Polydex2REI
Bridging the Gap Between Polymer and REI — Let Your Recipes Be Seen
📦 What is Polydex2REI?
Polydex2REI is a compatibility addon that connects Polymer and REI (Roughly Enough Items), enabling full support for virtual items and custom recipes defined by Polydex.
By default, REI cannot recognize Polymer’s server-side virtual items, leading to missing entries in recipe viewers and item lookups. Polydex2REI fixes that.
🔧 Features
- 📘 Supports custom recipes registered via the Polydex API
- 🔄 Synchronizes item lookup actions — clicking or keypress correctly opens the recipe page
- 💡 Works with both server-side and client-side virtual items
- 🌐 Requires both sides installed to function properly
❓ Why Use It?
If you're a modpack creator or developer using Polymer to register virtual items (e.g. recipe placeholders, guide items, UI buttons), you’ve likely run into the issue: REI can’t find them. This addon solves that cleanly — no extra setup, just plug and play.
🧩 Requirements
- Polymer
- REI
- Polydex
- Packet-Fixer
- Must be installed on both client and server
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as polydex2rei+1.21.11-1.0.3.jar — drop this file into the mods folder
- Download size: 1.7 MB
- Download link checked 31 Aug 2026 — working
These come from our own check of the pack file, not from the source page.