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SPECIFICTION
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Grace Anticheat

github.com

Free plan Self-hosted
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Spec score 7.4 #19 of 57 in Minecraft Anti-Cheat Plugins

What it is

Grace Anticheat is a free, self-hosted anticheat for Java Minecraft servers. It targets closet cheating, ghost cheating and blatant hacking through rules-based detection and statistical analysis of player behavior. Servers can run a proxy arrangement with a Velocity plugin and Paper companion plugin, or choose a standalone Paper plugin without Velocity. The proxy setup requires Velocity 3.3.0 or later, Paper 1.19 or later and Java 21 or later; the standalone listing covers Minecraft Java 1.19.x, 1.20.x and 1.21.x. Grace can alert staff in-game and send formatted Discord webhook embeds. Configuration supports teleporting players back on hard alerts, kicking on action alerts and optional automatic bans, disabled by default. Staff commands expose engine status, evidence summaries, alert controls, violation history and configuration reloads. Grace is beta 0.1.0 and actively developed. Its API and related components are open source, while detection logic, model weights and threshold tuning are closed source.

Spec sheet

Purpose
Grace is an anticheat for Java Minecraft servers that targets closet cheating and ghost cheating, and also handles blatant hacking.Read 7 Oct 2026 · github.com
Alerts
Grace can alert staff in-game and send formatted embeds to a Discord channel using a webhook.Read 7 Oct 2026 · github.com
Compatibility
The standalone listing specifies Paper support for Minecraft Java Edition versions 1.19.x, 1.20.x, and 1.21.x.Read 7 Oct 2026 · modrinth.com
Detection
It uses a rules-based detection pipeline and statistical behavioral analysis.Read 7 Oct 2026 · github.com
Enforcement
Configuration supports rubber-banding on hard alerts, kicking on action alerts, and optional automatic bans, disabled by default.Read 7 Oct 2026 · github.com
Proxy architecture
The proxy setup runs as a Velocity plugin with a Paper companion plugin on the backend server.Read 7 Oct 2026 · github.com
Requirements
The proxy setup requires Velocity 3.3.0 or later, Paper 1.19 or later, and Java 21 or later.Read 7 Oct 2026 · github.com
Source availability
The API, event pipeline, data model, and companion plugin are open source, while the detection logic, model weights, and threshold tuning are closed source.Read 7 Oct 2026 · github.com
Staff tools
Commands provide engine status, player evidence summaries, alert controls, violation history, and configuration reloads.Read 7 Oct 2026 · github.com
Standalone option
A standalone Paper plugin is also available and does not require the Velocity plugin.Read 7 Oct 2026 · modrinth.com
Status and support
Grace is beta 0.1.0 in active development; the maker welcomes bug reports and feedback through GitHub Issues.Read 7 Oct 2026 · github.com

Plans and prices

Free Free Free anticheat for Java Minecraft servers Read 7 Oct 2026 · github.com

Every Grace Anticheat plan and price →

Strong points and limits

Strong points

  • Free plan available
  • Rules and behavioral detection
  • Velocity and standalone Paper options
  • Discord and in-game alerts
  • Teleport, kick and ban actions

Limits

  • Beta 0.1.0 release
  • Proxy setup requires Java 21
  • Detection logic is closed source
  • No replay analysis

Who it suits

It suits Minecraft Java server operators who can self-host Paper or Velocity plugins and need configurable detection and enforcement. It is aimed at servers covering closet, ghost and blatant cheating.

Verdict

Grace offers a free self-hosted route to anticheat coverage across supported Paper and Velocity setups. Operators should weigh its beta status, version requirements and partly closed implementation.

Where Specifiction places it

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