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タブラ ラサ

ritomath

Japanese open-data tools: bulk validators and lookups built on official government sources (NTA, METI). No API keys, no scraping of protected pages.

ACTOR STATS

1 public Actor

2 total users

1 monthly user

>99% runs succeeded

Japanese official-data tools

I build small, single-purpose Actors on top of Japan's official open data: the National Tax Agency invoice registry, corporate number registry, gBizINFO and similar sources.

What you can expect from every Actor here:

  • Data comes from official bulk files or public APIs, used under the Japanese Public Data License / Government Standard Terms of Use, with attribution on every record.
  • Runs fail loudly instead of returning silent "not found" results when a source file is missing or changed.
  • English field names, JSON/CSV/Excel export, and a README in English with a short Japanese summary.

Current Actor:

  • Japan Invoice Registration (T-number) Checker — validate qualified invoice issuer numbers in bulk: registered, cancelled or expired, with name, address and dates.

Questions or requests for another Japanese data source: use the Issues tab on the Actor page.

日本の公的オープンデータ（国税庁インボイス登録、法人番号、gBizINFO など）を使った小さなツールを公開しています。出典表示付き、取得失敗時は「該当なし」を返さず実行を止める設計です。要望は各ActorのIssuesへどうぞ。

Public Actors