JP Open Data

Unofficial client for the Tokyo Metropolitan Government Open Data Catalog (CKAN API v3, no key). Search datasets by keyword/publisher/category, or download a dataset's CSV records as structured JSON (Shift_JIS aware). CC BY 4.0.

Monthly Japanese import/export statistics by HS commodity code and partner country, straight from the official Japan Customs (Ministry of Finance) trade statistics database. English field schema and country names, values in JPY, quantities with units, year-to-date cumulatives, source attribution…

Used & new media prices from BOOKOFF online (shopping.bookoff.co.jp): price JPY, list price, condition, stock, release date, author/artist, optional JAN for books, comics, CD, DVD, games. English schema for price research. Item facts only. Unofficial; not affiliated with BOOKOFF.

Japanese used commercial-vehicle listings from 55truck.com (トラック王国) — price, year, mileage, load capacity, body type, size, transmission and inspection by maker/body-type/size, English schema. Unofficial; not affiliated with 55truck / トラック王国.

Unofficial tool reading Japan Meteorological Agency (JMA) open JSON data: 3-day + weekly forecasts, warnings/advisories, and regional outlooks per prefecture, with weather and warning codes resolved to English. Public open data, no API key. Not affiliated with JMA.

Ikyu scraper for Japan luxury hotel prices: high-end hotels & ryokan with ratings and advertised prices from ikyu.com by prefecture and area — clean English schema for rate shopping. Unofficial; not affiliated with Ikyu Corporation / LY Corporation.

Yahoo Auctions Japan scraper for sold prices (落札相場): closed-auction search with title, sold price JPY, bid count, end time, condition and category — English schema for resale comps and price research. Item facts only, no seller data. Unofficial; not affiliated with LY Corporation.

Carsensor scraper for Japan used car data: listings from carsensor.net with price, year, mileage, repair history, inspection and dealer info by maker/prefecture — English schema for JDM export sourcing. Unofficial; not affiliated with Recruit Co., Ltd.

Look up Japan's registered corporations via the official National Tax Agency 法人番号 Web-API: by corporate number, by name, or by change period. Returns number, name, address, postcode, type and registry dates (English-keyed). Bring your own free NTA application ID. No personal data. Unofficial.

List Japan's securities-disclosure filings (yuho, quarterly, large-shareholding, etc.) via the official EDINET API v2: by date or date range, filterable by company or document type. Bibliographic metadata only, corporations/funds only. Bring your own EDINET API key. Unofficial.

Search and download Japan's official government statistics via the official e-Stat API v3.0: find statistical tables, then pull their values with every dimension resolved to English names. You supply your own e-Stat application ID. Unofficial; not affiliated with the Statistics Bureau of Japan.

Search Japan's 4.5M+ corporations via the official gBizINFO REST API: by name/prefecture/industry, or by 13-digit corporate number. Returns number, name, address, capital, employees, founding date and more (English-keyed). Bring your own free token. Personal names excluded. Unofficial.

Hobby/collectibles prices from Suruga-ya (suruga-ya.jp): new & used prices JPY, stock status, marketplace low price, release date, maker — figures, games, trading cards, anime goods, books. English schema for price research. Item facts only. Unofficial; not affiliated with A-Too Inc.

Search Rakuten Ichiba products and Rakuten Travel hotels via the official Rakuten Web Service APIs (JSON). You supply your own Rakuten application ID / access key. Unofficial; not affiliated with Rakuten Group.

Structured Japanese government procurement notices (national / prefectural / municipal) from the official kkj.go.jp search API. English field schema, source attribution embedded in every record.

Search Yahoo! Shopping (Japan) products via the official item-search API v3: price, store, brand, JAN, points, review score, stock. You supply your own Yahoo application ID. Unofficial; not affiliated with LY Corporation / Yahoo! JAPAN.