Supply
by 333
Supply is a NeoForge utility that refills the item in a hand from the inventory the moment it runs out, so a tool or block stack keeps working through a session.
What it does
When the stack in a hand is used up, Supply looks through the inventory for a matching replacement and moves it into the same slot. It tracks the item that was last in each hand, which lets it choose the next supply more sensibly. Both the main hand and the offhand are covered, and the swap happens without a visible gap in the hotbar.
The mod is aimed at players who rely on tools, throwing weapons, food or building blocks during long sessions. Its continuous building option refills placeable blocks while a player keeps placing them. It is a client-side only mod, so the server does not need it and players do not need to install anything extra on the server side.
Supply is published for NeoForge 1.21.1, with the latest file 1.0.4 dated 2025-12-20. The project is open source under the Mozilla Public License 2.0, and source code and an issue tracker are linked from its public page.
Key features
Hand refill
Items used up in either hand are replaced from the inventory, with the main hand and offhand both supported.
Matching search
The first search looks for an identical item, comparing enchantments, durability and data components before any substitute is used.
Loyalty awareness
A thrown weapon with the Loyalty enchantment is left to return on its own instead of being replaced at once.
Smart eating
The mod eats the last food item only while the player is still hungry, then searches for more food.
Audio feedback
A subtle sound plays when a supply succeeds, so the player knows the replacement has happened.
Continuous building
An optional setting supplies the next block in the stack, letting a player keep placing blocks without interruption.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Smart Crafter is a NeoForge mod for 1.21.1 that runs on the client and the server together, under the MIT License, and is not open source. Oh My Vault! targets a wider range, 1.21.1 – 26.3 across Fabric, Forge, NeoForge and Quilt, and is server required with the client optional, under All rights reserved. Supply, by contrast, is only a client-side mod for NeoForge 1.21.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Supply | NeoForge | 1.21.1 | Client-side only | 2025-12-20 |
| Smart Crafter | NeoForge | 1.21.1 | Client and server | 2026-06-17 |
| Oh My Vault! | Fabric, Forge, NeoForge and Quilt | 1.21.1 – 26.3 | Server required, client optional | 2026-09-05 |
Questions
Does Supply need to be installed on the server?
Which loader does Supply support?
Does Supply replace a thrown weapon that has Loyalty?
In the catalog
Supply is one of 29,952 Game mechanics mods on ModsFinder, and one of 12,140 Game mechanics mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
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Official listing
- Modrinth page
- modrinth.com/mod/supply
- Owner
- 333
- Published
- 2025-12-08
- Updated on Modrinth
- 2025-12-20
- Facts verified
- 2026-10-15