Documentation

How to use ModCrafter

From idea to playable datapack in three steps. Works with Minecraft Java Edition 1.21.11.

1
Describe what you want
Open the chat and describe the gameplay change in plain English. Be specific about which mobs, items, or rules you want to change. For example:
prompt.txt
```
1All piglins should have full netherite armor
```
2
Download the zip
ModCrafter writes every file — functions, tags, and pack.mcmeta — and shows a datapack card in the chat. Click Download .zip to save it. You can also ask follow-up questions or request tweaks; each revision gets a fresh download.
3
Install it in your world
Singleplayer
In Minecraft, select your world → Edit → Open World Folder → open the datapacks folder and drop the zip in. Type /reload if the world is running.
New world
On the world creation screen, click Data Packs → Open Pack Folder, drop the zip in, then move it to the Selected side.
Server
Put the zip in world/datapacks/ and run /reload (requires op).

Tips for better packs

One idea per request works best. Chain follow-ups for complex packs.

Mention edge cases you care about — e.g. “only in the Nether” or “only newly spawned mobs”.

Datapacks can change game logic (drops, rules, functions, recipes) but not add new textures, models, or blocks — that needs a resource pack or a mod.

If a pack doesn't seem to work, run /datapack list in-game to check it loaded, and paste any error back into the chat — ModCrafter will fix it.