ModsFinder

JEI -Just Enough Comprehension (JEC)

by DomeGnome

Players who open JEI in a fresh world find its item list empty, and JEC is the addon that fills it only as items are actually discovered.

ForgeNeoForgeClient-side onlyMIT LicenseOpen source1.20.1 – 1.21.1

What it does

JEC is an addon for Just Enough Items (JEI) that changes how the item and fluid lists fill up. Items, fluids, recipes and enchanted books are hidden until the player has come across them in the world, so the list grows gradually with play. The discovery rules are set by a series of toggles, letting a server or a player choose how strict the tracking is.

The mod requires Just Enough Items (JEI) to run. It is client-side only, so servers do not need it and players join without installing it. Files are published for Forge and NeoForge; the Forge build covers 1.20.1 and 1.21.1, and the NeoForge build targets 1.21.1. The code is open source under the MIT License, and the source code and issue tracker are public.

Key features

  1. Gradual item discovery

    Items enter the JEI list when the player picks them up or otherwise comes across them, so the list reflects what the player has encountered.

  2. Hidden recipes

    Recipes stay out of JEI until their result has been discovered, and a toggle decides whether undiscovered items are removed entirely or only their recipes are hidden.

  3. Fluid discovery by wading or bucket

    Fluids can count as discovered when the player stands in them or holds a bucket of them, and filled containers can reveal their empty forms.

  4. Subtype tracking

    Enchanted books and potions can be tracked per variant, so finding one Sharpness book reveals only that enchantment, and one Night Vision potion reveals only that potion.

Compatibility

Latest build for each game version and loader.

1.21.1Not available1.0.0
1.20.11.0.8Not available
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Just Enough Items (JEI)View Items and Recipes
Required

Use cases

Surviving a modded pack

Players in large modpacks can keep JEI short and focused on what they have actually seen, instead of a complete list of every item.

Who it’s for: Players who want JEI to act as a record of their own progress, and modpack builders who want discovery to shape what is shown in the item list.

Questions

Does Just Enough Comprehension need Just Enough Items?

Yes. Just Enough Items (JEI) is required. JEC is an addon to it and changes what JEI displays.

Does the server need Just Enough Comprehension?

No. Servers do not need it; each player installs it for their own game.

Can discoveries carry over between worlds?

The Discovery Scope option sets whether each world tracks its own discoveries or a single record is kept across worlds, and a new world can start with an empty record.

In the catalog

JEI -Just Enough Comprehension (JEC) is one of 29,952 Game mechanics mods on ModsFinder, and one of 13,316 Game mechanics mods for Forge. 32,366 mods support Minecraft 1.21.1.

Game mechanics mods29,952Forge modsMods for 1.21.132,366

More from DomeGnome

All projects
ItemPhysics - Fire Starter Add on1.21.1 – 1.21.11

Similar mods

Better Third Person1.16.4 – 1.21.8Sounds1.20 – 26.3Cut Through1.18.2 – 26.3Bad Wither No Cookie - Reloaded1.12.2 – 1.21.10Client Tweaks1.12.2 – 26.3Double Doors1.16.5 – 26.3

What the author says

JEC is an addon to JEI making the items appear dynamically when you discover and interact with them in the world. You spawn into the world not knowing of any items, as you interact with items or fluids they gradually fill out your JEI catalogue.
DomeGnome, on the Modrinth page

Official listing

Owner
DomeGnome
Published
2026-06-25
Updated on Modrinth
2026-08-30
Facts verified
2026-10-15

Tags

Game mechanics
Open on ModrinthCompare