nta-corporate-name-search

When to use

Use this skill when:

• The user provides a Japanese company name (2+ characters).
• gBizINFO's search_company returned no results, or you want to cross-validate.
• You want to find corporations not registered in gBizINFO (small / newly-formed / non-METI-tracked entities).
• You need the 国税庁公式 corporate-number master view (definitive 法人番号 SoT).

How to invoke

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>"
  }
}

法人区分 (kind) codes

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

Output structure

For each result, present:

• 13-digit 法人番号
• name (商号又は名称)
• furigana (フリガナ)
• en_name (英語名称、登録ある場合のみ)
• location (都道府県 + 市区町村 + 丁目番地)
• post_code
• kind_label (法人区分 ラベル)
• process_label (現在 process status)
• assignment_date (法人番号指定年月日)
• is_latest (最新フラグ)

After identifying the target company, call the get_nta_corporate_record tool with the 法人番号 to get full record + change history.

Differentiation from gBizINFO

• gBizINFO search_company returns business intelligence (industry / scale)
• NTA search_nta_corporate_name returns authoritative master data (name / address / 法人区分)
• For cross-validation: call both and compare. Disagreement signals data freshness or scope issues.

Boundary

• Output is signal / 確認材料 / context — NOT a decision.
• Active corporations only by default (closed entities excluded via close=0 flag).
• For dissolved / merged corporation detection, use get_nta_corporate_record with the 法人番号 directly.