The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Kabuken listing page.
Kabuken is an MCP server that gives Claude and other MCP clients direct access to Japanese statutory filings on EDINET. It returns individual XBRL facts with bilingual (English/Japanese) taxonomy labels, calculation-linkbase trees, and segment breakdowns, all traceable to the filing they came from — not a flattened summary table.
Coverage, as of 2026-09-21: 99 of 99 currently-tracked TOPIX-100 constituents, 1,967 filings, fully extracted with zero missing facts on the current read path. Coverage beyond this set is broader but partial, and remediation is in progress. Kabuken has no stock prices or market data, and no history before FY2025 — earlier years appear only as comparatives inside 2025+ filings.
Signup is required. A free BASIC tier is available; see Tiers below.
This plugin declares a remote MCP server in .mcp.json
(https://kabuken.intellics.ai/mcp, streamable HTTP). Enable the plugin,
then see SETUP.md or ask Claude "set up Kabuken" to
authenticate.
16 read-only tools, grouped by purpose. None write or modify data.
Company and industry discovery
search_companies — search Japanese listed companies by name (EN or JA, partial match)get_company — full company record by any identifier (entity code, ticker, name)list_industries — TSE industry classification taxonomy (bilingual)Filings
list_documents — EDINET filing list for a company, with submission dates, period coverage, and XBRL/PDF availabilityFinancial facts
get_financial_facts — structured XBRL facts for a single filing, bilingual labelsget_calculation_tree — XBRL calculation linkbase as a tree (how totals decompose into components)get_segment_breakdown — segment/geography/consolidation-scope dimensional data, bilingual axis and member labelsget_company_financials — multi-period income statement, balance sheet, and cash flow, grouped by statement typeComparison and screening
compare_companies — side-by-side financial matrix for 2-5 companies from their latest annual securities reportscreen_companies — filter companies by financial ratio (ROE, ROA, operating margin, current ratio, debt-to-equity); no price-based screensget_industry_overview — mean/median/count per ratio for an industry, plus top/bottom 3 companiesOwnership and risk
get_major_shareholders — large-shareholding report (大量保有報告書) data: holder, percentage, shares, filing dateget_risk_context — BOJ policy-rate sensitivity and METI export-control classification for a companyAI-powered analysis
get_document_summary — AI-generated summary of a filinganalyze_document — free-text Q&A grounded in a specific filingAccount
get_account_quota — caller's current daily quota usage, limit, and reset time; available to all tiers and does not itself consume quota| Tier | Price | Daily call limit | Tool access |
|---|---|---|---|
| BASIC | Free | 50/day | 5 tools: search_companies, get_company, list_industries, get_risk_context, get_account_quota |
| INVESTOR | ¥1,980/month or ¥19,800/year | 500/day | All 16 tools |
| MCP DEVELOPER | ¥4,980/month | 1,000/day | All 16 tools |
Get an account and a kbk_ API key (or use OAuth) at
kabuken.intellics.ai. See
SETUP.md for the connection walkthrough.
/kabuken:company-snapshot <company> — revenue, income, assets, equity, and risk context for one company/kabuken:peer-comparison <company, company, ...> — side-by-side financials for 2-5 companies/kabuken:segment-breakdown <company> — business/geographic segment breakdown for a filingEDINET content (filings, facts, dimensions) is used under Japan's Public Data License 1.0 (PDL 1.0):
Source: EDINET (https://disclosure2.edinet-fsa.go.jp/), PDL 1.0 (https://www.digital.go.jp/resources/open_data/public_data_license_v1.0). Data is processed by Kabuken, not raw unprocessed FSA data.
The EDINET Taxonomy (concept labels, calculation-linkbase relationships,
dimension axis/member labels) is excluded from PDL 1.0 and separately
licensed under the FSA EDINET Taxonomy Legal Statement
(https://www.fsa.go.jp/search/EDINET_Taxonomy_Legal_Statement.html), which
requires the notice "© Copyright 2014 Financial Services Agency, The
Japanese Government" on redistribution. Tools that surface taxonomy content
(get_calculation_tree, get_segment_breakdown) carry this notice.
Figures returned by screen_companies, get_industry_overview,
compare_companies, and get_company_financials are calculated by Kabuken
from EDINET filings, not reported directly by EDINET. Output from
analyze_document is AI-generated and may contain errors; it is not
investment advice.
https://kabuken.intellics.ai/privacy
https://kabuken.intellics.ai/docs
server.json describes the hosted Kabuken MCP server (https://kabuken.intellics.ai/mcp)
in the official MCP registry format and is
published from this repo under the io.github.intellics-ai/kabuken namespace. The server's
own source runs in a separate, private repository; this public repo is the registry's
companion listing and the home for the plugin package documented above. Publishing runs via
.github/workflows/publish-registry.yml (manual workflow_dispatch, GitHub OIDC
authentication, no stored secrets).