日本の公的データ（統計・法人・不動産）にAIからアクセスするMCPサーバー。e-Stat統計API・法人番号Web-API・不動産情報ライブラリAPIの3API統合。全国約1,700市区町村対応。
To add japan-data-mcp to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 3 environment variables, listed below.
Install
uvx japan-data-mcp@0.1.1Environment variables
ESTAT_APP_IDSet in your MCP configCORP_APP_IDSet in your MCP configREALESTATE_API_KEYSet in your MCP configInstall with your client
claude mcp add japan-data --env ESTAT_APP_ID=<YOUR_ESTAT_APP_ID> --env CORP_APP_ID=<YOUR_CORP_APP_ID> --env REALESTATE_API_KEY=<YOUR_REALESTATE_API_KEY> -- uvx japan-data-mcp@0.1.1
Run this in a terminal to add the server to Claude Code.
What this does
japan-data-mcp exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
ESTAT_APP_ID CORP_APP_ID REALESTATE_API_KEY
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install japan-data-mcp?
Run the Claude Code command in the install section to add japan-data-mcp to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with japan-data-mcp?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to japan-data-mcp as well.
Does japan-data-mcp need an API key?
Yes. Before it can run, set these environment variables: ESTAT_APP_ID, CORP_APP_ID, REALESTATE_API_KEY. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
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