SentinelClient
by PRINCExd
SentinelClient is a Fabric companion mod that pairs with the SentinelAC server plugin to check the game client on the server side.
What it does
Installed on the client, SentinelClient reports to the SentinelAC server plugin so that the server can verify client integrity and flag clients that run modified or hacked code. Detection is handled on the server, and the client mod supplies the data it needs.
The mod can also carry out checks requested by the server. These include point-of-view screenshots taken when the server asks for one, and rotation and mouse movement data that feed the server's click pattern analysis. Transmitted data is compressed and sent in chunks. The mod is distributed for Fabric only, with builds for 1.21.8 and 1.21.9 and version 1.0.0 for 1.21.9 as the latest file. The server needs the SentinelAC plugin, while players may add SentinelClient to provide the extra verification, so either side can skip it without breaking the server's core checks.
Key features
Server-side integrity checks
Lets the server verify client integrity and detect hack clients as soon as they connect and send data.
Requested POV screenshots
Takes point-of-view screenshots when the server requests one, for follow-up on suspicious activity.
Mouse and rotation tracking
Tracks mouse movement and view rotation so the server can run click pattern analysis and rotation verification.
External cheat software scan
Identifies external cheat software running on the player's system, in addition to modified clients.
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 who run the SentinelAC plugin and want client-side data for cheat detection. Players on such a server can install the client mod to support verification.
How it compares
AntiMod is a client-side only mod, released under All rights reserved and published for 1.21. KsAntiCheat runs on client and server under the MIT License for 1.21.1. PointZero also runs on client and server, under All rights reserved, for 1.21.11. ClientBridge runs on client and server for 1.21 – 1.21.10 under All rights reserved. Movement&Security Client mod is client-side only for 1.21 – 1.21.11 under All rights reserved. SentinelClient differs in being server-required, with the detection logic on the server and the client mod serving as its companion.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| SentinelClient | Fabric | 1.21.8 – 1.21.9 | Server required, client optional | 2026-01-16 |
| AntiMod | Fabric | 1.21 | Client-side only | 2025-08-30 |
| KsAntiCheat | Fabric | 1.21.1 | Client and server | 2026-08-10 |
| PointZero | Fabric | 1.21.11 | Client and server | 2026-03-08 |
| Movement&Security Client mod | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-01-17 |
| ClientBridge | Fabric | 1.21 – 1.21.10 | Client and server | 2025-10-30 |
Questions
Does SentinelClient need the SentinelAC server plugin?
Do players have to install SentinelClient?
Which game versions does SentinelClient support?
In the catalog
SentinelClient is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 13,427 mods support Minecraft 1.21.9.
Similar mods
What the author says
The SentinelAC Client is a companion Fabric mod that works alongside the SentinelAC server plugin to provide enhanced cheat detection. It enables server-side verification of client integrity and instant detection of hack clients. Identifies external cheat software running on the system.
Official listing
- Modrinth page
- modrinth.com/mod/sentinelclient
- Owner
- PRINCExd
- Published
- 2026-01-16
- Updated on Modrinth
- 2026-01-16
- Facts verified
- 2026-10-15