nta-corporate-number-lookuplisted
Install: claude install-skill Kokai-Data/japan-business-intelligence
## When to use
Use this skill when:
- The user provides a 13-digit Japanese 法人番号 (corporate number).
- You need authoritative status of the corporation: active / dissolved / merged / closed.
- You need **change history**: name changes, address moves, merger events.
- gBizINFO returned no record (small / new / non-METI-tracked entity) and you want NTA fallback.
- M&A due diligence, KYC verification, or pre-meeting research where past 沿革 matters.
## How to invoke
Call the kokai MCP server's `get_nta_corporate_record` tool:
```json
{
"name": "get_nta_corporate_record",
"arguments": {
"corporate_number": "<13-digit 法人番号>",
"include_history": true
}
}
```
## Output structure
The response includes:
- **latest**: the current authoritative record (name, address, kind, process status, assignment date)
- **history**: previous records (name changes / address moves / etc., sorted by date desc)
- **is_dissolved** / **is_merged**: boolean flags for closure status
- **process_summary**: human-readable summary like "3 件の異動履歴あり (商号変更 / 国内所在地の変更 ...)"
- **process_label**: 公式 process classification (01=新規 / 11=商号変更 / 12=移転 / 71=合併解散 / 81=抹消 / 99=削除)
- **source_authority**: "official" (公式 cite_required layer)
- **terms_of_use**: cite gBizINFO terms
## Differentiation from gBizINFO
| 領域 | gBizINFO (`get_entity_profile`) | NTA (this skill) |
|---|---|---|
| 法人番号 master | 派生 source | **authoritative** |
| 異動履歴 (社名変更 / 移転) | 大半未提示 | **公式 + 完全** |
| 解散 / 合併消滅 detection | △ 限定的