--- title: "Courts of Japan Rulings Search" method: POST path: "/jp/courts-jp/rulings-search/v1" tags: ["Japan", "Courts of Japan"] --- # Courts of Japan Rulings Search `POST /jp/courts-jp/rulings-search/v1` ## Request - Base URL: `https://api.croma.run` - URL: `https://api.croma.run/jp/courts-jp/rulings-search/v1` - Auth: HTTP bearer Search the case law the courts of Japan publish: about 68,000 rulings of the Supreme Court, the high courts and the lower courts since 1947, across the administrative, labour and intellectual property collections too. Free text in Japanese matches the case name, the court's summary, the statutes cited and the full text. Filter by `collection`, `court` (matched from the start of its name), `case_number`, `year` and the ruling date (`from_date`/`to_date`). Each result carries the court's document, kept by Croma, and a link to the ruling's page at the courts. Served by Croma (`as_of` says how current the data is). **Dataset endpoint**: answers from the whole source in milliseconds and carries `as_of`. ## Headers - `Idempotency-Key` string ## Request body - object - `query` string: Optional words, in Japanese, matched against the case name, the court's summary (判示事項, 裁判要旨), the statutes cited and the text of the ruling: `解雇権濫用`, `過払金 返還`. Two or more characters; every word must appear. - `collection` '' | 'supreme' | 'high' | 'lower' | 'administrative' | 'labor' | 'ip' | 'ip_high': Optional collection: `supreme` (最高裁判所判例集), `high` (高等裁判所判例集), `lower` (下級裁判所裁判例速報), `administrative` (行政事件裁判例集), `labor` (労働事件裁判例集), `ip` (知的財産裁判例集) or `ip_high` (知的財産高等裁判所). A ruling can sit in more than one. - `court` string: Optional court as `court` names it, e.g. `最高裁判所第一小法廷`, `東京高等裁判所`, `大阪地方裁判所`, matched from the start, so `最高裁判所` finds every bench of the Supreme Court. - `case_number` string: Optional case number as the court prints it, e.g. `平成21(オ)257` or `令和7(あ)868`. Spaces and the width of the characters are ignored. - `year` integer: Optional year the ruling was handed down (Gregorian). 0 searches every year. - `from_date` string, date: Optional date filter in yyyy-mm-dd format. - `to_date` string, date: Optional date filter in yyyy-mm-dd format. - `page` integer: 1-based page number for paginated results. - `per_page` integer: Results per page (1-50). ## Response `200` Successful response - CourtsJpRulingsSearchResponse - `data` CourtsJpRulingsSearchData, required - `as_of` string, nullable, required: How current the data in this response is. - `query` string, required - `collection` string, nullable, required - `court` string, nullable, required - `case_number` string, nullable, required - `year` number, nullable, required - `from_date` string, nullable, required - `to_date` string, nullable, required - `total` number, required: Matches, counted up to 1000. - `total_is_exact` boolean, required: False when more than 1000 match: `total` is then 1000, and the pages go on. - `page` number, required - `per_page` number, required - `total_pages` number, required: Pages over `total`; there are more when `total_is_exact` is false. - `count` number, required - `results` object[], required - `id` string, required: The ruling's permanent number at the courts' site, e.g. "93117". Unique across every collection. - `collections` string[], required: The collections the courts publish the ruling in: `supreme` (最高裁判所判例集), `high` (高等裁判所判例集), `lower` (下級裁判所裁判例速報), `administrative` (行政事件裁判例集), `labor` (労働事件裁判例集), `ip` (知的財産裁判例集), `ip_high` (知的財産高等裁判所). One ruling can sit in several. - `case_number` string, nullable, required: The case number as the court prints it, e.g. "平成21(オ)257", "令和7(あ)868". - `case_year` number, nullable, required: The Gregorian year the case was filed, from its number. - `title` string, nullable, required: The case name (事件名), e.g. "損害賠償請求事件". Null when the court published none. - `ruling_date` string, required: `yyyy-mm-dd` the ruling was handed down. - `ruling_date_japanese` string, nullable, required: The same date in the Japanese calendar, e.g. "平成22年6月17日". - `year` number, required: The year of the ruling. - `court` string, nullable, required: The court, and for the Supreme Court its bench, e.g. "最高裁判所第一小法廷", "東京高等裁判所", "大阪地方裁判所". - `branch` string, nullable, required: The branch of the court (支部), when the ruling names one. - `department` string, nullable, required: The division of the court (部), when the ruling names one. - `judgment_type` string, nullable, required: The kind of decision, e.g. "判決" (judgment), "決定" (decision). - `result` string, nullable, required: The outcome as the court records it, e.g. "棄却", "破棄差戻", "却下", "その他". - `reporter` string, nullable, required: The official reports citation (判例集等巻・号・頁), when the ruling is reported. - `lower_court` string, nullable, required: The court whose decision was appealed (原審), when there is one. - `lower_case_number` string, nullable, required: The case number at the lower court. - `lower_ruling_date` string, nullable, required: `yyyy-mm-dd` of the lower court's decision. - `lower_result` string, nullable, required: The lower court's outcome, when the courts state it. - `holding` string, nullable, required: The court's statement of what was decided (判示事項), when published. - `gist` string, nullable, required: The court's summary of the reasoning (裁判要旨 or 要旨), when published. - `statutes` string, nullable, required: The provisions the ruling turns on (参照法条), as the court lists them. - `field` string, nullable, required: The field the courts file an administrative or labour case under (分野), when stated. - `right_type` string, nullable, required: For an intellectual property case, the right at issue (権利種別), e.g. "特許権", "著作権", "商標権". - `suit_type` string, nullable, required: For an intellectual property case, the kind of suit (訴訟類型), e.g. "民事訴訟", "審決取消". - `ip_case_kind` string, nullable, required: For an IP High Court case, the kind of case (事件種別). - `invention` string, nullable, required: For an IP High Court case, the title of the invention, mark or work (発明等の名称等). - `issues` string, nullable, required: For an IP High Court case, the main issues (主な争点). - `appeal` string, nullable, required: For an IP High Court case, whether a further appeal was lodged (上告提起等の有無). - `appeal_result` string, nullable, required: For an IP High Court case, the result of that appeal (上告審の結果). - `ip_result` string, nullable, required: For an IP High Court case, the outcome as that court records it (判決結果). - `text_status` 'ok' | 'scanned' | 'missing', required: `ok` when the full text is here; `scanned` when the court's document carries no text layer; `missing` when the court published no document. - `official_url` string, required: The ruling's page at the courts' site. - `document_url` string, nullable, required: Croma's copy of the court's document (PDF), byte for byte as published. It stays available whatever happens to the court's own site. Null when the court published none. - `source_document_url` string, nullable, required: The document's own link at the courts' site. ## Other responses - `400`: Invalid request body - `401`: Missing or invalid API key - `429`: Rate limit exceeded - `500`: Internal error - `502`: Upstream source returned an error --- [API](https://skmtc.dev/usecroma/apis/croma-marketplace-api.md) · [All operations](https://skmtc.dev/usecroma/apis/croma-marketplace-api/llms.txt) · [OpenAPI document](https://skmtc.dev/usecroma/apis/croma-marketplace-api/revisions/df016cdb29d7?raw)