Freedom251 › Minecraft anti-cheat plugins
Medusa
What Medusa is
Medusa is a self-hosted Minecraft server plugin for cheat detection and automatic moderation. Its heuristic checks target aimbots, autoclickers, reach exploits, movement anomalies, inventory cheats, protocol violations, and behavior anomalies. The maker says the reach check allows a 0.5-block tolerance and detects cheating without requiring players to install client mods. Server operators can configure tools in game, customize detections, and use a flexible command system. A public API and custom commands allow connections to moderation or punishment systems. Available enforcement actions include alerts, logs, mitigation, and custom commands, with themes for logs and messages. The project is described as a Spigot plugin for Minecraft versions 1.8–1.12.2; tested major versions are listed as 1.7–1.12. Third-party server engines may not be compatible. The plugin is GPLv3 open source. Its listing identifies version 1.5.7, released June 18, 2021, as the last update, while the maker says support ended in 2021. To install it, place the downloaded JAR in the server’s plugins folder; reloading the plugin may cause problems.
Who it suits
Medusa is for operators of compatible Spigot Minecraft servers who want server-side cheat detection and moderation actions without requiring client mods. Its configurable checks, API, and custom commands may suit operators connecting detection to their own moderation or punishment systems.
What it does well
- Detects a broad set of cheat and behavior categories.
- Players do not need client mods for detection.
- Offers in-game configuration and customizable detections.
- Provides alerts, logs, mitigation, and custom commands.
- Public API and custom commands support integrations.
What to know first
- The project listing covers Minecraft versions 1.8–1.12.2.
- Third-party server engines may be incompatible.
- The maker says support ended in 2021.
- Reloading the plugin may cause problems.
Limits
The project listing describes compatibility with Minecraft versions 1.8–1.12.2 and warns that third-party server engines may be incompatible. Support concluded in 2021.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | Minecraft server moderation plugin · Compatible versions: 1.8–1.12 | Free |
As visient.ai lists them, read 9 Oct 2026. The maker's own page has the final word.
Getting started
- Download the plugin JAR.
- Place the JAR in the Minecraft server's plugins folder.
- Use it with a Spigot server running a listed compatible Minecraft version.
- Configure detections and commands in game.
- Avoid reloading the plugin, which may cause problems.
Verdict
Choose Medusa if you run a compatible Spigot server and want configurable server-side detection with moderation actions and integration options. Look elsewhere if you need support or compatibility with server engines beyond those described by the project listing.
Questions
How much does Medusa cost?
The listed Free plan costs nothing. The plugin is open source under GPLv3.
Which Minecraft versions does it support?
The project listing describes Spigot support for versions 1.8–1.12.2. Tested major versions are listed as 1.7–1.12.
Does it require players to install client mods?
No. The maker says Medusa detects cheats without client mods.
What actions can it take?
It can issue alerts, create logs, apply mitigation, and run custom commands.
How is it installed?
Download the JAR and place it in the server's plugins folder. The project cautions that reloading may cause problems.
Is the plugin still supported?
The maker says support concluded in 2021. The listing shows version 1.5.7, released June 18, 2021, as its last update.
Facts from Medusa's own pages
- Client requirements
- The maker says Medusa detects cheats without requiring client mods. · visient.ai, 9 Oct 2026
- Configuration
- The maker describes in-game configuration tools, customizable detections, and a flexible command system. · visient.ai, 9 Oct 2026
- Detection
- It uses heuristic checks to detect cheats including aimbots, autoclickers, and reach exploits. · visient.ai, 9 Oct 2026
- Downloads
- The maker reports more than 26,000 downloads; the project listing shows 29,908 total downloads. · visient.ai, 9 Oct 2026
- Installation
- The project listing instructs users to download the JAR and place it in the server's plugins folder, and cautions that reloading the plugin may cause problems. · spigotmc.org, 9 Oct 2026
- Integration
- The maker says Medusa includes a public API and supports custom commands for integration with moderation or punishment systems. · visient.ai, 9 Oct 2026
- License
- The project listing says Medusa is open source under the GPLv3 license. · spigotmc.org, 9 Oct 2026
- Performance
- The maker says Medusa benchmarked 11.79 times lighter than a leading paid competitor at the time. · visient.ai, 9 Oct 2026
- Purpose
- Medusa is a lightweight, server-side Minecraft anti-cheat and automatic moderation system. · visient.ai, 9 Oct 2026
- Reach check
- The maker says Medusa's reach check has a 0.5-block tolerance. · visient.ai, 9 Oct 2026
- Release status
- The project listing shows version 1.5.7, released June 18, 2021, as its last update. · spigotmc.org, 9 Oct 2026
- Server compatibility
- The project listing describes Medusa as a Spigot plugin for Minecraft versions 1.8–1.12.2 and says third-party server engines may be incompatible. · spigotmc.org, 9 Oct 2026
- Support
- The maker says support concluded in 2021 after more than 80 user tickets were resolved via Discord. · visient.ai, 9 Oct 2026
- Themes
- Medusa includes a theme system for logs and messages. · visient.ai, 9 Oct 2026
Where Medusa stands on Freedom251
- Minecraft anti-cheat plugins#13 of 53
- Minecraft Anti-Cheat Plugins#16 of 57