ModsJava
CUCM-CustomUnknownCmdMsg
Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.
A simple plugin that allows users to replace the "Unknown or incomplete command..." message with your own custom message
⬇ Download on Hangar# **● Custom Unknow Command Message ●**
A simple plugin that allows users to replace the "Unknown or incomplete command..." message with your own custom message.\
Support from: 1.20+

To something like this:

And even support multiple randomized messages:

All customizable by your own taste.
**● Installation ●**
- Simply download the plugin and drop it in your paper's (or fork) plugins folder.
**● Command ●**
| Command | Description | Permission |
|-------------|------------------------|------------|
| /cucmreload | Reload the config file | cucm.admin |
**● Config ●**
| Option | Description | Default |
|-----------------------|-------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------|
| single-message | The message that will replace the "Unknown or incomplete command..." message | Unknown Command, please use /help for more information. |
| use-multiple-messages | Toggling this option will ignore the single-message and make the plugin chose a random message from the list everytime it is called | false |
| message-list | There is no limit to the number of messages in the list, you can add or remove as much as you want | |
**● Placeholders ●**
There are two types of placeholders you can use in your messages:
1. **Built-in placeholders** (always available, even without PlaceholderAPI):
- `{player}` and `` → The player's name
- `{displayname}` and `` → The player's display name
2. **PlaceholderAPI placeholders** (optional, only if PAPI is installed):
- Use any PAPI tags like `%player_name%`, `%luckperms_prefix%`, etc.
- If not installed, these placeholders will not be parsed and will appear as plain text.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20, 1.20.1, 1.20.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Hangar — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
CUCM-CustomUnknownCmdMsg is a free Minecraft Java mod. Compatible with Minecraft 1.20, 1.20.1, 1.20.2, 1.20.3 and newer. Downloaded 21 times (via Hangar). Download it and open it directly in the game.