MCP For Claude Marketplace
NDL Japan Library Search

NDL Japan Library Search MCP Connector for Claude

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Japan's National Diet Library as an MCP: search 100M+ records — books, journals, dissertations, digitized Meiji/Edo classics — by title, author, publisher or ISBN, with NDL viewer links. Keyless.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner
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The National Diet Library (NDL) — Japan's national library and one of the largest collections on Earth — as a single MCP server.

What you can do

  • Search 100M+ records — every book, journal article, dissertation, map and government document catalogued in Japan, matched by title, author, publisher or any field
  • ISBN lookup — authoritative Japanese bibliographic data for any book: exact kanji title, author, publisher, dates, volumes/pages, subjects
  • Digitized treasures — the NDL Digital Collections hold free scans of Meiji and Edo era books, ukiyo-e, historical documents and pre-war journals

What lives here

The memory of Japan: 400 years of printing, every PhD thesis since Japan had universities, the complete congressional library of the Diet, and a digitization program that made centuries of rare Japanese books free to read online.

Who is this for?

Researchers, translators, historians, bibliographers, librarians, book collectors and AI agents that need authoritative Japanese bibliographic data or want to locate digitized Japanese primary sources.

japanlibrarybibliographic-dataisbn-lookupdigitized-booksresearch

3 tools expose this connector's capabilities to your AI agent.

find_book_by_isbn

The fastest way to get authoritative Japanese bibliographic data for a book. NOTE: the NDL API requires the hyphenated ISBN form — this tool inserts the hyphens automatically. Look up one book in the NDL catalog by ISBN-13 or ISBN-10

search_national_library

Query modes: title= (book/article titles), any= (all fields), creator= (author), publisher=. Japanese terms work best; English also matches many records. Returns title, author, publisher, date, ISBN, subjects, categories and NDL page URL. NOTE: the API has no server-side pagination — set cnt to the window you need (max ~200). Search the National Diet Library of Japan: 100M+ books, journals, dissertations, digitized classics and government documents

search_digitized_history

Ideal for 明治/江戸 era books, historical documents, old maps and journals that are digitized and free to read. Returns digitized item metadata with NDL viewer links. Search NDL Digitized Collections: scanned Japanese classics, Meiji-era books, rare documents (all free)

See how to talk to your AI agent using NDL Japan Library Search.

Find books about ramen in Japan's national library

📚 **NDL search: ラーメン (title)** 10,983 records. Top hits: - 嗚呼!このラーメンがうまい : 首都圏版 — guide to the Kanto's best bowls - 嗚呼!このラーメンがうまい : 関西版 — Kansai edition From 1970s food culture to modern academic studies of ramen globalization. Want a filtered look at the academic titles?

Look up ISBN 978-4-12-390001-1 in the NDL catalog

📖 **ISBN lookup via NDL** Title: 数え方の辞典 (Dictionary of Counting Words) Author: 飯田朝子 · Publisher: 朝日新聞出版 Japanese counters (本/枚/匹...) are famously hard — this is the standard reference. I can pull related counter-dictionary titles too.

Are there digitized Meiji-era books about the railway?

🎴 **NDL Digitized Collections: 明治 鉄道** Yes! Free scans include: - Meiji railway construction reports (official documents) - Early travel guides with train timetables from 1889 - Illustrated books on the Tokaido line All readable in the NDL viewer. I can search a specific year or region next.

No. The NDL Search OpenSearch API is fully public — all tools work without authentication.

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