
Modrinth · Minecraft mod
Automatic replacement
Automatically equips Totems of Undying to your offhand (toggleable in ESC menu). Totem stack size increased to 8. Many other item stack limits adjusted. World height extended from -128 to 1024.
Quick answer
Which Automatic replacement release matches 1.20.1 Forge?
Automatic replacement 1.2.1+mc1.20.1 targets 1.20.1 with Forge. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Automatic replacement required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Automatic replacement 1.2.1+mc1.20.1 need?
1.2.1+mc1.20.1 on 1.20.1 Forge. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Automatic replacement without breaking your instance.
Built for Automatic replacement 1.2.1+mc1.20.1 on 1.20.1 Forge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.2.1+mc1.20.1. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.2.1+mc1.20.1. It opens that exact file at the source.
About this project
What does Automatic replacement add?
Automatic Replacement
✨ Features
Auto Totem Equip
- Automatically moves Totem of Undying to offhand when empty
- Toggle via ESC → Options menu button
- Global setting, syncs to all players
Commands
| Command | Effect |
|---|---|
/auto true |
Enable |
/auto false |
Disable |
/auto toggle |
Toggle |
/auto status |
Check status |
Stack Size Changes
| Item | Limit |
|---|---|
| Totem of Undying | 8 |
| Milk Bucket | 16 |
| Cake | 8 |
| Shield | 4 |
| All Boats / Chest Boats | 8 |
| All Minecarts | 8 |
| All Mob Heads | 8 |
| All Potions | 16 |
| Name Tag | 16 |
| Armor Stand | 4 |
| All Beds | 16 |
| Saddle | 16 |
| All Buckets | 16 |
| Bundle (empty) | 16 |
| Elytra | 8 |
| Book and Quill (empty) | 8 |
| All Music Discs | 16 |
World Height
- Min Y: -128
- Max Y: 1024
🔧 Technical Details
- Fabric API networking
- Mixin for stack size
- Mixin for Options button
📦 Requirements
- Minecraft 1.20.1+
- Fabric Loader ≥0.19.2
- Fabric API (latest)
📄 License
MIT
Project description from Modrinth.
Pick your setup
Automatic replacement by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.1
1 loader build26.1
1 loader build1.21.11
1 loader build1.21.10
1 loader build1.21.9
1 loader build1.21.8
1 loader build1.21.7
1 loader build1.21.6
1 loader build1.21.5
1 loader build1.21.4
1 loader build1.21.3
1 loader buildShowing the newest 12 of 20 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Automatic replacement versions and loaders
1.2.1+mc1.20.1
automatic_replacement-1.2.1+mc1.20.1.jar
6 Jun 2026
Looking for an older file? The official Modrinth project page is in Resources.