AuthlibProxyForServer

AuthlibProxyForServer

Authlib proxy for server

by
2.7K Downloads
fabricutility
Rent Server with this Mod

About this Mod

AuthlibProxyForServer

License
Modrinth Downloads
GitHub Downloads
CurseForge Downloads
MC Versions
Build & Publish
Release

Copyright (c) 2025 Calboot and contributors

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see http://www.gnu.org/licenses/

Conclusion

Authlib proxy for and only for servers

Sets the proxy for contacting Mojang server

Mostly based on Fallen-Breath's template

Links

Usage

  • Install this mod to your server (dedicated only)
  • Start the server
  • Run /authproxy to configure the proxy
{
  "enabled": false, // set to true to enable
  "type": "HTTP", // or SOCKS
  "host": "127.0.0.1", // either IP or host name
  "port": 7897 // [0,65536)
}

EOL

Currently supported versions

Currently, the following Minecraft versions are actively supported with new features and bug fixes

Minecraft Version Support Until
1.14.4 ✔️ Long Term Support
1.15.2 ✔️ Long Term Support
1.16.4-5 ✔️ Long Term Support
1.17.1 ✔️ Long Term Support
1.18.2 ✔️ Long Term Support
1.19.4 ✔️ Long Term Support
1.20-1.20.1 ✔️ Long Term Support
1.20.5-6 ✔️ Long Term Support
1.21-1.21.10 🕒 When Minecraft 27.1 snapshot is released
1.21.11 🕒 To be determined

End-of-life versions

The following Minecraft versions are out of the support range. There's no support for these Minecraft versions, unless some critical bugs occur

Minecraft Version Last Version Release Date

Scheduled to be supported versions

The following Minecraft versions are scheduled to be supported in the later versions

Minecraft Version Support Starts

Available Versions

v0.4.1-mc26.1release
MC 26.1fabric
March 28, 2026
v0.4.1-mc1.21.8release
MC 1.21.6, 1.21.7, 1.21.8fabric
March 28, 2026
v0.4.1-mc1.21.5release
MC 1.21.5fabric
March 28, 2026
v0.4.1-mc1.21.4release
MC 1.21.4fabric
March 28, 2026
v0.4.1-mc1.21.3release
MC 1.21.2, 1.21.3fabric
March 28, 2026

How to Install AuthlibProxyForServer on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1).

3

Install Mod

Open the mod browser in the dashboard and search for "AuthlibProxyForServer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

26.1, 26.1-snapshot-9, 1.21.11 (+22 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

AuthlibProxyForServer 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 (26.1). You can switch loaders with one click in the panel.

Is AuthlibProxyForServer compatible with fabric?

AuthlibProxyForServer officially supports fabric for Minecraft 26.1, 26.1-snapshot-9, 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with AuthlibProxyForServer – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if AuthlibProxyForServer 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.

Rent Modded Server

Install AuthlibProxyForServer with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU General Public License v3.0 or later
Server-side
Required

Supported Versions

26.126.1-snapshot-91.21.111.21.101.21.91.21.81.21.71.21.61.21.51.21.4+15 more