- Loaders
- Fabric
- Downloads on Modrinth
- 2.9K
- Followers on Modrinth
- 6
- versions
- 5
- Updated
- March 17, 2026Mar 17
- Published
- in 2025
At a glance
Works both in the game and on the server — install where you need it
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
FAQ
How to install Polydex2REI?
Install Fabric for your Minecraft version, download Polydex2REI for the same version and loader, put the file into the mods folder and launch the game with the loader profile.
Which Minecraft versions does Polydex2REI support?
Polydex2REI has builds for Minecraft 1.21.7–1.21.8, 1.21.10–1.21.11.
Is Polydex2REI needed on the server?
Works on either side — install it in the game, on the server, or both
More mods by this author
Gensokyo: Reverie of Lost Dreams↓ 10.7K
PolyMc-Extra↓ 1K
Polydex2EIV↓ 891Often needed together
Roughly Enough Items (REI)↓ 27.4M
Polymer↓ 4.5M
Polydex↓ 90.2K