Mineforgian
Fiw AntiCheat
Verification and enforcement tools for Minecraft server administrators. Secure your server with powerful anti-cheat utilities and minimal additional mod dependencies.
- Загрузки
- 4K
- Подписчики
- 5
- Обновлён
- 6 июля 2026 г.
- Лицензия
- All-Rights-Reserved
Опубликован 9 июня 2026 г.
Fiw AntiCheat
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 configurable rules, and gives admins readable tools for enforcement, rollout, and investigation.
This is built for real server administration: blacklist known unfair mods, audit suspicious resource packs, enforce an official modpack with a whitelist, monitor detections before kicking, and keep per-player profiles so staff can see what changed over time.
Why Fiw AntiCheat?
Most anti-cheat setups focus only on movement or combat behavior. Fiw AntiCheat focuses on client mod visibility and modpack integrity:
- Detect common unfair mod categories such as cheat clients, x-ray, fullbright, freecam, autoclickers, and schematic printers
- Audit active and inactive resource packs, including x-ray/fullbright packs left installed under common names
- Enforce an official modpack list for private SMPs, events, staff servers, and modded communities
- Keep readable player profiles with noisy loader/API entries separated from real installed mods and resource packs
- Let admins roll out rules safely with monitor-only mode before kicking players
- Work across Fabric, Forge, and NeoForge targets with one shared rule engine
Fiw AntiCheat is an admin enforcement tool and mod verification layer. It is not magic and does not claim to be cheat-proof: a malicious custom client can lie. It is designed to make honest clients enforceable, catch common unwanted mods, and give staff practical visibility.
Supported Targets
| Loader | Minecraft | Status |
|---|---|---|
| Fabric | 1.21.1 | Active |
| NeoForge | 1.21.1 | Active |
| Fabric | 1.21.11 | Active |
| NeoForge | 1.21.11 | Active |
| Fabric | 1.20.1 | Active |
| MinecraftForge | 1.20.1 | Active |
NeoForge does not publish a real Minecraft 1.20.1 artifact on the current NeoForge Maven, so the 1.20.1 Forge-family build targets MinecraftForge 47.x.
Features
- Blacklist mode - allow normal mods while blocking selected unfair categories
- Whitelist mode - enforce a captured official modpack list
- Built-in signature database - detects known unfair mods by id and stable markers such as packages or mixin configs
- Admin profiles - view each player's current mods, platform/loader entries, and recent changes
- Resource pack auditing - log active and inactive packs, plus added/enabled/disabled/removed history
- Optional resource pack bans - flag by exact pack id/name or SHA-256 fingerprint, with kicks disabled by default
- Readable grouping - Fabric, Forge, NeoForge, API, and loader noise is separated from player-installed mods
- Monitor-only rollout - log and alert staff without kicking while tuning your rules
- Staff alerts - online operators can see detections as they happen
- Bypass list - exempt trusted accounts or test users by name or UUID
- Floodgate/Geyser support - optional Bedrock-player exemption when Floodgate is present
- Hot reload - reload config and signatures without restarting
- Server snapshots - capture the server or an online player as the official whitelist baseline
Commands
All commands require permission level 4.
| Command | Does |
|---|---|
/fiwmods reload |
Reload config and bundled signatures |
/fiwmods snapshot server |
Capture the server's loaded mods into the whitelist |
/fiwmods snapshot player <name> |
Capture an online player's reported mods into the whitelist |
/fiwmods profile <name> |
Show grouped current mods, resource packs, and recent profile history |
Configuration
The config is generated at:
config/fiw-mods-api/config.json
The internal config folder keeps the original id for compatibility, even though the public mod name is Fiw AntiCheat.
Main options:
| Option | Purpose |
|---|---|
mode |
blacklist or whitelist |
detection.preset |
strict, balanced, lenient, or custom |
detection.monitor_only |
Log detections without kicking |
detection.allow_overrides |
Allow specific signatures/categories even if preset blocks them |
detection.banned_mods |
Add exact mod ids to block |
resource_packs.log |
Record active/inactive resource packs in profiles |
resource_packs.kick_on_banned |
Kick for configured pack matches; default is log-only |
resource_packs.banned_packs |
Add exact pack ids or display names to flag |
resource_packs.banned_fingerprints |
Add exact SHA-256 pack hashes to flag renamed packs |
exemptions.bypass_players |
Bypass specific names or UUIDs |
whitelist.official_mods |
Official modpack snapshot used in whitelist mode |
Requirements
| Target | Requirements |
|---|---|
| Fabric 1.20.1 | Fabric Loader, Fabric API, Java 17 |
| MinecraftForge 1.20.1 | Forge 47.x, Java 17 |
| Fabric 1.21.1 | Fabric Loader, Fabric API, Java 21 |
| NeoForge 1.21.1 | NeoForge 21.1.x, Java 21 |
| Fabric 1.21.11 | Fabric Loader 0.19.2+, Fabric API 0.141.4+1.21.11, Java 21 |
| NeoForge 1.21.11 | NeoForge 21.11.x, Java 21 |
Install Fiw AntiCheat on the server and on player clients. The client companion is what reports the mod list and resource pack state to the server.
Best Uses
- Private SMP modpack enforcement
- Event servers where everyone must use the same mod list
- Staff visibility into suspicious or changing client setups
- Blocking common unfair utility mods without locking down harmless QoL mods
- Auditing players who briefly enable, disable, or delete suspicious resource packs
- Gradual anti-cheat rollout with monitor-only logging before enforcement
Documentation
Full English documentation ships with the mod in DOCS_EN.md: the join
protocol, complete config reference, both modes, the signature database,
commands, per-player profiles, and troubleshooting.
License
Fiw AntiCheat is released under the Fiw AntiCheat License (Attribution, Non-Commercial). You are free to use, modify, fork, and redistribute it — including modified builds — as long as you give clear, visible credit to the original creator (Fi3w0) with a link back and keep existing notices intact. You may not sell it or any fork without written permission (running it on a server, even a monetized one, is fine). Fi3w0 retains authorship of the original work.
Contact: Discord fi3w0.
Contact me: @Fi3w0 on Github/Discord
Made by Fi3w0 — built for a private SMP, shared with everyone.
Ченджлог
2.0.2Релиз1.21.11 · 6 июля 2026 г.
[2.0.2] - Resource pack auditing
Added
- Added companion-client reporting for active and inactive resource packs.
- Added resource pack profile history, including added, removed, enabled, disabled, and fingerprint-updated events.
- Added
/fiwmods profile <name>output sections for active and inactive resource packs. - Added
resource_packsconfig for log-only auditing by default, with optional banned pack name/id and SHA-256 fingerprint checks. - Added live resource-pack update reporting after join so active/inactive/delete changes during a session are recorded when the companion client observes them.
Changed
- Join verification responses now include resource pack data alongside the mod list and nonce.
- Existing config files are not reset on upgrade; missing
resource_packsvalues are filled with defaults in memory and appear in newly generated configs or future saves.
2.0.2Релиз1.21.1 · 6 июля 2026 г.
[2.0.2] - Resource pack auditing
Added
- Added companion-client reporting for active and inactive resource packs.
- Added resource pack profile history, including added, removed, enabled, disabled, and fingerprint-updated events.
- Added
/fiwmods profile <name>output sections for active and inactive resource packs. - Added
resource_packsconfig for log-only auditing by default, with optional banned pack name/id and SHA-256 fingerprint checks. - Added live resource-pack update reporting after join so active/inactive/delete changes during a session are recorded when the companion client observes them.
Changed
- Join verification responses now include resource pack data alongside the mod list and nonce.
- Existing config files are not reset on upgrade; missing
resource_packsvalues are filled with defaults in memory and appear in newly generated configs or future saves.
2.0.2Релиз1.20.1 · 6 июля 2026 г.
[2.0.2] - Resource pack auditing
Added
- Added companion-client reporting for active and inactive resource packs.
- Added resource pack profile history, including added, removed, enabled, disabled, and fingerprint-updated events.
- Added
/fiwmods profile <name>output sections for active and inactive resource packs. - Added
resource_packsconfig for log-only auditing by default, with optional banned pack name/id and SHA-256 fingerprint checks. - Added live resource-pack update reporting after join so active/inactive/delete changes during a session are recorded when the companion client observes them.
Changed
- Join verification responses now include resource pack data alongside the mod list and nonce.
- Existing config files are not reset on upgrade; missing
resource_packsvalues are filled with defaults in memory and appear in newly generated configs or future saves.
2.0.2Релиз1.21.11 · 6 июля 2026 г.
[2.0.2] - Resource pack auditing
Added
- Added companion-client reporting for active and inactive resource packs.
- Added resource pack profile history, including added, removed, enabled, disabled, and fingerprint-updated events.
- Added
/fiwmods profile <name>output sections for active and inactive resource packs. - Added
resource_packsconfig for log-only auditing by default, with optional banned pack name/id and SHA-256 fingerprint checks. - Added live resource-pack update reporting after join so active/inactive/delete changes during a session are recorded when the companion client observes them.
Changed
- Join verification responses now include resource pack data alongside the mod list and nonce.
- Existing config files are not reset on upgrade; missing
resource_packsvalues are filled with defaults in memory and appear in newly generated configs or future saves.
2.0.2Релиз1.21.1 · 6 июля 2026 г.
[2.0.2] - Resource pack auditing
Added
- Added companion-client reporting for active and inactive resource packs.
- Added resource pack profile history, including added, removed, enabled, disabled, and fingerprint-updated events.
- Added
/fiwmods profile <name>output sections for active and inactive resource packs. - Added
resource_packsconfig for log-only auditing by default, with optional banned pack name/id and SHA-256 fingerprint checks. - Added live resource-pack update reporting after join so active/inactive/delete changes during a session are recorded when the companion client observes them.
Changed
- Join verification responses now include resource pack data alongside the mod list and nonce.
- Existing config files are not reset on upgrade; missing
resource_packsvalues are filled with defaults in memory and appear in newly generated configs or future saves.
2.0.2Релиз1.20.1 · 6 июля 2026 г.
[2.0.2] - Resource pack auditing
Added
- Added companion-client reporting for active and inactive resource packs.
- Added resource pack profile history, including added, removed, enabled, disabled, and fingerprint-updated events.
- Added
/fiwmods profile <name>output sections for active and inactive resource packs. - Added
resource_packsconfig for log-only auditing by default, with optional banned pack name/id and SHA-256 fingerprint checks. - Added live resource-pack update reporting after join so active/inactive/delete changes during a session are recorded when the companion client observes them.
Changed
- Join verification responses now include resource pack data alongside the mod list and nonce.
- Existing config files are not reset on upgrade; missing
resource_packsvalues are filled with defaults in memory and appear in newly generated configs or future saves.
2.0.1Релиз1.20.1 · 9 июня 2026 г.
Changelog
All notable changes to Fiw AntiCheat are listed here.
[2.0.1] - Expanded cheat signature database
Changed
- Expanded bundled signatures for common hacked clients and aliases, including Wurst, Meteor/addons, LiquidBounce, BleachHack, MatHax, ThunderHack, Aoba, ForgeHax, Sigma, Jigsaw, Huzuni, Wolfram, Flux, Vape, SalHack, KAMI/Lambda, Future/RusherHack-style clients, and mod-detection bypass tools.
- Expanded x-ray detection aliases for Advanced XRay, XRay Ultimate, seed cracker/mapper tools, cave finder names, and common x-ray jar naming variants.
- Expanded fullbright/gamma detection aliases for Gamma Utils, true/dynamic fullbright, resource gamma utilities, boosted brightness, and night-vision utility naming variants.
- Expanded freecam detection aliases for Freecam, Easy Freecam, FreeCamMC, Aether Freecam, FPV Freecam, Free Camera, FToFreecam, and Fair Freecam.
- Expanded autoclicker, schematic printer, and damage-indicator aliases.
Fixed
- Added
flyhack/fly-hackto cheat-client signatures after the NeoForge 1.21.11 smoke test showed the client mod list was received but that alias was not yet blocked.
2.0.1Релиз1.21.1 · 9 июня 2026 г.
Changelog
All notable changes to Fiw AntiCheat are listed here.
[2.0.1] - Expanded cheat signature database
Changed
- Expanded bundled signatures for common hacked clients and aliases, including Wurst, Meteor/addons, LiquidBounce, BleachHack, MatHax, ThunderHack, Aoba, ForgeHax, Sigma, Jigsaw, Huzuni, Wolfram, Flux, Vape, SalHack, KAMI/Lambda, Future/RusherHack-style clients, and mod-detection bypass tools.
- Expanded x-ray detection aliases for Advanced XRay, XRay Ultimate, seed cracker/mapper tools, cave finder names, and common x-ray jar naming variants.
- Expanded fullbright/gamma detection aliases for Gamma Utils, true/dynamic fullbright, resource gamma utilities, boosted brightness, and night-vision utility naming variants.
- Expanded freecam detection aliases for Freecam, Easy Freecam, FreeCamMC, Aether Freecam, FPV Freecam, Free Camera, FToFreecam, and Fair Freecam.
- Expanded autoclicker, schematic printer, and damage-indicator aliases.
Fixed
- Added
flyhack/fly-hackto cheat-client signatures after the NeoForge 1.21.11 smoke test showed the client mod list was received but that alias was not yet blocked.
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