Attribute Reflex
by NotRealJay
Attribute Reflex is a Fabric utility that swaps armor and tools automatically as the player's surroundings change, without manual inventory management.
What it does
When the player moves between environments, the mod reacts to the change in the world and swaps the relevant gear. Entering water switches to boots with Depth Strider and returns the original boots once the player steps back onto land. A long fall pulls an Elytra from the inventory and equips it, then restores the chestplate after the player touches the ground. Block detection works in a similar way: when the player looks at a block, the mod selects the most efficient tool for that block in the active hotbar slot.
Attribute Reflex runs on Fabric and requires Fabric API. It is client-side only, so servers run without it and players install it alone. Builds cover 1.21.1 – 1.21.11, with 1.0.0 for 1.21.11 as the latest file. The mod is released under the MIT License and is not open source.
Key features
Automatic boot swapping
Depth Strider boots go on when the player enters water and the original boots return on land.
Elytra and chestplate swap
A long fall equips an Elytra from the inventory, and the chestplate is restored after landing.
Tool selection by block
Looking at a block selects the most efficient tool for it in the active hotbar slot.
Lightweight design
The mod is built on Fabric API with a focus on minimal impact on frame rate and tick rate.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x11 of 11 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Survival play
Players who move between water, land and open air can keep the right gear equipped without opening the inventory.
Optimized modpacks
Modpack builders who want less manual gear handling can add the mod alongside Fabric API.
Who it’s for: Players on Fabric who want armor and tools swapped without manual inventory work. Modpack authors who need a lightweight utility on the client side.
How it compares
No Item Swap Animation is a Fabric client-side mod for 1.21.11 under the MIT License, and it is not open source. AeroSwap is also a Fabric client-side mod for 1.21.11 under the MIT License, and it is open source. SwapMyAxe is a Fabric client-side mod for 1.21.10 under the GNU General Public License v3.0 only, and it is open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Attribute Reflex | Fabric | 1.21.1 – 1.21.11 | Client-side only | 2026-03-31 |
| No Item Swap Animation | Fabric | 1.21.11 | Client-side only | 2026-06-11 |
| AeroSwap | Fabric | 1.21.11 | Client-side only | 2026-07-15 |
| SwapMyAxe | Fabric | 1.21.10 | Client-side only | 2026-02-27 |
Questions
Does Attribute Reflex need Fabric API?
Does a server need Attribute Reflex?
Which game versions does Attribute Reflex support?
In the catalog
Attribute Reflex is one of 7,216 Magic mods on ModsFinder, and one of 3,630 Magic mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from NotRealJay
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What the author says
Attribute Reflex is a lightweight, high-performance utility mod for Minecraft. It eliminates the need for manual gear management by automatically swapping your armor and tools based on your real-time environment.
Official listing
- Modrinth page
- modrinth.com/mod/attribute-reflex
- Owner
- NotRealJay
- Published
- 2026-03-31
- Updated on Modrinth
- 2026-03-31
- Facts verified
- 2026-10-15