ModsJava
ProxyTracer
Block VPN and proxy joins on Paper, Velocity & Bungee. Free plugin + API keys at proxytracer.com/dashboard.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
ProxyTracer
Blocks players joining with VPNs or proxies on Paper, Velocity, and Bungee.
ProxyTracer checks player IPs against the ProxyTracer API during login to stop ban evasion and alt spam.
Features
- Async checks: Runs on Netty network threads, keeping server TPS at 20.0.
- Proxy support: Dedicated JARs for Velocity and Bungee check IPs at the proxy gateway.
- Memory cache: Caches results locally so returning players don't use extra API queries.
- Fail-open: Keeps your server accessible if the API experiences network downtime.
- Discord webhooks: Sends blocked join alerts directly to staff channels.
- Whitelists: Add trusted player names or IPs using simple commands.
Which JAR to install
| Server setup | File | Folder |
|---|---|---|
| Paper / Spigot / Purpur | proxytracer-bukkit-1.3.0.jar |
plugins/ |
| Velocity network | proxytracer-velocity-1.3.0.jar |
plugins/ on Velocity |
| BungeeCord network | proxytracer-bungee-1.3.0.jar |
plugins/ on Bungee |
Setup in 1 minute
- Get a free API key at proxytracer.com/dashboard.
- Put the JAR in your
plugins/folder. - Start the server once.
- Run
/proxytracer set your_key_herein game or console. - Test it with
/proxytracer status.
Previews
| Game kick screen | Console log |
|---|---|
|
 |
Links
- Website & API Keys: proxytracer.com
- Source Code: GitHub Repository
Verified by MCModsHub
- Ships as proxytracer-bungee-1.3.0.jar — drop this file into the mods folder
- Download size: 366 KB
- Download link checked 4 Sept 2026 — working
These come from our own check of the pack file, not from the source page.