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Kabuken

Japanese stocks MCP server for Claude, ChatGPT and Cursor

Kabuken is a Japanese stocks MCP server. It connects an AI assistant such as Claude, ChatGPT or Cursor to the official filings of Japanese listed companies, so you can ask in plain language and get answers that point back to the filing they came from.

Kabuken does not provide stock prices and does not give investment advice. It returns what companies report in their filings, nothing more.

What an assistant can answer

Section titled “What an assistant can answer”

When the assistant is connected, it can look up these kinds of information for a Japanese listed company.

  • Financial statements. Revenue, operating income, net income, assets, liabilities and cash flow, for the period and document you ask about.
  • Segments. Revenue and profit by business segment or by region, where the filing reports them.
  • Major shareholders. Who holds large stakes in a company, from the large shareholding reports.
  • Filing text. The business risks and the management discussion of an annual securities report (有価証券報告書), reproduced as filed.
  • Market events with sources. Maritime warnings published by the US National Geospatial-Intelligence Agency, shown with the company’s risk context. Other event sources are described in Market Events.
  • Major facilities. A summary of the facilities a company lists in the major facilities section of its latest annual report (主要な設備の状況): counts by country and by prefecture, with the source filing. The counts are listed facility rows, not size.
  • Comparisons. Two or more companies side by side on the same reported figures.

Every figure is returned with the filing and period it comes from, so you can check it against the source. Data comes from EDINET, the disclosure system of Japan’s Financial Services Agency. See About the Data for attribution.

Example questions

Section titled “Example questions”

You can write these in English or Japanese.

  1. “What was Toyota’s operating income in its latest annual report?”
  2. “Show Sony’s revenue by business segment and by region.”
  3. “Who are the major shareholders of Mitsubishi UFJ Financial Group?”
  4. “Compare Toyota and Honda on revenue, operating income and net income.”
  5. “Summarize the business risks section of Hitachi’s latest annual securities report.”
  6. “What is the risk context for Mitsui O.S.K. Lines, and are there recent maritime warnings?”
  7. “List the annual securities reports available for Nintendo.”
  8. “Which countries and prefectures does a company report its major facilities in?”

How the pieces fit together

Section titled “How the pieces fit together”

The assistant chooses the tools it needs from your question. It finds the company, picks the filing, then reads the figures or the text from that filing.

Question
  -> search_companies
  -> list_documents
  -> financial, segment,
     shareholder or text tool
  -> answer with the source filing

The Tools Reference lists every tool, its parameters and an example prompt.

How to connect

Section titled “How to connect”

The MCP endpoint is the same for every client:

https://kabuken.intellics.ai/mcp

What it does not do

Section titled “What it does not do”
  • It does not give stock prices, price charts or valuation multiples.
  • It does not recommend buying or selling any security.
  • It does not forecast. It reports what a filing says.
Section titled “Related pages”

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