Operators Only!

Operators Only is similar to a second Whitelist, except it only allows /op'ed players online the server.

348 Downloads

fabricgame-mechanicsmanagementoptimization

Rent Server with this Mod

About this Mod

Operators Only

A simple lightweight Fabric server tool for controlling access to your server!

Easily toggle Operators Only mode with a command
Lets you keep the server just for operators when needed
Shows a clear message to anyone who can’t join [ The server is in Operators Only mode. ]
Great for maintenance, or testing!
Server-side only no extra installs needed for players

Available Versions

Operators Only! 1.0.1release

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8fabric

August 21, 2025

Operators Only! 1.0.0release

MC 1.21.8fabric

August 20, 2025

How to Install Operators Only! 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 (1.21.8).

Install Mod

Open the mod browser in the dashboard and search for "Operators Only!". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.8, 1.21.7, 1.21.6 (+6 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Operators Only! 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 (1.21.8). You can switch loaders with one click in the panel.

Is Operators Only! compatible with fabric?

Operators Only! officially supports fabric for Minecraft 1.21.8, 1.21.7, 1.21.6. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Operators Only! – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Operators Only! 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.