Antispec
by QLG0
Antispec is a Forge server mod that stops players in spectator mode from passing through blocks to see ores, bases and caves.
What it does
Players in spectator mode can move through solid blocks, which lets them look for hidden bases, caves and ores. Antispec blocks that movement on the server, aimed at survival SMP and PvP servers that want to limit spectator-based cheating. The mod has a configuration file and is published as a Forge file for 1.20.1, released under the MIT License and not open source. Only the server needs it, so players join without installing anything.
Key features
Blocks spectator clipping
Spectator-mode players cannot pass through blocks, so they cannot see hidden ores or bases from inside terrain.
Survival server protection
Built for survival SMP and PvP servers where spectating is used to scout other players' bases and caves.
Configurable behavior
A configuration file lets server owners adjust how the restriction is applied before the server starts.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
NO CHEATING! is a Forge mod for 1.20.1 that the server requires, with the client optional, under the BSD 2-Clause License and not open source. Kill to Spectate is a server-side Forge mod for 1.20.1, open source under the GNU General Public License v3.0 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Antispec | Forge | 1.20.1 | Server-side only | 2026-03-13 |
| NO CHEATING! | Forge | 1.20.1 | Server required, client optional | 2026-02-06 |
| Kill to Spectate | Forge | 1.20.1 | Server-side only | 2026-05-17 |
Questions
Does Antispec need to be installed on the client?
Which Minecraft version does Antispec support?
In the catalog
Antispec is one of 3,545 Optimization mods on ModsFinder, and one of 1,441 Optimization mods for Forge. 34,764 mods support Minecraft 1.20.1.
Similar mods
What the author says
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.
Official listing
- Modrinth page
- modrinth.com/mod/antispec
- Owner
- QLG0
- Published
- 2026-03-13
- Updated on Modrinth
- 2026-03-13
- Facts verified
- 2026-10-15