AntyKostka
by xqbk
AntyKostka saves a player's inventory layout and puts items back into the same slots with a single keypress on Fabric.
What it does
Saving covers the full inventory: hotbar, main inventory and off-hand. Pressing Ctrl with a layout saved first records where each item sits, and later the mod moves items back to those saved positions using a sequence of optimized clicks. This suits players preparing a boss fight, sorting building materials or keeping the hotbar clean, since items always return to the places they were assigned.
Chat messages confirm when a layout is saved and when it is restored, so the result is visible without opening a menu. The interface stays out of the way until it is needed. The project is open source under the MIT License and has public links for its source code and issue tracker.
Only a Fabric Loader install is required. The mod is placed in the mods folder of the Minecraft directory, and it is client-side only, so servers do not need it. Builds cover 1.21.1 – 1.21.11, with the latest Fabric file, 1.1, published for 1.21.11 on 2026-03-29.
Key features
Full layout save
Saves the whole inventory configuration, including hotbar, main inventory and off-hand, in one action.
Smart restoration
Moves items back into their saved positions using optimized click sequences rather than manual rearranging.
Real-time chat feedback
Chat notifications report saves and restorations as they happen.
Minimal controls
Keybinds are kept simple, and the interface does not stay on screen when it is not needed.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who rearrange their inventory often and want the same layout back without manual sorting. Single-player and multiplayer clients can both use it, since the mod runs on the client alone.
How it compares
Inventory Layout is a Fabric mod for 1.21.4, released under the Creative Commons Attribution 4.0 license and not open source. Kit Presets is a Fabric mod for 1.21.11, under All rights reserved and not open source. SafeSlot is server-side only, not open source, covers 1.20.1 – 1.21.11 and is under All rights reserved, so it runs on the server while players join without installing it. AntyKostka is client-side only, open source under the MIT License and covers 1.21.1 – 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| AntyKostka | Fabric | 1.21.1 – 1.21.11 | Client-side only | 2026-03-29 |
| Inventory Layout | Fabric | 1.21.4 | Client-side only | 2026-08-10 |
| Kit Presets | Fabric | 1.21.11 | Client-side only | 2026-05-18 |
| SafeSlot | Fabric | 1.20.1 – 1.21.11 | Server-side only | 2025-12-23 |
Questions
Does AntyKostka need Fabric API?
Does the server have to run AntyKostka?
How is a layout saved?
In the catalog
AntyKostka is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from xqbk
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What the author says
A professional-grade Fabric mod for saving, managing, and restoring your inventory layout with precision. 🚀 Whether you're preparing for a boss fight, organizing your building materials, or just keeping your hotbar clean, Anty-Kostka ensures your items are always exactly where they belong.
Official listing
- Modrinth page
- modrinth.com/mod/antykostka
- Owner
- xqbk
- Published
- 2026-03-26
- Updated on Modrinth
- 2026-03-29
- Facts verified
- 2026-10-15