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CheckHacks
What it is
CheckHacks is a free, self-hosted server-side anticheat for Minecraft servers. It detects client-side mods and hack clients by briefly placing signs with special translation keys and checking how a player's client responds; players do not need to install a client mod. Administrators can choose METEOR, TRANSLATE, and KEYBIND detection modes for individual mods, add custom detections in checkhacks.yml, and use custom commands or alerts for results. DoubleCheck repeats scans that report DETECTED or PROTECTED to help reduce false positives. The plugin can also check players after Grim, Vulcan, Spartan, or Matrix flags them. Its browser-based editor runs on the game server and supports scan-history review, player lookups, and starting checks. Access uses one-time tokens generated with /cheditor, and scan records are saved in a built-in SQLite database. Named platforms include Paper, Spigot, and Folia; Minecraft 1.21+ is listed. The project is MIT-licensed, and donations are optional. The maker notes that client patches can temporarily block this detection method for affected clients.
For and against
For
- Players need no client mod installation.
- Custom mod detections can be added.
- Built-in SQLite stores scan history.
- Browser editor uses one-time access tokens.
Against
- Client patches can temporarily block detection.
- Listed Minecraft support starts at version 1.21+.
The verdict
CheckHacks combines several detection modes with server-side administration tools and anticheat integrations. Its key limitation is that client patches can temporarily prevent detection for affected clients.
Who it suits
It suits Minecraft server administrators seeking server-side checks for client mods and hack clients without requiring players to install a mod. It is listed for Paper, Spigot, and Folia servers running Minecraft 1.21+.
Plans and prices
CheckHacks
Always free · donations optional
Read 30 Sep 2026 · github.com
On the record
- Anticheat integrations
- It hooks into Grim, Vulcan, Spartan, and Matrix to check players after those anticheats flag them.github.com · read 30 Sep 2026
- Compatibility
- The Modrinth listing names Bukkit, Folia, Paper, Purpur, and Spigot as supported platforms.modrinth.com · read 30 Sep 2026
- Custom detections
- Administrators can add custom mods to detect in checkhacks.yml.github.com · read 30 Sep 2026
- Detection method
- The plugin briefly places signs with special translation keys and checks how the player's client responds.github.com · read 30 Sep 2026
- Detection modes
- It supports METEOR, TRANSLATE, and KEYBIND detection modes, selected for each mod.github.com · read 30 Sep 2026
- Discord integration
- It supports separate Discord webhooks for hack checks and language checks, with a Components V2 option.github.com · read 30 Sep 2026
- False positive checks
- DoubleCheck repeats scans that return DETECTED or PROTECTED to help reduce false positives.github.com · read 30 Sep 2026
- License
- The project is licensed under MIT.modrinth.com · read 30 Sep 2026
- No client install
- Players do not need to download or install a client mod.github.com · read 30 Sep 2026
- Notable limitation
- The maker says mod developers can patch clients to block the detection method, which can temporarily stop detection for those clients.github.com · read 30 Sep 2026
- Purpose
- CheckHacks is a server-side anticheat that detects client-side mods and hack clients using the Sign Translation Vulnerability.github.com · read 30 Sep 2026
- Scan history
- Scans are saved in a built-in SQLite database without requiring separate setup.github.com · read 30 Sep 2026
- Support
- The maker directs users to Discord for help, feature requests, and requests to add mods.github.com · read 30 Sep 2026
- Web editor
- The web editor runs on the game server and lets administrators review scan history, look up players, and start checks in a browser.github.com · read 30 Sep 2026
- Web editor access
- The web editor uses one-time tokens generated with /cheditor rather than a shared password.github.com · read 30 Sep 2026
