Packet Sentinel
by edd4adb
Packet Sentinel puts a live packets-per-second readout on the screen, with automatic limits and a stress-testing tool for checking how a connection holds up under heavy traffic.
What it does
Packet Sentinel is a Fabric client mod for Minecraft 1.21 – 1.21.11, built for watching network stability during play. Its main element is an animated bar in the HUD that shows the current packets per second, and the bar changes color from green to orange to red as network load rises. The HUD can be moved to any of the four screen corners, and its text can be drawn with or without a shadow for readability.
The mod can adjust its own packet thresholds automatically, so the connection stays steady without manual tuning, or the player can set the limits by hand and switch Auto-Limit off. An integrated stress test pushes the connection with high traffic so the player can see where it starts to struggle. The configuration screen opens with the P key by default, and every setting applies instantly without a restart.
Packet Sentinel runs only on the client, so players install it and servers need nothing. It is published for Fabric only, across 12 release versions, under All rights reserved, and it is not open source. Its latest file, 1.0.1, targets 1.21.11 and was released on 2026-03-23.
Key features
Animated packet bar
A smooth bar in the HUD displays the current packets per second and updates as traffic changes.
Automatic threshold limits
Packet thresholds adjust on their own to keep the connection stable, and can be replaced with manual values.
Movable HUD and shadows
The readout can sit in any screen corner, and a toggle adds a shadow behind the text.
Built-in stress test
A stress-testing tool sends high packet volume so the player can check how the connection handles the load.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Sentinel&ModGuard is also a Fabric client-side mod for 1.21 – 1.21.11, but it is under All rights reserved, like Packet Sentinel, and is not open source. PacketDump is a client-side Fabric mod for 1.21.8 – 26.2 under the GNU Lesser General Public License v3.0 or later, and it is open source. Firewall is open source under the MIT License for 1.21 – 26.2, and it works on either side, and neither side needs it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Packet Sentinel | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-03-23 |
| Sentinel&ModGuard | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-03-08 |
| PacketDump | Fabric | 1.21.8 – 26.2 | Client-side only | 2026-08-04 |
| Firewall | Fabric | 1.21 – 26.2 | Client or server, optional | 2026-08-27 |
Questions
Does Packet Sentinel need to be installed on the server?
Which Minecraft versions does Packet Sentinel support?
Can Packet Sentinel limit packets automatically?
In the catalog
Packet Sentinel is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
Note: La traduction française de cette description se trouve en dessous de la version anglaise. 🛡️ Packet Sentinel (English) Packet Sentinel is a lightweight and powerful network diagnostic tool for Minecraft Fabric 1.21.x. It allows players to monitor their connection stability in real-time while providing…
Official listing
- Modrinth page
- modrinth.com/mod/packet-sentinel
- Owner
- edd4adb
- Published
- 2026-03-22
- Updated on Modrinth
- 2026-03-23
- Facts verified
- 2026-10-15