AutoBreachSwap
by ProPlayer3x7
AutoBreachSwap is a Fabric client-side utility that switches the hotbar to a mace when a player holds a sword and attacks, so breach attributes apply without manual scrolling.
What it does
Holding a sword and left-clicking moves the selected hotbar slot to the mace, letting the attack land with breach density. The swap runs in one direction only: a persistent slot lock keeps the mace selected after the hit, and the player decides when to switch back. Set the target mace slot anywhere from 1 to 9 in the in-game menu, and turn the mod on or off from the same place.
The mod is built on tag-based detection instead of fixed item IDs, which is why it covers Minecraft 1.21 and its sub-versions through 1.21.8+. Installation needs Fabric and Cloth Config API, and ModMenu is needed to open the settings screen. The mod is client-side only, so servers do not need it. It is published for Fabric across 12 release versions, 1.21 – 1.21.11, under All rights reserved, and is not open source.
The author's notes say the mod only automates hotbar switching and does not change the inventory. Before running it in competitive play, a player should confirm that the server's rules allow inventory automation and macro mods.
Key features
One-click mace swap
Left-clicking while holding a sword switches the hotbar to the mace in a single action.
One-way attribute swap
The mace stays selected after the swap, unlike mods that force the sword back immediately.
Persistent slot lock
The chosen mace slot remains active until the player switches back by hand.
Configurable mace slot
The target hotbar slot can be set from 1 to 9 in the in-game settings menu.
Tag-based detection
Items are recognized through tags, so the swap keeps working across the 1.21 sub-versions.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players on Fabric who use both a mace and a sword in 1.21 or later and want the hotbar to change on attack. Because the mod changes hotbar selection automatically, players on servers with rules against inventory automation should check those rules first.
How it compares
Swap Helper is a Fabric client-side mod for 1.21 – 26.1.2 under All rights reserved, with no open source code. Breach Swords is a Fabric mod for 1.20.4 – 1.21.4 that runs on client and server and is released under the MIT License. Attribute Swapping Fix is a Fabric server-side mod for 1.21.1 – 26.3 released under the CC0 1.0 Universal license.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| AutoBreachSwap | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-03-20 |
| Swap Helper | Fabric | 1.21 – 26.1.2 | Client-side only | 2026-10-11 |
| Breach Swords | Fabric | 1.20.4 – 1.21.4 | Client and server | 2024-12-05 |
| Attribute Swapping Fix | Fabric | 1.21.1 – 26.3 | Server-side only | 2026-10-04 |
Questions
Does AutoBreachSwap need Cloth Config API?
Does the server need AutoBreachSwap installed?
Does the mace switch back to the sword on its own?
In the catalog
AutoBreachSwap is one of 17,631 Equipment mods on ModsFinder, and one of 8,894 Equipment mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from ProPlayer3x7
Similar mods
What the author says
⚔️ Auto Breach Swap (1.21+) Maximize your Mace attributes with zero effort. Auto Breach Swap is a lightweight, client-side utility mod designed for Minecraft 1.21 and above. It solves the "Mace vs. Sword" dilemma by automatically swapping to your Mace the moment you initiate an attack with a Sword, ensuring you get…
Official listing
- Modrinth page
- modrinth.com/mod/autobreachswap
- Owner
- ProPlayer3x7
- Published
- 2026-03-11
- Updated on Modrinth
- 2026-03-20
- Facts verified
- 2026-10-15