Japan Data MCP

日本の地域分析・比較に特化した MCP（Model Context Protocol）サーバーです。 e-Stat（政府統計の総合窓口）、国税庁法人番号公表サイト、国土交通省不動産情報ライブラリ、適格請求書発行事業者公表サイトの API を通じて日本の公的データにアクセスし、人間が読みやすい形式に自動変換して返します。. It runs locally over stdio via the published package.

People who work with corporate number, e stat and invoice and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-03-05 · ★ 10 · #188 OF 318 MAINTAINED FINANCE · VERIFIED 2026-09-18

MIT · Python servers · how we verify → /methodology

01 · Install Japan Data MCP

before you install - you'll need

Set ESTAT_APP_ID, CORP_APP_ID, REALESTATE_API_KEY before connecting.

Claude Code

claude mcp add izyuusya-japan-data-mcp -- uvx japan-data-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "izyuusya-japan-data-mcp": {
      "command": "uvx",
      "args": [
        "japan-data-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

pypi package japan-data-mcp - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.Izyuusya is GitHub-verified and matches the repo owner

03 · What Japan Data MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.2.0 · 2026-03-03

新機能 · インボイス（適格請求書発行事業者公表 Web-API）対応 · search_invoice_by_name - 会社名からインボイス登録番号を検索（法人番号API → インボイスAPIを自動チェーン） · check_invoice_registration - 登録番号（T+13桁）でインボイス登録状況を確認 · validate_invoice_on_date - 指定日時点でのインボイス登録有効性を確認…

v0.1.1 · 2026-02-26

japan-data-mcp v0.1.1 · 変更点 · MCP Registry / Smithery マーケットプレイス登録対応 · smithery.yaml 追加

v0.1.0 · 2026-02-26

japan-data-mcp v0.1.0 · 日本の地域分析・比較に特化した MCP サーバーの初回リリース。 · 機能 · e-Stat API 連携 - 統計データ検索・取得・コード自動変換 · 法人番号 Web-API 連携 - 法人名検索・法人番号照会 · 不動産情報ライブラリ API 連携 - 不動産取引価格情報取得 · プリセット分析 - get_population / get_regional_profile…

04 · Who maintains Japan Data MCP

japan-data-mcp is maintained by izyuusya. It's the only MCP server we track from this author; the repo dates to Feb 2026.

05 · Facts

repository: github.com/izyuusya/japan-data-mcp
category: finance - ranked #188 of 318 actively-maintained finance servers as of 2026-09-18.
registry: io.github.Izyuusya/japan-data-mcp (active, first published 2026-02-26)
packages: pypi:japan-data-mcp

06 · Japan Data MCP FAQ

What is Japan Data MCP?

Is Japan Data MCP still maintained?

Yes - as of 2026-09-18, its last commit was 2026-03-05. We re-verify nightly.

How do I install Japan Data MCP?

Run `uvx japan-data-mcp`. The README documents 3 environment variables (ESTAT_APP_ID, CORP_APP_ID, REALESTATE_API_KEY) to set first. Set ESTAT_APP_ID, CORP_APP_ID, REALESTATE_API_KEY before connecting. You can also paste the ready-made client config above.

Does Japan Data MCP run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Japan Data MCP

Alternatives to Japan Data MCP

Maintained finance servers if Japan Data MCP isn't the fit.

Pairs well with

Servers that cover what Japan Data MCP doesn't - only shown when the pairing reason fits the companion.

More finance MCP servers · Fortnox · Monarch MCP Server · Wudao A-Share Stock Data MCP · Arbitova · Pacioli - the ERPNext broker you can hand the books

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