← Index

io.github.Izyuusya/japan-data-mcp

io.github.Izyuusya/japan-data-mcpv0.1.1Other

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。

In-path gate · all MCP tools

Using io.github.Izyuusya/japan-data-mcp in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire
Auditable install path →Watch it hold a drift →
Trust verdict · v1 advisory · method
REVIEWstatus: PARTIALfresh until 2026-08-01 12:02 UTC
screened 2026-07-02tier: scannedgranularity: description-levelsource: registry

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidence“Declared access to public data APIs”via static_description

Limits of this verdict
  • - Semantic screen only - the deterministic conformance probe has not run on this server
  • - Confidence is reported but not yet calibrated (v1)
  • - Screen reads the tool description, not the live behavior
  • - advisory
  • - registry description only no input schema
  • - screen model 8b

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-07-31).

Contracts can change after screening, with no version bump. The gate pins io.github.Izyuusya/japan-data-mcp’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Related: how to trust an MCP server · screen before install · silent contract drift

Embed this badge

A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.

Markdown
[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-izyuusya-japan-data-mcp)](https://mcpindex.ai/server/io-github-izyuusya-japan-data-mcp)
HTML
<a href="https://mcpindex.ai/server/io-github-izyuusya-japan-data-mcp"><img src="https://mcpindex.ai/api/v1/badge/io-github-izyuusya-japan-data-mcp" alt="mcpindex verdict" height="20" /></a>
Environment variables
ESTAT_APP_ID
requiredsecret

e-Stat API Application ID (required). Free at https://www.e-stat.go.jp/api/api-info/api-guide

CORP_APP_ID
secret

Corporate Number Web-API Application ID (optional). Apply at https://www.houjin-bangou.nta.go.jp/webapi/

REALESTATE_API_KEY
secret

Real Estate Information Library API Key (optional). Apply at https://www.reinfolib.mlit.go.jp/api/request/

MCP quality score · maturity, not trust · methodology
freshness
16
completeness
10
installability
25
documentation
15
stability
5
Alternatives in Other
Labby
ai.dinglebear/labby

Local-first MCP gateway and homelab control plane with CLI, HTTP API, and web UI.

Yarr MCP
ai.dinglebear/yarr-mcp

Rust MCP and CLI server for Sonarr, Radarr, Prowlarr, Plex, Jellyfin, and download clients.

io.github.JDWilliums/jamp
io.github.JDWilliums/jamp

Agent-run site monitoring: install JAMP, read errors, uptime, vitals and traffic, resolve fixes.