Japan Corporate

MCP Server for Japanese corporate data — search companies, financials, patents, subsidies, and government statistics via official government APIs.

日本企業データMCPサーバー — gBizINFO・EDINET・e-Statの政府APIから企業情報をAIが直接取得できます。

Features / 機能

Tool	Description	データソース
search_company	Search companies by name	gBizINFO
get_company_info	Company details (address, capital, employees)	gBizINFO
get_company_finance	Financial data (revenue, profit, assets)	gBizINFO
get_company_patents	Patent information	gBizINFO
get_company_subsidies	Subsidies and grants received	gBizINFO
get_company_procurement	Government procurement records	gBizINFO
get_edinet_reports	Securities reports (有価証券報告書)	EDINET
get_statistics	Government statistics search	e-Stat

Installation / インストール

pip install japan-corporate-mcp

API Key Setup / APIキーの取得

You need API keys from the following government services:

API	Registration	URL
gBizINFO (経産省)	Web registration, instant	https://info.gbiz.go.jp/hojin/api_registration
EDINET (金融庁)	Web registration + MFA	https://disclosure2dl.edinet-fsa.go.jp/guide/static/disclosure/WZEK0110.html
e-Stat (総務省)	Web registration, instant	https://www.e-stat.go.jp/api/

Configuration / 設定

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "japan-corporate": {
      "command": "japan-corporate-mcp",
      "env": {
        "GBIZINFO_API_TOKEN": "your-gbizinfo-token",
        "EDINET_SUBSCRIPTION_KEY": "your-edinet-key",
        "ESTAT_APP_ID": "your-estat-app-id"
      }
    }
  }
}

Claude Code

claude mcp add japan-corporate -- japan-corporate-mcp \
  -e GBIZINFO_API_TOKEN=your-token \
  -e EDINET_SUBSCRIPTION_KEY=your-key \
  -e ESTAT_APP_ID=your-app-id

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "japan-corporate": {
      "command": "japan-corporate-mcp",
      "env": {
        "GBIZINFO_API_TOKEN": "your-gbizinfo-token",
        "EDINET_SUBSCRIPTION_KEY": "your-edinet-key",
        "ESTAT_APP_ID": "your-estat-app-id"
      }
    }
  }
}

Usage Examples / 使用例

Once configured, you can ask your AI assistant:

• "ソニーグループの企業情報を教えて" (Get Sony Group's company info)
• "トヨタ自動車の特許情報を検索して" (Search Toyota's patents)
• "東京都のAI関連企業を探して" (Find AI companies in Tokyo)
• "日本の製造業に関する統計データを検索" (Search manufacturing statistics)
• "最近のEDINET報告書でソフトバンクを検索" (Search SoftBank's EDINET filings)

Environment Variables / 環境変数

Variable	Required	Description
GBIZINFO_API_TOKEN	Yes*	gBizINFO API token
EDINET_SUBSCRIPTION_KEY	For EDINET tools	EDINET subscription key
ESTAT_APP_ID	For e-Stat tools	e-Stat application ID

* At minimum, GBIZINFO_API_TOKEN is needed for company search/info tools.

Development / 開発

git clone https://github.com/drago/japan-corporate-mcp.git
cd japan-corporate-mcp
pip install -e ".[dev]"
pytest

License

MIT