Non-OP Command Blocker
This mod blocks selected commands for non-operator players and lets operators manage the block list in-game.
About this Mod
non-op-command-blocker
This mod blocks the default commands that non-OP players can use when running a Minecraft server.
By default, it blocks these commands:
/help/list/me/msg/random/teammsg/tell/tm/trigger/w
Operators can manage the block list in-game with these commands:
/cblock <command> block/cblock <command> allow
Ex). /cblock worldedit allow
Ex). /cblock spark allow
Ex). /cblock vanish allow
Blocked commands are saved to a config file, so your settings stay after server restarts.
This mod is designed for server owners who want tighter control over which commands regular players can use, while still allowing operators full access.
Requirements
- Minecraft 26.1+
- Fabric Loader
- Fabric API (required)
- Server-side only (clients do not need to install the mod)
To help us develop a more convenient and better mod, please share any bugs, issues, or feature ideas you have! -> Bug Report
Available Versions
How to Install Non-OP Command Blocker on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1).
Install Mod
Open the mod browser in the dashboard and search for "Non-OP Command Blocker". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
26.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Non-OP Command Blocker server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1). You can switch loaders with one click in the panel.
Is Non-OP Command Blocker compatible with fabric?
Non-OP Command Blocker officially supports fabric for Minecraft 26.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Non-OP Command Blocker – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Non-OP Command Blocker consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install Non-OP Command Blocker with just one click on your server.