puffy-anti-exploit
by yogwoggf
puffy-anti-exploit is a server-side Fabric mod for Minecraft 1.20.1 that blocks several common unfair cheats on a multiplayer server.
What it does
It aims to prevent the use of these certain cheats and their derivatives, and it is meant to be a simple server-side layer rather than a full anti-cheat suite.
Rather than kicking players outright, the mod tries to moderate and reduce how often these exploits can be used. Kicking remains an option where it is necessary. Server owners install it on the server only, so players join without any client-side install. The mod runs on Fabric for 1.20.1, and the latest file is 0.2.7, published on 2024-04-27.
The source code and issue tracker are public. The code is open source under the MIT License, and the mod was first published on 2024-04-11.
Key features
Boat Fly prevention
Blocks the movement pattern that lets a player stay airborne while riding a boat.
Elytra Fly and Boost checks
Limits flight and speed exploits that abuse elytra movement on the server.
Long Jump detection
Targets jump cases that carry a player farther than normal movement allows.
Hitbox Expander handling
Counters clients that enlarge their hitboxes to reach players unfairly.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Survival multiplayer servers
Server owners who want to reduce movement and reach cheats without a full anti-cheat plugin.
Who it’s for: Server owners running Fabric 1.20.1 who need a light, server-side layer against the listed exploits. Players need nothing installed.
How it compares
Different anti cheat is a Fabric 1.20.1 mod that is server-side only, but its license is All rights reserved and it is not open source. Panda Anti-Exploit is server-side only and open source under the CC0 1.0 Universal license, with files for 1.21.4 – 26.3. No Crystal Hitbox is client-side only and open source under the MIT License, covering 1.20.1 – 1.21.8, so it works on the player side rather than the server.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| puffy-anti-exploit | Fabric | 1.20.1 | Server-side only | 2024-04-27 |
| Different anti cheat | Fabric | 1.20.1 | Server-side only | 2026-05-30 |
| Panda Anti-Exploit | Fabric | 1.21.4 – 26.3 | Server-side only | 2026-10-12 |
| No Crystal Hitbox | Fabric | 1.20.1 – 1.21.8 | Client-side only | 2025-12-29 |
Questions
Does puffy-anti-exploit need to be installed on the client?
Which loader does puffy-anti-exploit support?
Does puffy-anti-exploit kick players for cheating?
In the catalog
puffy-anti-exploit is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 34,764 mods support Minecraft 1.20.1.
Similar mods
Official listing
- Modrinth page
- modrinth.com/mod/puffy-anti-exploit
- Owner
- yogwoggf
- Published
- 2024-04-11
- Updated on Modrinth
- 2024-04-27
- Facts verified
- 2026-10-15