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LoginAPI and libraries for Minecraft 1.21.1
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
Bundle API [1.21.1] [1.21]
Bundle API is the silent hero that vastly improves inventory handling for mods that use bundled items. I noticed fewer edge-case bugs and far smoother storage interactions in my big packs. It's highly technical but pays off for the player: less clutter, fewer drop losses, and cleaner workflows. For anyone building complex mod combinations, this backend helper reduces friction and improves overall playability by quietly ensuring that complex item management systems function reliably and efficiently.
Common Capabilities [1.21.4] [1.21.1] [1.21] [1.20.4] [1.20.1]
This mod improves the interaction of mods, which is possible thanks to the new Forge feature system. It doesn't provide any real new content, it just enhances existing interactions. The purpose of this mod is to provide standard features that are useful for different mods, without the mods being dependent on each other.
Forge MultiPart CBE [1.21.1] [1.20.1] [1.18.2] [1.16.5] [1.12.2]
The Forge Multipart library is required for the correct operation of some mods on Forge Multipart, it is available as open source for the ability to fit several objects or items in one block space in Minecraft.
Aaron [1.21.1]
The enigmatic observer has arrived. Aaron introduces a mysterious NPC that interacts in subtle, pattern-based ways. I found myself obsessively trying to crack his code; occasionally, he'd drop a cryptic hint or a rare item. Gameplay is enriched with deep curiosity and constant surprise. This mod is mandatory for players who value discovery, hidden lore, and thought-provoking depth. Having a sentient, unpredictable element in your world creates a lingering sense of mystery that makes you question every shadow and strange occurrence you encounter on your travels.
Patchouli [1.20.1] [1.19.4] [1.19.3] [1.16.5] [1.12.2]
An easy way to include documentation for content help. The Patchouli mod contains a library to support other add-ons with reference content. With it, you can create beautiful encyclopedias in your own design with any images. For mod creators, this is a convenient way to familiarize players with the content of the innovations and how they work. Any hints, guides and even a local wiki will always be at hand, which makes this package of files incredibly useful.
Accessories CC Layer [1.21.1] [1.21] [1.20.4] [1.20.1]
Accessories CC Layer is the invisible fix every skin-nerd and mod-junkie has been dreaming of! This tiny but mighty addon bridges the gap between the Accessories API and Custom Player Models (CPM), finally allowing your cosmetic layers to render correctly without those annoying texture glitches. I rigged up a complex character with 3D gear and capes, and bam – everything stayed perfectly synced during emotes and combat. It’s a total game-changer for roleplay and fashion, ensuring your custom look actually stays custom. Essential for 1.20.1 and 1.21.x packs where looking legendary is just as important as the grind. Style, saved!
U Team Core [1.20.1] [1.19.4] [1.18.2] [1.16.5] [1.12.2]
U Team is a renowned team that develops mods. Surely you have used a few mods from them, as it is quite popular in the modding community. Most recently, the team decided to make a gift to other users and released the U Team Core mod. This is a unique library that developers use to create mods, and now it is available for use absolutely free. The architecture of the mod is made in such a way that even a complete beginner will be able to create his own full-fledged modification easily.
Blueprint [1.21.1] [1.20.1] [1.20] [1.18.2] [1.16.5]
Okay, look–Blueprint isn't "fun" to play with because it doesn't do anything you can see. It’s just the technical glue for the Team Abnormals mods (like Autumnity or Neapolitan). But honestly, without it, those mods would probably crash your game or feel clunky. I think of it like the backend of a website–if it’s doing its job well, you won't even know it’s there. If you’re building a pack that’s supposed to feel like "Official Minecraft 2.0," you’re going to end up downloading this eventually.
JasonConfig (jsconfig) [1.21.1] [1.20.1]
Let’s be honest: if you're just playing the game, you don't even need to look at this–it’s a library mod. It basically swaps out Forge's standard config system for one powered by JSON, which is way more stable and doesn't freak out over things like empty lists. I’ve seen Forge configs break for the dumbest reasons, but this one handles complex stuff like Minecraft classes without a hitch. It’s a backend workhorse for versions like 1.20.1 and 1.21.1. If a mod you're using requires it, just toss it in your folder and forget it’s there.
Spell Engine [1.21.1] [1.21]
Spell Engine catapults you into wizard-god territory! This tool lets you craft data-driven spells and bind them to any weapon or tome. You can blast massive fireballs, freeze enemies with ice shards, or use wild triggers for teleportation, all with stunning visuals and particles. I’ve chained insane combos that explode in glorious chaos, even tweaking sounds for that perfect punch. The Creator API ensures casts remain unpredictable and badass. It's the supreme magic playground for everything from quick zaps to ritual mega-nukes. Trinket buffs amp the power; battles ignite endless adrenaline. Sling spells like a boss!
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