Unlimited Chatbox
by bagyette.fr
Unlimited Chatbox removes the 256-character limit on Minecraft's chat command input field, so players can type messages of up to 32767 characters.
What it does
Vanilla chat caps what a player can type at 256 characters. Unlimited Chatbox lifts that cap on the client, letting a single message or command reach 32767 characters. The change is small: the mod is a client-side Fabric mod of about 15 KB and adds no new items, blocks or screens.
On single-player worlds and vanilla servers the mod works as described. Paper and Purpur servers need the startup argument -Dpaper.maxChatCommandInputSize=32767 for long input to be accepted. Spigot and Bukkit servers have not been tested. Because the mod is client-side only, server owners do not install it, and players need Fabric API for it to load, as its configuration depends on that library. The mod is published for Fabric only, across 29 release versions 1.19 – 26.3, and its latest file is 1.2 for 26.3. The code is under the MIT License, and the project is not open source in the sense of publishing its sources.
The mod can be useful for pasting long text into chat, writing lengthy commands or sending multi-line messages on servers that accept them. Because it changes input handling only, gameplay is not affected, although the author notes a configuration dependency on Fabric API.
Key features
Longer chat input
The chat command field accepts up to 32767 characters instead of the vanilla 256.
Lightweight client mod
The jar is roughly 15 KB and changes only how the input field accepts text.
Works in single-player
Single-player worlds accept the longer input without any extra setup.
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
MCDRCommandCompletionReforged is open source under the GNU Lesser General Public License v3.0 only and runs on client and server for Fabric files 1.16 – 1.21.10, so it adds command completion rather than longer input. Simple Kill Command is open source under the MIT License and covers Fabric, Forge and NeoForge across its supported versions. Unicode Arguments is optional on either side, with CC0 1.0 Universal terms and files for 1.14.4 – 1.21.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Unlimited Chatbox | Fabric | 1.19 – 26.3 | Client-side only | 2026-09-22 |
| MCDRCommandCompletionReforged | Fabric | 1.16 – 1.21.10 | Client and server | 2025-11-19 |
| Simple Kill Command | Fabric, Forge and NeoForge | 1.8.9 – 26.3 | Not published | 2026-10-01 |
| Unicode Arguments | Fabric | 1.14.4 – 1.21 | Client or server, optional | 2024-07-01 |
Questions
Does Unlimited Chatbox need to be installed on the server?
Why does input fail on Paper or Purpur servers?
Does Unlimited Chatbox work with Spigot or Bukkit servers?
In the catalog
Unlimited Chatbox is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 8,071 mods support Minecraft 26.3.
Similar mods
What the author says
Tiny (~15KB) client-side Fabric mod that lets you type up to 32767 characters in Minecraft's chat and command input field. No configuration, no Fabric API dependency, and no gameplay impact.
Official listing
- Modrinth page
- modrinth.com/mod/unlimited-chatbox
- Owner
- bagyette.fr
- Published
- 2026-08-29
- Updated on Modrinth
- 2026-09-22
- Facts verified
- 2026-10-15