Search Japanese corporate registry by name via the National Tax Agency (国税庁) Web-API. Returns corporations with 13-digit corporate numbers. Use when gBizINFO does not have the company or for cross-validation. 日本語 keyword: 国税庁 法人名検索 / 法人番号取得 by 名前 / NTA 法人検索 / 名前から法人番号.
How this skill is triggered — by the user, by Claude, or both
Slash command
/procurement-discovery-jp:nta-corporate-name-searchThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
Use this skill when:
Use this skill when:
search_company returned no results, or you want to cross-validate.Call the kokai MCP server's search_nta_corporate_name tool:
{
"name": "search_nta_corporate_name",
"arguments": {
"name": "<company name, 2+ chars>",
"prefecture": "<optional prefecture code, e.g., '13' for 東京都>",
"kind": "<optional 法人区分, e.g., '301' for 株式会社>"
}
}
| Code | Label |
|---|---|
| 101 | 国の機関 |
| 201 | 地方公共団体 |
| 301 | 株式会社 |
| 302 | 有限会社 |
| 303 | 合名会社 |
| 304 | 合資会社 |
| 305 | 合同会社 |
| 399 | その他の設立登記法人 |
| 401 | 国外所在の法人 等 |
| 499 | 人格のない社団等 |
For each result, present:
After identifying the target company, call nta-corporate-number-lookup skill with the 法人番号 to get full record + change history.
search_company returns business intelligence (industry / scale)search_nta_corporate_name returns authoritative master data (name / address / 法人区分)close=0 flag).nta-corporate-number-lookup with the 法人番号 directly.npx claudepluginhub kokai-data/japan-business-data --plugin procurement-discovery-jpCreates, edits, and optimizes skills for Claude Code, including drafting, evaluating with test prompts, iterating on performance, and improving skill descriptions for better triggering accuracy.