026-08-21 | Fabric · 1.21, 1.21.1 | 7K · 1.2 MB |
| 1.21.1-NeoForge-5.1.7 | 2026-08-19 | NeoForge · 1.21, 1.21.1 | 16K · 0.4 MB |
| 1.21.1-Fabric-5.1.7 | 2026-08-19 | Fabric · 1.21, 1.21.1 | 5K · 1.2 MB |
| 1.21.1-Forge-5.1.7 | 2026-08-19 | Forge · 1.21, 1.21.1 | 295 · 0.4 MB |
| 26.1.2-Fabric-6.1.2 | 2026-08-19 | Fabric · 26.1.1, 26.1.2 | 4K · 1.2 MB |
| 26.1.2-NeoForge-6.1.2 | 2026-08-19 | NeoForge · 26.1.1, 26.1.2 | 861 · 0.4 MB |
2026: 12 builds · 2025: 11 builds · 2024: 27 builds · 2023: 20 builds · 2022: 2 builds
Key Features
YUNG's API brings a focused set of features to the table. Highlights include structure generation utilities, plus jigsaw piece helpers, with the full list below.
- Structure generation utilities
- Jigsaw piece helpers
- Condition-based placement
- Shared configuration system
- Required by all YUNG mods
Tags
How to install YUNG's API
YUNG's API takes one of Forge, Fabric and NeoForge. Nothing else goes in with YUNG's API. 1.18.2 to 26.1.2 is the API range. API spans 1.18.2 to 26.1.2.
- 1Install Forge for the Minecraft version you want API on. Forge, Fabric and NeoForge each work for API, one at a time. YUNG's API lists 12 of them, 1.18.2 to 26.1.2. API counts 5 features across 12 versions.
- 2Nothing has to go in before YUNG's API. The YUNG's API page names its own requirements. No library is listed under API. YUNG's API includes condition-based placement.
- 3Drop YungsApi-1.21.1-NeoForge-5.1.8.jar into the mods folder. The server needs that same API file. 0.4 MB is the whole API file. The jar goes in whole, API unpacks nothing.
- 4Start the game and look for YUNG's API in the mods list. No API entry means the loader or the version is off. API loads on its own once the version matches. The log names the file when API refuses.
YUNG's API runs on 12 game versions, 1.18.2 to 26.1.2. Each API jar is built per version. 26.2 is 1 release past API. API lists 12 game versions.
See our full mod install guideCompatibility & alternatives
Forge, Fabric and NeoForge run API today. YUNG's API includes jigsaw piece helpers. API belongs on both sides. YUNG's API shares Library with 18 others. It stops at 26.1.2.
YUNG's API asks nothing of the rest of your pack. API counts 5 features across 12 versions. Architectury API and GeckoLib share the shelf with API. YUNG's API competes in Library. No shared library ties API down.
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