Fiw AntiCheat
by Fi3w0
Fiw AntiCheat is a verification and enforcement tool for Minecraft server administrators, used to deal with unwanted client mods without guessing.
What it does
The mod flags common unfair client mod categories such as cheat clients, fullbright, freecam and autoclickers, and also reports schematic printers. Staff can list the resource packs a player has active or parked, including packs hidden under ordinary names that brighten the view or expose ores.
Each player gets a readable profile that separates real installed mods from noisy loader and API entries. Rules can be rolled out in a monitor-only mode first, so detections are checked before any player is kicked. A blacklist mode blocks selected unfair categories while leaving normal mods alone, and a whitelist mode enforces the captured modpack list. One shared rule engine covers the Fabric, Forge and NeoForge builds.
The server and every player need the mod, since the environment is client and server. It requires Fabric API, and its admin commands need permission level 4. Files are published for 1.20.1, 1.21.1 and 1.21.11 under All rights reserved, and the project is not open source.
Key features
Unfair mod detection
Flags cheat clients, fullbright, freecam, autoclickers and schematic printers on joining players.
Resource pack audit
Lists active and parked resource packs, including packs hidden under ordinary names that alter visibility.
Modpack enforcement
Checks each player's mods against a captured official modpack list, so the server admits only that set.
Monitor-only rollout
Records detections without kicking anyone, so staff can check what changed before turning enforcement on.
Blacklist and whitelist modes
Blacklist mode blocks chosen unfair categories, while whitelist mode allows only the captured modpack list.
Per-player profiles
Keeps a readable record of each player's real installed mods, kept apart from loader and API entries.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
How it compares
Trusted Clients is open source under the MIT License and runs on Fabric and Forge for 1.20.1 – 26.3 with the same client and server environment. BetterGuard is server-side only and published for Fabric and NeoForge on 1.21.1, under a custom license that is not open source. Pixel's AntiCheat targets NeoForge only on 1.21.1 under the MIT License and is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Fiw AntiCheat | Fabric, Forge and NeoForge | 1.20.1 – 1.21.11 | Client and server | 2026-08-28 |
| Trusted Clients | Fabric and Forge | 1.20.1 – 26.3 | Client and server | 2026-10-07 |
| BetterGuard | Fabric and NeoForge | 1.21.1 | Server-side only | 2026-05-25 |
| Pixel's AntiCheat | NeoForge | 1.21.1 | Client and server | 2025-06-07 |
Questions
Does Fiw AntiCheat need Fabric API?
Can admins test rules without kicking players?
Which game versions are supported?
In the catalog
Fiw AntiCheat is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from Fi3w0
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What the author says
Professional mod verification, modpack enforcement, and admin investigation tools for Minecraft servers. Fiw AntiCheat helps server owners deal with unwanted client mods without guessing what players are running. On join, the server challenges the client companion mod, records the reported mod list, checks it against…
Official listing
- Modrinth page
- modrinth.com/mod/fiw-anticheat
- Owner
- Fi3w0
- Published
- 2026-06-09
- Updated on Modrinth
- 2026-08-28
- Facts verified
- 2026-10-15