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GuardAC

guardac.net

Free plan Open source WebAPI
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Spec score 8.4 #2 of 57 in Minecraft Anti-Cheat Plugins

What it is

GuardAC is a cloud anti-cheat for Minecraft servers that looks for KillAura, aim assist, and unusual combat crosshair movement. It runs server-side, so players install nothing. During fights, the plugin sends a short set of crosshair-movement numbers to the cloud rather than video. The system learns a player's usual mouse movement and can flag changes in that style during a session. Staff receive alerts with a player name and score, and can handle punishment manually or automate it. Configurable thresholds range from alert-only operation to automatic bans. Listed enforcement actions include logs, kicks, bans, broadcasts, console commands, and optional combat suppression; replay analysis is also listed. The plugin supports Paper, Spigot, Purpur, and Folia servers running Minecraft 1.16 or newer. Supported servers require Java 17 or newer; Minecraft 26.1 and 26.2 require Java 25. The service combines a server plugin with a cloud API accessed using an API key. The free plan is listed at free, and a trial key is issued after sign-up without a card.

Spec sheet

What it does
GuardAC is a cloud anti-cheat service for Minecraft that analyzes combat crosshair movement to detect KillAura and aim assist.Read 14 Oct 2026 · guardac.net
Purpose
GuardAC is a cloud anti-cheat for Minecraft that detects KillAura and aim assist from how players move the crosshair in combat.Read 30 Sep 2026 · guardac.net
Support
Support is offered through Telegram, Discord, GitHub issues, and the community site.Read 14 Oct 2026 · guardac.net
Alert-only mode
Administrators can run alerts without automatic punishment while evaluating detection accuracy.Read 14 Oct 2026 · github.com
API access
The service uses a cloud API authenticated by an API key configured in the Minecraft plugin.Read 14 Oct 2026 · guardac.net
Automation
Automation can apply punishments ranging from kicks to bans with an animation.Read 30 Sep 2026 · guardac.net
Build requirements
Building from source requires JDK 21 or newer and Gradle produces the plugin jar in build/libs.Read 14 Oct 2026 · github.com
Cross-server reputation
The plugin includes cross-server reputation sharing for suspected cheaters.Read 14 Oct 2026 · github.com
Data collected
GuardAC collects account identifiers, API-key and plan data, server and browser technical data, player identifiers, detection events and support interaction history.Read 30 Sep 2026 · guardac.net
Data sharing
The privacy policy says collected data is shared only when legally required, needed for payment processing, or authorized by the user.Read 14 Oct 2026 · guardac.net
Detection data
During fights, the plugin sends a short list of crosshair-movement numbers rather than video to the GuardAC cloud.Read 30 Sep 2026 · guardac.net
Detection method
The plugin sends numerical crosshair-movement data to the cloud neural network, which returns a cheating probability.Read 14 Oct 2026 · guardac.net
Documentation depth
The repository documents installation, configuration files, commands, permissions, placeholders, build steps, dependencies, and supported server versions.Read 14 Oct 2026 · github.com
Free access
A key is issued immediately after sign-up for the free trial, and no card is required.Read 30 Sep 2026 · guardac.net
Independent marketplace status
BuiltByBit listed GuardAC version 1.8 on 24 August 2026 as open source, DRM-free, unobfuscated, and not yet rated.Read 14 Oct 2026 · builtbybit.com
Independent release date
Mineleak lists the resource as created and first released on 16 July 2026.Read 14 Oct 2026 · mineleak.pro
Installation
Installation consists of downloading one jar, placing it in the server plugins directory, starting once, entering the API key, and running /guard reload.Read 14 Oct 2026 · guardac.net
Java requirements
Supported servers require Java 17 or newer; Minecraft 26.1 and 26.2 require Java 25.Read 30 Sep 2026 · guardac.net
KillAura detection
The product targets unusually smooth or mechanically consistent aiming associated with KillAura.Read 14 Oct 2026 · guardac.net
Licence
The GuardAC plugin repository distributes the software under GNU GPL version 3.0.Read 14 Oct 2026 · github.com
Limit: cloud dependency
The plugin requires the GuardAC cloud API and an API key whenever aim checking is enabled.Read 14 Oct 2026 · github.com
Live monitoring
Commands provide live combat monitoring, suspect menus, player profiles, recent results, history, logs, statistics, and health checks.Read 14 Oct 2026 · github.com
Notable update
The setup page states that the same jar supports Minecraft 26.1 and 26.2, with Java 25 required for those versions.Read 14 Oct 2026 · guardac.net
Notifications
The independently listed product description advertises Telegram and Discord notifications plus cross-server alerts.Read 14 Oct 2026 · builtbybit.com
Paid terms
Paid plans can be purchased for 1, 3, 6 or 12 months using SBP or cryptocurrency, and promo codes are supported.Read 30 Sep 2026 · guardac.net
Personalization
The plugin learns how a player normally moves the mouse and flags changes in that style during a session.Read 30 Sep 2026 · guardac.net
PlaceholderAPI integration
GuardAC registers its own PlaceholderAPI expansion automatically when PlaceholderAPI is installed.Read 14 Oct 2026 · github.com
Player installation
Players install nothing because the anti-cheat runs server-side and in the cloud.Read 30 Sep 2026 · guardac.net
Player modeling
GuardAC learns each player's normal mouse-movement style and flags abrupt style changes during a session.Read 14 Oct 2026 · guardac.net
Praise: free availability
A Mineleak reviewer rated the resource 5.00 out of 5 and praised that it appeared well made while being free, although the reviewer had not yet tested it in operation.Read 14 Oct 2026 · mineleak.pro
Punishments
The plugin supports configurable punishment ladders, animations, and automated actions such as kicks and bans.Read 14 Oct 2026 · github.com
Rating on Mineleak
5.00 out of 5 from 1 reviewRead 14 Oct 2026 · mineleak.pro
Repository activity
The public GitHub repository shows 342 commits, 4 stars, 1 fork, and one open issue.Read 14 Oct 2026 · github.com
SDKs
No separate SDK is documented; the published integration method is the Minecraft plugin calling the cloud API with a key.Read 14 Oct 2026 · guardac.net
Security controls
The privacy policy says the administration uses password hashing and access control and does not guarantee absolute security for internet transmissions.Read 14 Oct 2026 · guardac.net
Security data practices
The privacy policy says GuardAC collects account, API-key, server IP, browser, player identifier, detection-event, and support-interaction data.Read 14 Oct 2026 · guardac.net
Self-hosting
The plugin source is public, but the terms identify the cloud API, neural-network model, and backend as closed components.Read 14 Oct 2026 · guardac.net
Server-side operation
Players do not install anything because detection runs through the server plugin and GuardAC cloud.Read 14 Oct 2026 · guardac.net
Service components
The service consists of a game-server plugin and a cloud API accessed with an API key.Read 30 Sep 2026 · guardac.net
Staff workflow
Staff receive alerts containing the player name and score, while punishment can remain manual or be automated.Read 30 Sep 2026 · guardac.net
Supported servers
The plugin runs on Paper, Spigot, Purpur and Folia servers from Minecraft 1.16 onward.Read 30 Sep 2026 · guardac.net
System requirements
Supported servers are Paper, Spigot, Purpur, or Folia on Minecraft 1.16 or newer with Java 17 or newer; Minecraft 26.1 and 26.2 require Java 25.Read 14 Oct 2026 · guardac.net
Terms limitation
The terms disclaim guarantees of uninterrupted availability, suitability, or specific results and provide only limited case-by-case refunds requested within 24 hours.Read 14 Oct 2026 · guardac.net
Thresholds
Thresholds can be configured from alert-only operation to strict automatic bans.Read 30 Sep 2026 · guardac.net
Web dashboard
The independently listed product description says the web panel shows player statistics and check history and allows website bans.Read 14 Oct 2026 · builtbybit.com
WorldGuard and Geyser handling
Geyser Bedrock players are excluded automatically and WorldGuard regions can be excluded through configuration.Read 14 Oct 2026 · github.com

Plans and prices

Free Free free key · no card required · limits not published Read 14 Oct 2026 · guardac.net

Every GuardAC plan and price →

Strong points and limits

Strong points

  • Players do not need to install anything
  • Alerts include a player name and score
  • Thresholds range from alerts to automatic bans
  • Multiple enforcement actions are listed
  • Free trial key requires no card

Limits

  • Supported servers require Java 17 or newer
  • Minecraft 26.1 and 26.2 require Java 25
  • Support questions are handled through Telegram
  • Internet-transmitted data has no absolute security guarantee

Who it suits

GuardAC suits Minecraft server operators using Paper, Spigot, Purpur, or Folia who want combat detection with staff alerts or automated enforcement. It is relevant to administrators who want thresholds ranging from alert-only to automatic bans.

GuardAC in depth

Read the full write-up

GuardAC is a Minecraft server anti-cheat built around combat-movement detection, for operators who want to monitor suspicious play without requiring player installs. Its useful distinction is the choice between staff-led review and automated action; servers looking for broader cheat coverage should consider a different fit.

Overview

A server plugin works with GuardAC’s cloud API to identify KillAura, aim assist and unusual combat crosshair movement. The focus is deliberately narrow: it can give moderators signals about combat behavior, but it is not a general-purpose answer to every kind of cheating.

During fights, the plugin sends a short set of crosshair-movement numbers rather than video. GuardAC learns a player's normal mouse movement and flags sharp changes during a session. Players need no anti-cheat installation, which removes a setup step for them; server operators still need to install and configure the plugin and connect it to the cloud service with an API key.

Key features

Combat detection and replay analysis: Coverage includes KillAura, aim assist, abnormal combat crosshair movement and sharp shifts in player movement style. Replay analysis is supported, useful for review alongside detection signals.

Staff alerts: Alerts show the player name and score, with logs for moderation workflows. That makes alert-only use a practical starting point for teams that want to assess signals before imposing penalties.

Configurable enforcement: Thresholds range from alert-only operation to strict automatic bans. Available actions include kicks, bans, broadcasts and console commands, plus optional combat suppression. This flexibility suits servers with a defined moderation policy; automated punishment can be too aggressive for teams that prefer a human decision on each case.

Pricing

GuardAC has a free plan at free, and a free trial is offered. A key is issued immediately after sign-up for the trial, with no card required. That lowers the barrier to evaluating the plugin before committing to paid service.

Paid plans can be purchased for 1, 3, 6 or 12 months, using SBP or cryptocurrency; promo codes are supported. The free plan is the clear starting point for operators who want to try the service, while a paid term is for continued use beyond the free access. The plan details do not establish what additional entitlements paid plans include, so compare the offered terms before choosing a duration.

Platforms

The service combines a game-server plugin with a cloud API, and its platform coverage is given as API and web. The plugin supports Paper, Spigot, Purpur and Folia servers running Minecraft 1.16 and newer. Supported servers require Java 17 or newer; Minecraft 26.1 and 26.2 require Java 25, a version constraint operators should check before deployment.

Who it's for

GuardAC is best suited to Minecraft server operators who want combat-focused detection, no player-side install, and control over whether suspicious behavior produces an alert or an automatic punishment. It is less suitable for operators seeking an all-category anti-cheat or a workflow that avoids a cloud API.

GuardAC collects account identifiers, API-key and plan data, server and browser technical data, player identifiers, detection events and support interaction history. It says it does not share collected data except when legally required, needed for payment processing or authorized by the user. Its administration describes password hashing and access control as security measures, while not guaranteeing absolute security for data sent over the internet. Support questions go through Telegram at @palasscq.

Pros and cons

Pro: Players install nothing, while server operators can use the plugin across Paper, Spigot, Purpur and Folia from Minecraft 1.16 onward.

Pro: Alert-only thresholds and a range of enforcement actions let staff match responses to their moderation policy.

Con: Detection is centered on combat movement, so servers needing broad cheat coverage will need another approach.

Con: Cloud analysis requires the server plugin to send detection numbers to GuardAC’s API, which may not suit operators avoiding cloud-dependent services.

Alternatives

For a broader comparison, see Minecraft Anti-Cheat Plugins. MLSAC is another freemium option with a free Beginner plan that includes its Mini model, and runs on web and Windows. Shard is worth considering if open-source software, self-hosting or contributing on GitHub matters; its free plan is free and includes 5 credits per month.

Intave may suit operators seeking a free movement- and combat-detection plan that explicitly excludes combat automation detection, build automation detection and priority support. AntiGuard is a free MIT-licensed option for Paper or Purpur 1.20.x with Java 17. CheckHacks is free permanently, with donations optional and no free trial.

GK AntiCheat is a free plugin whose SpigotMC listing names hackerG7 as its author. Nimbus AntiCheat is free and lists 43 checks, Paper 1.21.8 support, per-check punishments, player reports, staff inspection tools and Discord webhook notifications. NoCheatPlus is a free Minecraft Bukkit/Spigot server plugin under GPL-3.0.

Verdict

Choose GuardAC if your Minecraft server needs combat-focused detection without player installs and you want to begin with alerts before deciding how much to automate. Its main limitation is the same focus that makes it clear: it targets combat behavior, not every cheat category, so operators needing wider coverage should look elsewhere.

Verdict

GuardAC pairs a server plugin with cloud analysis and configurable responses to combat detections. Server operators should check Java requirements and decide whether alerts or automated punishments fit their workflow.

Where Specifiction places it

Alternatives to GuardACAll alternatives →