JEI / REI Trades
Few things slow down a Minecraft session like standing in front of a villager and guessing what profession or level will unlock the trade you actually need. JEI / REI Trades solves that problem by feeding real trade data directly into the recipe viewer you already use, so every offer, price, and unlock condition is visible before you spend a single emerald.
This add-on works alongside Just Enough Items (JEI) or Roughly Enough Items (REI), the two most popular recipe and item browsers in the modding scene. Instead of digging through wikis or trial-and-error breeding, you simply open the overlay and browse trades the same way you browse crafting recipes.
What JEI / REI Trades Actually Shows
The mod reads trade information straight from the server's game data, which means what you see is what your save actually uses. That includes villager professions, trade levels, input and output stacks, and the experience or emerald costs attached to each offer. Because it hooks into the standard Minecraft trade system, it also picks up trades added by other mods without those mods needing to write a single line of compatibility code.
That last point matters more than it first appears. Any mod that registers trades through the vanilla system is automatically supported, so large modpacks with dozens of custom villagers, wandering traders, or profession overhauls usually work out of the box.
Supported Versions and Loaders
JEI / REI Trades is built for modern Minecraft releases and ships in both Forge and Fabric builds, covering the 1.16 through 1.21 era depending on the release you pick. If you grab the Fabric version, remember that Fabric API is a required dependency alongside JEI or REI itself. Forge users only need the matching JEI build for their game version.
- Forge builds pair with Just Enough Items
- Fabric builds pair with either JEI or Roughly Enough Items, plus Fabric API
- Client-side install is mandatory; server-side install is strongly recommended
- Works with any mod that uses the standard trade registry
Multiplayer and Server Behavior
Here is the catch worth understanding before you download JEI / REI Trades: the trade data lives on the server, not the client. If the mod is not present on the server, your client cannot pull fresh information, and the trade tab will stay empty while you play online.
There is a workaround. Join a singleplayer world first, let the mod cache the trade data, then connect to the multiplayer server. The cached entries remain visible during that session, which is handy for servers where you cannot add mods. Installing it on both sides is still the cleanest solution and gives you accurate, up-to-date results at all times.
Because the mod is entirely optional on the client, you can join servers that do not run it without any conflict, and servers can run it without forcing players to install anything.
How to Install JEI / REI Trades
Installation follows the usual modding routine. First, confirm your Minecraft version and loader. Next, place the matching JEI or REI jar in your mods folder, add Fabric API if you are on Fabric, then drop in the JEI / REI Trades jar. Launch the game and open your recipe viewer; a new trade category should appear in the sidebar.
If you would rather skip manual file juggling, the foxygame.net launcher bundles JEI / REI Trades in its add-on catalog, so you can enable it with one click and let the launcher handle version matching and updates automatically. That approach removes the most common source of crashes, which is a mismatched loader or game version.
Quick Troubleshooting
- No trade tab visible: check that JEI or REI is installed and loading correctly
- Empty trade list on a server: the mod is likely missing server-side, so try the singleplayer cache trick
- Game crashes on startup: verify Fabric API is present for Fabric builds
- Missing modded trades: the source mod probably uses a custom trade handler instead of the vanilla system
Final Thoughts
JEI / REI Trades is one of those small quality-of-life additions that quietly changes how you play. Trading stops being a gamble and becomes a lookup, whether you are hunting a specific enchanted book, planning an emerald farm, or exploring a modpack full of custom merchants. For anyone already running JEI or REI, adding this companion mod costs almost nothing and pays off every time you walk into a village.