---
language:
  - ja
  - en
license: cc-by-4.0
task_categories:
  - text-generation
tags:
  - minecraft
  - commands
  - instruction-tuning
  - function-calling
  - japanese
pretty_name: Minecraft NL→Command (ja/en)
size_categories:
  - 10K<n<100K
configs:
  - config_name: default
    data_files:
      - split: train
        path: train.jsonl
      - split: test
        path: test.jsonl
---

# Minecraft NL→Command Dataset (Japanese / English)

自然言語の指示(日本語・英語)を Minecraft Java Edition **1.21.5** のコマンドに変換するためのデータセットです。
A dataset of natural-language instructions (Japanese / English) paired with Minecraft Java Edition **1.21.5** commands.

```json
{"instruction": "自分の持っているアイテムにウィンドバーストIを付与して",
 "output": "/enchant @s minecraft:wind_burst 1",
 "lang": "ja", "command": "enchant", "mc_version": "1.21.5"}
```

## Contents

- **~51k pairs** (train ≈ 48.5k / test ≈ 2.5k), roughly half Japanese, half English
- **12 commands**: `give` (plain / count / enchanted with 1.21+ item components), `effect give`
  (simple / timed+amplifier / infinite), `summon`, `enchant`, `tp`, `time set`, `weather`,
  `gamemode`, `setblock`, `fill`, `clear`, `xp`
- Item / block / entity / effect / enchantment names use **Mojang's official ja_jp / en_us translations**,
  so surface forms match what players actually see in-game
- Enchanted `give` uses the modern **item component syntax**
  (`[minecraft:enchantments={"minecraft:sharpness":5}]`, 1.21.2+ format) with only
  category-compatible enchantments and vanilla-legal levels
- Ambiguous display names (e.g. every music disc is just "Music Disc") are **excluded** so each
  instruction maps to exactly one command

## Fields

| field | description |
|---|---|
| `instruction` | natural-language request (ja or en) |
| `output` | the corresponding slash command |
| `lang` | `ja` / `en` |
| `command` | base command name (e.g. `give`) |
| `mc_version` | targeted Minecraft version (`1.21.5`) |

## How it was built

Fully deterministic template-based generation (no LLM involved):
official Mojang registry data + official translation files + hand-written sentence templates
(seeded RNG, deduplicated, 95/5 split). Generation code: see the `generate.py` in the source repository.

## Quality assurance

Every release passes a three-layer validation pipeline:

1. **Syntax layer (100% of records)** — each command is matched against a strict per-command grammar,
   every ID is checked against the official 1.21.5 registries, and numeric arguments are range-checked
   (vanilla enchantment level caps, `/fill` volume limit, tick range, etc.).
2. **Round-trip layer (100% of records)** — slots are re-extracted from the command and matched back
   against the instruction: item/entity/effect names, counts, durations, coordinates, Roman-numeral
   levels, and selector↔phrase correspondence (`@a` ⇔ "everyone"/「全員」).
3. **LLM-judge layer (stratified)** — a local LLM judges semantic faithfulness and native-speaker
   naturalness on samples stratified per (language × template), so every template that produced records
   is audited. Templates flagged across four review rounds were rewritten and the dataset regenerated.

Final result for this release: layers 1–2 pass 51,089/51,089; layer 3 certifies 114/115 template
groups. The single remaining flag is a verified judge false positive (`/summon minecraft:tnt` does
spawn primed TNT, matching the official Japanese name 「着火されたTNT」).

## Limitations

- Sentence variety is template-bound (a few phrasings per command type); not a substitute for
  human-written requests.
- Commands are validated against the 1.21.5 grammar and registries but were not executed in-game.
- `enchant` pairs assume the held item is compatible; the command itself is well-formed regardless.

## License / attribution

The dataset structure and sentence templates are released under **CC-BY-4.0**.
Minecraft item/block/entity names and translations are the property of **Mojang Studios / Microsoft**.
This is unofficial fan content, not approved by or associated with Mojang or Microsoft
(per the [Minecraft Usage Guidelines](https://www.minecraft.net/en-us/usage-guidelines)).