Japan Data MCP Server

by izyuusya Your server? Claim it

local only

Japan Data MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 151 installs a week from pypi. Last commit 5 Mar 2026.

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。

Installs per day peak 42 · avg 19 · +44% w/w

a month agotoday

151

Installs / week

pypi · japan-data-mcp

Stars

0 open issues

5 Mar 2026

Last commit

from GitHub

MIT

License

Python

Nothing serious here today

Today is the operative word: we check Japan Data MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add japan-data-mcp -e 'ESTAT_APP_ID=<ESTAT_APP_ID>' -- uvx japan-data-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "japan-data-mcp": {
      "command": "uvx",
      "args": [
        "japan-data-mcp"
      ],
      "env": {
        "ESTAT_APP_ID": "<ESTAT_APP_ID>"
      }
    }
  }
}

~/.codex/config.toml

[mcp_servers.japan-data-mcp]
command = "uvx"
args = ["japan-data-mcp"]
env = { ESTAT_APP_ID = "<ESTAT_APP_ID>" }

.cursor/mcp.json

{
  "mcpServers": {
    "japan-data-mcp": {
      "command": "uvx",
      "args": [
        "japan-data-mcp"
      ],
      "env": {
        "ESTAT_APP_ID": "<ESTAT_APP_ID>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "japan-data-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "japan-data-mcp"
      ],
      "env": {
        "ESTAT_APP_ID": "<ESTAT_APP_ID>"
      }
    }
  }
}

Put your own value in place of <ESTAT_APP_ID> (e-Stat API Application ID (required). Free at https://www.e-stat.go.jp/api/api-info/api-guide). The author’s registry entry marks it as required.

Optional settings from the registry entry, left out of the block above: CORP_APP_ID (Corporate Number Web-API Application ID (optional). Apply at https://www.houjin-bangou.nta.go.jp/webapi/), REALESTATE_API_KEY (Real Estate Information Library API Key (optional). Apply at https://www.reinfolib.mlit.go.jp/api/request/).

Japan Data MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Japan Data MCP?

Japan Data MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package japan-data-mcp was installed 151 times last week.

How do I connect Japan Data MCP?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls japan-data-mcp straight from pypi; nothing to host, nothing to sign up for.

How many people use Japan Data MCP?

The pypi package japan-data-mcp was installed 151 times in the last week. Week over week that is +44%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Japan Data MCP open source?

Yes — it is published under the MIT licence, written in Python and 12 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.