Hullspark Item Pickup Filter

The problem You clear a few zombies and your hotbar is full of rotten flesh. You walk past a spider and pick up spider eyes you will never use. Vanilla picks up everything you touch, so the slots you need get clogged.

Where you see it There is no menu, no key and no HUD. You see it on the ground and in your hotbar. Walk over an item on your list and nothing happens: it stays lying where it is. Walk over anything else and it goes into your hotbar exactly as in vanilla.

What you can do

• Do nothing. Out of the box, rotten flesh, poisonous potato and spider eye are skipped.

• Change the list. The first time the game starts, the mod creates config/item-pickup-filter.json:

  { "blacklist": [ "minecraft:rotten_flesh", "minecraft:poisonous_potato", "minecraft:spider_eye" ] }

  Add or remove item ids (the same ids you type in /give, for example minecraft:gunpowder), save the file and restart the game. Ids of items added by other mods work too (checked on the Minecraft 26.3 build).

• Get an item back. Take it off the list and restart. The mod never deletes or changes items.

The result Your hotbar and inventory hold what you chose to keep. Skipped items lie on the ground and despawn after 5 minutes as usual.

Good to know

• The list matches the item id only, so every stack of that item is skipped.
• That includes items you drop yourself: you cannot pick a listed item back up until you remove it from the list.
• The mod does not change how long dropped items last: skipped items despawn after 5 minutes as usual.
• Edit mistakes will not crash the game. An id that cannot be read is skipped with a warning in the log. A missing file is recreated with the default list. A file that cannot be read is left untouched and the default list is used for that session.

Where to install it

• Singleplayer: install it like any other Fabric mod. It works right away.
• Dedicated server: install it on the server. The server decides who picks up what, so the one list applies to every player on it.

Requirements Fabric Loader. Available for Minecraft 1.21.11 and 26.3 (pick the file for your version). Fabric API is not needed.

Known limitations

• The list is read once, when the game starts. Edits need a restart.
• Tested in singleplayer: Creative on 1.21.11, Creative and Survival on 26.3. Not yet tested on a dedicated server, and not tested with a vanilla client joining a server that has the mod.
• Only the pickup you trigger by walking over an item is stopped. Other ways items can reach your inventory (for example another mod's item magnet) are not tested.
• One list for the whole server, not one per player.

Source: https://github.com/hullspark/fabric-mods

Disclosure: this mod was developed with AI assistance (Claude) and reviewed by the author. It does not reuse code or assets from other mods. It does not collect or transmit any data.