Что такое Arbiter AntiCheat и для чего он нужен?

Arbiter AntiCheat - это плагин для Minecraft. Anti-cheat for Spigot, Paper and Purpur 1.9 & 26.2. Watches movement, combat and items, and only acts when several checks agree.

Какие версии Minecraft поддерживает Arbiter AntiCheat?

Arbiter AntiCheat совместим со следующими версиями Minecraft: 1.9, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.10, 1.10.1, 1.10.2, 1.11, 1.11.1, 1.11.2, 1.12 и ещё 52.

С какими ядра сервера совместим Arbiter AntiCheat?

Arbiter AntiCheat работает на: bukkit, paper, purpur, spigot.

Кто создал Arbiter AntiCheat?

DeadByte является автором проекта.

Безопасен ли Arbiter AntiCheat для скачивания?

Arbiter AntiCheat имеет 23 загрузок на Modrinth - это показатель доверия сообщества. Локальных оценок пока нет - вы можете быть первым, кто оценит этот проект. Распространяется под лицензией MIT. Работает только на сервере.

Как установить Arbiter AntiCheat?

Поместите файл .jar в папку plugins вашего сервера (Bukkit, Spigot, Paper, Purpur и др.). Перезагрузите сервер или используйте плагин-менеджер.

Где скачать Arbiter AntiCheat?

Вы можете скачать Arbiter AntiCheat прямо на этой странице - используйте кнопку "Скачать" вверху. Все файлы проверены и загружаются с официального источника (Modrinth).

Можно ли использовать Arbiter AntiCheat на сервере с друзьями?

Да, Arbiter AntiCheat поддерживает многопользовательскую игру. Требуется установка только на сервер.

Как часто обновляется Arbiter AntiCheat?

Последнее обновление проекта было 13 октября 2026 г.. Разработчики регулярно выпускают новые версии - следите за списком изменений во вкладке "Changelog".

Arbiter

Evidence based anti-cheat for Spigot, Paper and Purpur

Arbiter adds up several small signs before it acts, so one odd tick never gets anyone punished.

Why Arbiter

Lag, bad ping, knockback and teleports make Arbiter less suspicious, not more.

Built to avoid false flags
Evidence, not single hits	Findings build a risk score that fades over time
Two checks must agree	Needed before any kick or punishment
Punishments are off by default	You turn them on when you are ready
Safe setbacks	Loop protection stops players getting stuck
Clear alerts	Shows measured versus expected values

What it covers

Movement

Speed, Fly, Step, Jesus, ground spoofing and timer

Combat

Reach, hits outside the attacker's view, multi target hits and repeated aim snaps

Rotation

Invalid pitch and input analysis

Items

Item Security Engine with six item classes and an authorization system

Attributes

Audit for scale, step height, gravity, jump strength and reach

Extras

Per player and per category risk score, API for other plugins, and JSON log files, one per day

Quick Start

Drop the jar into your plugins folder and start the server.
Edit the generated config.yml if you want to change thresholds.
Run /arbiter alerts to see findings live.
Hold any legitimate custom item and run /arbiter authorize.
When you trust the results, raise kick-at and punish-at in the config.

Tip: use /arbiter debug <player> to watch one player's findings as they happen.

Checks

All 11 checks

Check	Group	What it looks at
Speed	Movement	Horizontal speed against what vanilla allows, including sprint jumps, ice, slime, potions and attributes
Fly	Movement	Upward movement in the air that gravity doesn't explain
GroundSpoof	Movement	Claiming to be on the ground with nothing underneath
Step	Movement	Climbing higher than a jump or step allows
Jesus	Movement	Standing on water
Timer	Packet	Sending moves faster than the tick rate allows
Rotation	Rotation	Invalid pitch and unnatural rotation steps
Reach	Combat	Distance to where the target was, based on the attacker's ping
HitDirection	Combat	Hitting someone far outside the view direction
MultiTarget	Combat	Hitting three or more targets within 100 ms
AimSnap	Combat	Repeated hits right after big rotation snaps

Example alert

[Arbiter] Example Speed 91%
obs 0.421 exp 0.287 n=14 ping 34ms tps 19.970 horizontal sprinting

obs is what was measured, exp is what vanilla allows.

Item Security

Every item is sorted into one of six classes.

Class	Meaning	Action
`VANILLA`	Nothing custom	None
`SERVER_AUTHORIZED`	You or a plugin approved it	None
`CUSTOM_BUT_SAFE`	Custom name, lore or modest attributes	None
`SUSPICIOUS`	Looks odd	Reported
`INVALID`	Oversized data, impossible values	Removed
`DANGEROUS`	Command click events, injection strings, extreme attributes	Removed

Checked on: click, creative pick, hotbar change, use, drop, book edit, block placement and a background inventory scan.

Command blocks, structure blocks and jigsaw blocks can only be placed by ops or players with arbiter.items.command.

Approve a legitimate custom item by holding it and running /arbiter authorize.

Compatibility

One jar covers every version. Things a server doesn't have are detected on startup and switched off by themselves.

Platforms

Platform	Status
Spigot	Yes
Paper	Yes
Purpur	Yes
CraftBukkit and forks	Yes
Folia	No
Fabric, Forge, NeoForge, Sponge	No

Versions

Version	Status
1.9 to 1.12.2	Yes
1.13 to 1.20.6	Yes
1.21 to 1.21.11	Yes
26.1 to 26.2	Yes

Minecraft has no 1.9.5 to 1.9.8 releases, so the 1.9 line ends at 1.9.4.

Features by version

Feature	1.9 to 1.12	1.13 to 1.20.4	1.20.5+
Movement, combat, rotation and timer checks	Yes	Yes	Yes
Item scan: names, lore, enchantments, click events, injection strings	Yes	Yes	Yes
Item attribute modifier checks	No	Yes	Yes
Reach against mobs and other non player targets	No	Yes	Yes
Attribute audit (scale, step, gravity, jump, reach)	No	No	Yes
Reach follows the player's interaction range attribute	No	No	Yes

Tested so far: builds and passes its unit tests. Not yet run on every server version, so tell me if something misbehaves on yours.

Commands and permissions

Commands (alias: /arb)

Command	What it does
`/arbiter alerts`	Toggle your alerts
`/arbiter profile <player>`	Risk per category, verdict, latest findings
`/arbiter inspect <player>`	Tracked state, exemptions, held item class
`/arbiter violations <player>`	Last 15 findings
`/arbiter debug <player>`	Live stream of findings for one player
`/arbiter checks`	Checks, status and counts
`/arbiter authorize [fingerprint]`	Approve the held item or a fingerprint
`/arbiter reload`	Reload the config
`/arbiter test`	Quick self test

Permissions

Permission	Default
`arbiter.admin`	op
`arbiter.alerts`	op
`arbiter.profile`	op
`arbiter.debug`	op
`arbiter.reload`	op
`arbiter.authorize`	op
`arbiter.bypass`	nobody
`arbiter.items.command`	nobody

Config

alerts:
  min-confidence: 0.40
actions:
  setback-at: 0.65
  kick-at: 0
  punish-at: 0
  punish-command: ""
evidence:
  half-life-seconds: 20
checks:
  disabled: []
item-security:
  enabled: true
  block-dangerous: true

Every option and its default is listed in the generated config.yml.

For plugin developers

Add softdepend: [Arbiter] and use the API on the main thread.

ArbiterAPI.exempt(player, CheckType.MOVEMENT, 3000, "grapple hook");
ArbiterAPI.addExpectedVelocity(player, 1.2, 1500, "dash");
ArbiterAPI.registerMovementProvider(p -> myPlugin.controls(p));
ArbiterAPI.authorizeItem(item, "MyPlugin");
ArbiterAPI.registerItemPolicy(item -> myPlugin.isMine(item));
ArbiterAPI.getRisk(player);

Good to know

Small speed boosts of about 10% or less over vanilla are inside the safety margin and are not flagged on purpose. Bukkit does not show player input, so Arbiter uses a cautious upper limit.
Items are read through the Bukkit API. Data the API can't see can't be inspected.
Bedrock players through Floodgate are skipped by the rotation check.
Skill and ability plugins that move players or deal damage should use the API exemptions.

Reporting bugs

Include your server software and version, plus the output of /arbiter profile <player> and /arbiter checks.

Source, issue tracker and wiki links will be added here once they exist.

Arbiter AntiCheat