Antispec
Antispec is a server mod that prevents players from using spectator mode to pass through blocks and spy on bases, caves, or ores, which helps survival SMP or PvP servers limit cheating.
Screenshots
About this Mod
Antispec
Antispec is a server mod that prevents players from using spectator mode to pass through blocks and spy on bases, caves, or ores.
This mod is ideal for survival, SMP, or PvP servers that want to prevent cheating while spectatoring.
Features
Prevents spectators from passing through blocks
Players can still fly close to the ground
Players cannot enter walls or dirt
Moderators (OPs) can still use spectator mode normally
Lightweight and optimized system (works on every player tick)
Why use Antispec?
On many servers, players can:
pass through dirt
see ores
spy on hidden bases
Antispec completely blocks this behavior.
Compatibility
Minecraft 1.20.1
Forge
Compatible with most mods
Usage
Simply install the mod on your server.
No configuration is required. Author
Created by QLG0
Available Versions
How to Install Antispec on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "Antispec". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Antispec server crashes on startup – what to do?
Most common cause: wrong forge 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 (1.20.1). You can switch loaders with one click in the panel.
Is Antispec compatible with forge?
Antispec officially supports forge for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Antispec – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Antispec 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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Rent Modded Server
Install Antispec with just one click on your server.