⚔️ Auto-Attribute Swapping

Auto-Attribute Swapping exploits a longstanding vanilla Minecraft behavior (MC-28289) — when you switch hotbar slots in the same tick as an attack packet, the server reads damage from your new item but uses the cooldown that was already charged from your old one.

This mod automates the entire sequence at the packet level, invisibly, on every critical hit.

Crit conditions

The swap only activates when all of these are true:

Falling (fall distance > 0)
Airborne (not on ground)
Not sprinting
Not in water or lava
Not on a ladder / vine
No Blindness status effect
Not riding a vehicle (horse, elytra, etc.)

Requirements

Dependency	Version
Minecraft	1.21 – 1.21.4
Fabric Loader	≥ 0.15.0
Fabric API	Any
Prism Mod Menu	Any
Java	21+

Installation

Install Fabric Loader ≥ 0.15.0
Drop Fabric API into your mods folder
Drop Prism Mod Menu into your mods folder
Drop ghostswap-2.0.0.jar into your mods folder
Launch and press G to enable

Keybinds

Key	Action
G	Toggle Auto-Attribute Swapping on / off

Notes

Client-side only — works on any server (vanilla, Paper, Spigot)
Tested on Minecraft 1.21 – 1.21.4 with Fabric
Made by Shubham96 · Prism Studios

Auto-Attibute-Swap

Prism Menu