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Grace Anticheat
What it is
Grace Anticheat is a free, self-hosted anticheat for Java Minecraft servers. It targets closet and ghost cheating as well as blatant hacking, using rules-based detection and statistical analysis of player behavior. Servers can use a proxy setup, with Grace running as a Velocity plugin and a Paper companion plugin, or choose the 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 Paper on Minecraft Java Edition versions 1.19.x, 1.20.x, and 1.21.x. Grace can notify staff in-game and send formatted Discord embeds through a webhook. Configuration can teleport players back on hard alerts, kick them on action alerts, and optionally ban them automatically; automatic bans are off by default. Staff commands cover engine status, evidence summaries, alert controls, violation history, and configuration reloads. Grace is beta 0.1.0 and in active development. Its API, event pipeline, data model, and companion plugin are open source, while detection logic, model weights, and threshold tuning are closed source.
For and against
For
- Free plan for Java Minecraft servers.
- Proxy and standalone Paper options are available.
- Staff alerts can appear in-game and on Discord.
- Staff commands include evidence summaries and violation history.
Against
- The proxy setup requires Java 21 or later.
- Detection logic and model weights are closed source.
- The project is beta 0.1.0 and in active development.
The verdict
Grace offers server-side detection, staff tools, and configurable enforcement for Java Minecraft servers. Its beta status and closed detection components are important considerations for server operators.
Who it suits
Grace suits operators of self-hosted Java Minecraft servers who want configurable detection and staff alerts. Server admins should check the separate requirements for the proxy and standalone Paper options.
Plans and prices
Free
Free anticheat for Java Minecraft servers
Read 7 Oct 2026 · github.com
On the record
- Alerts
- Grace can alert staff in-game and send formatted embeds to a Discord channel using a webhook.github.com · read 7 Oct 2026
- Compatibility
- The standalone listing specifies Paper support for Minecraft Java Edition versions 1.19.x, 1.20.x, and 1.21.x.modrinth.com · read 7 Oct 2026
- Detection
- It uses a rules-based detection pipeline and statistical behavioral analysis.github.com · read 7 Oct 2026
- Enforcement
- Configuration supports rubber-banding on hard alerts, kicking on action alerts, and optional automatic bans, disabled by default.github.com · read 7 Oct 2026
- Proxy architecture
- The proxy setup runs as a Velocity plugin with a Paper companion plugin on the backend server.github.com · read 7 Oct 2026
- Purpose
- Grace is an anticheat for Java Minecraft servers that targets closet cheating and ghost cheating, and also handles blatant hacking.github.com · read 7 Oct 2026
- Requirements
- The proxy setup requires Velocity 3.3.0 or later, Paper 1.19 or later, and Java 21 or later.github.com · read 7 Oct 2026
- 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.github.com · read 7 Oct 2026
- Staff tools
- Commands provide engine status, player evidence summaries, alert controls, violation history, and configuration reloads.github.com · read 7 Oct 2026
- Standalone option
- A standalone Paper plugin is also available and does not require the Velocity plugin.modrinth.com · read 7 Oct 2026
- Status and support
- Grace is beta 0.1.0 in active development; the maker welcomes bug reports and feedback through GitHub Issues.github.com · read 7 Oct 2026
