Clearcheck
by tomas65107
Clearcheck is a NeoForge management tool that lets server administrators check which mods and texture packs each connected player has installed, and which commands they run.
What it does
Server administrators use Clearcheck to monitor the mods and texture packs installed on a player's client, and to watch commands that players execute. The tool is meant for server moderation, enforcing rules and reporting that happens in the open, so the checks are visible to the people being checked.
Clearcheck also handles authentication for servers that run in offline mode, where player identity is not verified by the account service. It gives a way to authenticate players on those servers. The mod is client and server: the server and every player need it. It is released under the GNU Lesser General Public License v2.1 only, so the source code is open source, and public links to the code, issue tracker and wiki are available. The first file, 1.0.1 for 1.21.1, was published on 2026-08-25 on the alpha channel.
Key features
Mod and texture pack monitoring
The server can see which mods and texture packs each player has installed, so administrators can compare a client against the server's rules.
Command execution watcher
Commands executed by players are tracked, giving administrators a record of actions taken on the server.
Offline-mode player authentication
Players on offline-mode servers can be authenticated, which covers servers that do not use the account service for login.
Rule enforcement with transparency
Checks run openly, with administrators able to see the results, and the mod's source code is available to open for inspection.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server owners and administrators who run NeoForge servers for 1.21.1 and want to check installed mods, texture packs or commands, or to authenticate players on offline-mode servers.
How it compares
Offline Mode is a NeoForge mod for 1.21.11, also client and server and open source under the MIT License, so it targets a different game version than Clearcheck. NullPass is a server-side only NeoForge mod for 1.21.1 under the MIT License and not open source, so players join without installing it. SeamlessLogin is a client-side only NeoForge mod for 1.21.8, open source under the MIT License, and it is a client mod rather than a server tool.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Clearcheck | NeoForge | 1.21.1 | Client and server | 2026-08-25 |
| Offline Mode | NeoForge | 1.21.11 | Client and server | 2025-12-31 |
| NullPass | NeoForge | 1.21.1 | Server-side only | 2026-08-10 |
| SeamlessLogin | NeoForge | 1.21.8 | Client-side only | 2026-04-12 |
Questions
Does Clearcheck need to be installed on both sides?
Which NeoForge version does Clearcheck support?
Can Clearcheck be used on servers running in offline mode?
In the catalog
Clearcheck is one of 8,016 Management mods on ModsFinder, and one of 2,689 Management mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from tomas65107
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What the author says
A server moderation tool providing rule enforcement and advanced account authentication. Clearcheck allows server administrators to monitor players' installed mods and packs and provides a secure, instant and convenient way to authenticate players even on offline-mode servers. All with transparency.
Official listing
- Modrinth page
- modrinth.com/mod/clearcheck
- Owner
- tomas65107
- Published
- 2026-08-25
- Updated on Modrinth
- 2026-08-25
- Facts verified
- 2026-10-15