Polymer

Polymer

Library for creating better server side content!

by
3.7M Downloads
fabricquiltlibrary
Rent Server with this Mod

About this Mod

Polymer

It's a library for creating server side content, that work for player's without mods or (required) resource packs!
You can create blocks, items and entities, that not only will work fully on server side (and singleplayer), but also
are represented on server the same as normal (vanilla/modded) ones (unlike bukkit/spigot ones, that are stored as vanilla block).

This library also should work correctly with other, non-polymer mods and PolyMC!

For players:

This library/mod includes few small utilities that can be useful for playing on servers using Polymer.

Few things it does on the client:

For server owners/mod pack makers:

Any mod using this library shouldn't be required on the client side! However, as stated above, there
are few small quality of life things added with it. So you might want to recommend it or include with
your mod pack.

If you have a server and polymer based mods you are using include a resource pack, you might want since version 0.2.5
"packed/all" version of polymer contains AutoHost module, allowing you to setup automatic building and sending of packs
to clients.

If you use 1.18.x or older, use this instead: https://github.com/aws404/polypack-host

For mod developers:

All information about usage can be found at https://polymer.pb4.eu!

What this library/mod doesn't do

This mod doesn't convert existing mods to server side ones. While it's possible to do so with manual coding,
for that you might want to use PolyMC as long as you don't
need to use regular mods on the client (for example with a modpack).

Commands

  • /polymer - Display about
  • /polymer creative - Opens list of Polymer/Server-Side creative tabs (Available to anyone with creative)
  • /polymer generate - Generates polymer resourcepack as <server/client directory>/polymer-resourcepack.zip

Download

Check list of known mods using Polymer

Available Versions

0.17.3+26.2release
MC 26.2fabric
July 11, 2026
0.17.2+26.2release
MC 26.2fabric
July 7, 2026
0.17.1+26.2release
MC 26.2fabric
June 27, 2026
0.17.0+26.2-rc-2release
MC 26.2-rc-2, 26.2fabric
June 14, 2026
0.16.5+26.1.2release
MC 26.1, 26.1.1, 26.1.2fabric
May 14, 2026

How to Install Polymer 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 (26.2).

3

Install Mod

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

Compatibility

Mod Loaders

fabricquilt

Minecraft Versions

26.2, 26.2-rc-2, 26.1.2 (+60 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Polymer 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 (26.2). You can switch loaders with one click in the panel.

Is Polymer compatible with fabric and quilt?

Polymer officially supports fabric, quilt for Minecraft 26.2, 26.2-rc-2, 26.1.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Polymer – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Polymer 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 Polymer with just one click on your server.

Recommended RAM
4 GBfrom €5.2/mo
Minimum 3 GB | per 8 players
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU Lesser General Public License v3.0 only
Server-side
Required

Supported Versions

26.226.2-rc-226.1.226.1.126.126.1-rc-21.21.111.21.11-rc21.21.11-pre51.21.11-pre4+53 more