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。
Connect Runs on your machine
claude mcp add japan-data-mcp -e ESTAT_APP_ID=<ESTAT_APP_ID> -e CORP_APP_ID=<CORP_APP_ID> -e REALESTATE_API_KEY=<REALESTATE_API_KEY> -- uvx japan-data-mcp==0.1.1{
"mcpServers": {
"japan-data-mcp": {
"command": "uvx",
"args": [
"japan-data-mcp==0.1.1"
],
"env": {
"ESTAT_APP_ID": "<ESTAT_APP_ID>",
"CORP_APP_ID": "<CORP_APP_ID>",
"REALESTATE_API_KEY": "<REALESTATE_API_KEY>"
}
}
}
}{
"mcpServers": {
"japan-data-mcp": {
"command": "uvx",
"args": [
"japan-data-mcp==0.1.1"
],
"env": {
"ESTAT_APP_ID": "<ESTAT_APP_ID>",
"CORP_APP_ID": "<CORP_APP_ID>",
"REALESTATE_API_KEY": "<REALESTATE_API_KEY>"
}
}
}
}{
"servers": {
"japan-data-mcp": {
"type": "stdio",
"command": "uvx",
"args": [
"japan-data-mcp==0.1.1"
],
"env": {
"ESTAT_APP_ID": "<ESTAT_APP_ID>",
"CORP_APP_ID": "<CORP_APP_ID>",
"REALESTATE_API_KEY": "<REALESTATE_API_KEY>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
ESTAT_APP_IDRequired, secret | e-Stat API Application ID (required). Free at https://www.e-stat.go.jp/api/api-info/api-guide |
CORP_APP_IDOptional, secret | Corporate Number Web-API Application ID (optional). Apply at https://www.houjin-bangou.nta.go.jp/webapi/ |
REALESTATE_API_KEYOptional, secret | Real Estate Information Library API Key (optional). Apply at https://www.reinfolib.mlit.go.jp/api/request/ |
Details
| Package | [email protected] (PYPI, stdio) |
| First published | 26 Feb 2026 |
| Last updated | 26 Feb 2026 |
| Registry name | io.github.Izyuusya/japan-data-mcp |
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