Japan public data: corporate numbers, registered support organizations, government bid notices.
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Look up Japanese companies in the National Tax Agency Corporate Number Publication Site. Search by 13-digit corporate number, or by company name. Returns name, address and status. 国税庁 法人番号公表サイトから、法人番号（13桁）または法人名で法人情報（名称・所在地・閉鎖有無）を検索します。
| Name | Required | Description | Default |
|---|---|---|---|
| name | No | Company name, partial match, closed companies excluded / 法人名（部分一致・閉鎖法人は対象外）。number とは同時指定不可 | |
| number | No | 13-digit corporate number / 法人番号（13桁） |
Search bid and tender notices from Japanese local governments and national agencies via the KKJ (官公需情報ポータルサイト) search API by the Small and Medium Enterprise Agency. Filter by keywords (AND), prefecture, issuing organization and notice date. Returns title, organization, dates and the notice URL. 官公需情報ポータルサイトの検索APIで、自治体・国の機関の入札・公募情報をキーワード・都道府県・機関名・公告日で検索します。
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | Max results (default 10, max 20) / 最大件数 | |
| query | No | Keywords separated by spaces (AND) / キーワード（空白区切りでAND） | |
| since | No | Notices issued on or after this date, YYYY-MM-DD (default: 30 days ago) / 公告日がこの日以降（既定：30日前） | |
| prefecture | No | Prefecture name / 都道府県（例：東京都、大阪） | |
| organization | No | Issuing organization, partial match / 機関名（部分一致。例：横浜市） |
Search the Immigration Services Agency of Japan registry of Registered Support Organizations for Specified Skilled Workers. Filter by name, location (prefecture/city in head office or support office address) and supported language. Organizations that reported suspension are excluded unless includeSuspended is true. 出入国在留管理庁「登録支援機関登録簿」から、特定技能外国人の登録支援機関を名称・所在地・対応言語で検索します（同梱データ・基準日あり）。
| Name | Required | Description | Default |
|---|---|---|---|
| name | No | Organization name, partial match / 名称（部分一致） | |
| limit | No | Max results (default 10, max 20) / 最大件数 | |
| language | No | Supported language in Japanese / 対応言語（例：ベトナム語、英語） | |
| location | No | Prefecture or city, partial match on address / 所在地（例：東京都、横浜市。住所の部分一致） | |
| includeSuspended | No | Include organizations that reported suspension / 支援業務休止の届出がある機関も含める |
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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