API and libraries for Minecraft 1.21.3
Version:
All versions
- All
- 1.21.8
- 1.21.7
- 1.21.6
- 1.21.5
- 1.21.4
- 1.21.3
- 1.21.2
- 1.21.1
- 1.21
- 1.20.6
- 1.20.5
- 1.20.4
- 1.20.3
- 1.20.2
- 1.20.1
- 1.20
- 1.19.4
- 1.19.3
- 1.19.3
- 1.19.2
- 1.19.1
- 1.19
- 1.18.2
- 1.18.1
- 1.18
- 1.17.1
- 1.17
- 1.16.5
- 1.16.4
- 1.16.3
- 1.16.2
- 1.16.1
- 1.16
- 1.15.2
- 1.15.1
- 1.15
- 1.14.4
- 1.14.3
- 1.14.2
- 1.14.1
- 1.14
- 1.13.2
- 1.13.1
- 1.13
- 1.12.2
- 1.12.1
- 1.12
- 1.11.2
- 1.11.1
- 1.11
- 1.10.2
- 1.10.1
- 1.10
- 1.9.4
- 1.9.3
- 1.9.2
- 1.9.1
- 1.9
- 1.8.9
- 1.8.8
- 1.8.7
- 1.8.6
- 1.8.5
- 1.8.4
- 1.8.3
- 1.8.2
- 1.8.1
- 1.8
- 1.7.10
- 1.7.9
- 1.7.8
- 1.7.7
- 1.7.6
- 1.7.5
- 1.7.4
- 1.7.2
- 1.6.4
- 1.6.2
- 1.6.1
- 1.5.2
Cloth Config [1.20.2] [1.20.1] [1.19.4] [1.18.2] [1.16.5]
Cloth Config eliminates configuration clutter entirely. This essential library instantly generates a clean, highly customizable Graphical User Interface (GUI), making precise mod tuning incredibly efficient. Gain complete control over every parameter – from major toggles down to the minor details. The shift from painful file editing to rapid, intuitive customization ensures your modpack runs flawlessly and exactly as personalized.
MonoLib [1.20.2] [1.20.1] [1.19.4] [1.19.3] [1.19.3]
MonoLib operates as the ultimate, non-intrusive stealth champion for mod developers. This super-lean core library handles events, registries, commands, and callbacks without any bloat – it’s bulletproof across Fabric, Forge, and NeoForge. I dropped it into massive test packs, and it ran with zero drama: seamless integration, debugging zips by fast, and no conflicts. It’s a huge time-saver allowing you to focus on creativity instead of fixes. Reliability absolutely reigns supreme, delivering effortless pro vibes every time. Essential for crafting stable, seamless worlds – dev life just got drastically smoother!
Architectury API [1.21.11] [1.21.10] [1.21.9] [1.21.8] [1.21.7]
Architectury API is the ultimate modder lifeline, effectively bridging the chaos of Fabric, Forge, NeoForge, and Quilt. It packs over 90 killer event hooks, slick networking, registry wizardry, and loader calls that crush compatibility hell forever! I successfully mashed up rival mods that used to explode on contact, resulting in flawless sync across platforms with zero crashes. Boilerplate code is slashed to oblivion, letting modpacks and servers thrive without a single hitch. Events fire off like butter, making cross-loader development sane and speedy. Juggling loaders like a boss? This makes pro modding feel effortless and genius-level – it’s the essential glue for multiplatform dreams!
CreativeCore [1.21.5] [1.21.4] [1.21.3] [1.21.1] [1.20.1]
The kernel required for some modifications to work. Install only if the appropriate mods are available. If there are none, then there is no need for CreativeCore.
Item Tooltips [1.21.11] [1.21.10] [1.21.9] [1.21.8] [1.21.7]
Item Tooltips drops lore bombs on every hover – you get custom descriptions for any item via simple tags, plus full enchant breakdowns right in the tooltips and the enchanting table! I tagged modded weird items, and shift-holding reveals lines like, "Procs on death, dummy!" Wrapping keeps it tidy, and colors/prefixes are tweakable AF. Loot runs? Zero guessing, pure clarity rush. Pack makers, slap tips on easy – mod life is organized, savvy, and you'll be hooked on those whispers!
WorldEdit [1.20.2] [1.20.1] [1.19.4] [1.19.3] [1.16.5]
Plugin for Minecraft servers. Used when editing the world for bulk movement, creating, deleting or replacing blocks. It helps a lot when playing online and can be used for various game events.
iChunUtil [1.21.5] [1.20.2] [1.20.1] [1.19.4] [1.18.2]
iChunUtil is a simple auxiliary mod. It doesn't add anything new to your game, but it will be able to provide some mods with great functionality. These mods include mods such as Portal Gun, Gravity Gun, and others.
SuperMartijn642's Config Lib [1.20.2] [1.20.1] [1.19.4] [1.16.5] [1.12.2]
This is the silent must-have for anyone who tweaks mods. This library makes configuring other mods seamless – it’s intuitive, saves time, and nukes crashes. I tinkered with complex settings for huge packs and loved the stability. It doesn't change gameplay itself, but it enhances every modding experience by giving you a clean, approachable interface. You spend less time troubleshooting and more time conquering the game.
Puffish Attributes [1.21.11] [1.20.2] [1.20.1] [1.19.4] [1.18.2]
Puffish Attributes grants companions unique personalities via core stats. Tweaking health, speed, or charisma made each pet behave distinctly; I adapted my tactics to their strengths. Watching a favored companion survive a brutal fight was a genuine source of pride. It transforms pets from background fluff into strategic, emotionally attached partners, making survival runs feel gentler and unexpectedly engaging by forging powerful, unique bonds based on tactical utility and shared survival.
Puffish Skills [1.21.11] [1.20.2] [1.20.1] [1.19.4] [1.18.2]
Puffish Skills layers meaningful abilities onto companions – from strong passive buffs to flashy attacks – making the training process deeply impactful. I unlocked niche skills, tested complex synergies, and devised loadouts that perfectly complemented my fighting style. They instantly evolved from cute sidekicks into tactical, full-fledged teammates. The progression loop is simple and addictive: teach, test, tweak, triumph and the depth of customization ensures that no two companion loadouts ever feel exactly alike.
Not installed yet OneLauncher?
Download the launcher, install mods, skins and capes in one click. Play on any servers. And free skins and capes will make you stand out in the game among your friends!
Verified VirusTotal
Friendly Support
Have a question about the launcher or services? Contact us in our Telegram group. We will help you with any questions! We are in touch 24/7






