PacketInspector
A powerful in‑game tool for viewing and analyzing Minecraft network packets, complete with filtering, history, and NBT inspection.
Screenshots
About this Mod
PacketInspector
PacketInspector is a developer‑focused in‑game tool for analyzing Minecraft’s client‑side network packets.
It provides real‑time packet monitoring, structured field inspection, NBT viewing, and raw Java/JSON representations to support debugging and protocol research.
Features
- Live packet stream with filtering and history
- Detailed field inspection for record and classic packets
- Built‑in NBT and ItemStack component viewer
- Raw Java and JSON editing modes
- Packet replay for development and testing workflows
Usage
| Key / Action | Function |
|---|---|
| F6 | Open Packet Inspector Overlay |
| Right Click | Open Context Menu |
| Shift + Scroll | Fast scroll through the packet list |
Purpose
PacketInspector is designed for mod developers and protocol researchers who need a clear, structured view of client‑side packet data during development.
Notes
Usage should always comply with server rules.
Licensed under MIT.
Available Versions
How to Install PacketInspector on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "PacketInspector". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10, 1.21.9 (+10 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
PacketInspector server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is PacketInspector compatible with fabric?
PacketInspector officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with PacketInspector – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if PacketInspector consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install PacketInspector with just one click on your server.