ProxyTracer

Blocks players joining with VPNs or proxies on Paper, Velocity, and Bungee.

!Kick Screen

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

1. Get a free API key at proxytracer.com/dashboard.
2. Put the JAR in your plugins/ folder.
3. Start the server once.
4. Run /proxytracer set your_key_here in game or console.
5. Test it with /proxytracer status.

Previews

Game kick screen	Console log
!Kick	!Console

Links

• Website & API Keys: proxytracer.com
• Source Code: GitHub Repository