Atlas / MCP servers / groundcobra009 / Hourei

HoureiSAFE

mcp/groundcobra009/hourei

e-Gov法令APIを使用して日本の法令情報を検索・取得するModel Context Protocolサーバー

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
3 3r · 0w · 0d
Transport
stdio
License
—
Stars
49
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

e-Gov法令APIを使用して日本の法令情報を検索・取得するMCPサーバーです。

[](https://www.npmjs.com/package/hourei-mcp-server) [](https://opensource.org/licenses/MIT)

機能

このMCPサーバーは以下のツールを提供します:

1. search_law

法令名や法令番号で法令を検索します。

パラメータ:

  • keyword (必須): 検索キーワード(法令名の一部や法令番号)
  • category (オプション): 法令の種別
  • 1: 法律
  • 2: 政令
  • 3: 省令
  • 4: 規則
  • 5: その他
  • limit (オプション): 取得する最大件数(デフォルト: 100)

2. getlawdata

法令番号を指定して法令の詳細データを取得します。

パラメータ:

  • lawNum (必須): 法令番号(例: 平成十七年法律第百十七号)

3. getlawrevision

法令の改正履歴を取得します。

パラメータ:

  • lawNum (必須): 法令番号

インストール

npm経由でインストール(推奨)

npx hourei-mcp-server

ローカル開発

git clone 
cd hourei-mcp-server
npm install

使用方法

MCPクライアントでの設定

Claude Desktopなどのクライアントの設定ファイル(~/Library/Application Support/Claude/claude_desktop_config.json)に以下を追加:

{
"mcpServers": {
"hourei": {
"command": "npx",
"args": ["-y", "hourei-mcp-server"]
}
}
}

設定後、Claude Desktopを再起動してください。

Cursor AI での設定

Cursorの設定ファイル(.cursor/mcp_config.json または設定画面)に以下を追加:

{
"mcpServers": {
"hourei": {
"command": "npx",
"args": ["-y", "hourei-mcp-server"]
}
}
}

ChatGPT Desktop での設定

ChatGPTでは、MCPサーバーのURLを指定する形式で設定します。

オプション1: npxコマンドで実行(他のクライアントと同じ)

{
"mcpServers": {
"hourei": {
"command": "npx",
"args": ["-y", "hourei-mcp-server"]
}
}
}

オプション2: URL形式で指定(SSEサーバー経由)

SSE対応サーバーを別途立ち上げた場合:

{
"mcpServers": {
"hourei": {
"url": "http://localhost:3000/sse"
}
}
}

または、リモートサーバーにデプロイした場合:

{
"mcpServers": {
"hourei": {
"url": "https://your-server.com/sse"
}
}
}

注意: 現在のバージョン(v1.0.5)はstdio接続のみ対応しています。URL形式で使用する場合は、別途SSE対応のラッパーサーバーが必要です。

Manus での設定

Read from source at commit 0c6f194fcd88OBSERVED · 2026-10-08
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.

claude-code
claude mcp add hourei-mcp-server -- npx -y [email protected]
claude-desktop
{
  "mcpServers": {
    "hourei-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ]
    }
  }
}
03

Exposed tools (3)

3 read · 0 write · 0 destructive.

ToolRiskDescription
get_law_dataread法令番号を指定して法令の詳細データを取得します。
get_law_revisionread法令の改正履歴を取得します。
search_lawread法令名や法令番号で法令を検索します。キーワード検索に対応しています。
04

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
declared (3 observation(s))
Shell
none-observed
Dependencies
not all pinned
Secrets in source
none-found

Findings (2)

LOWInventory / provenance · inv.no_license · CWE-1104
Why it matters. no LICENSE file and no repo licence
Fix. add a licence
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
package.json
@modelcontextprotocol/sdk, node-fetch
Why it matters. 2 dependency range(s) float
Fix. pin exact versions or ship a lockfile

Gates applied: no_behavioural_pass, no_license.

Audited 2026-10-08 · audit v0.4.1 · source sha 0c6f194fcd88full audit observations/trust-audit/mcp-server/groundcobra009__hourei.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-080c6f194fcd88SAFEB89first audit
06

Questions

What is the Hourei MCP server?

e-Gov法令APIを使用して日本の法令情報を検索・取得するModel Context Protocolサーバー

What tools does Hourei expose?

3 in total: 3 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Hourei safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.

What credentials does Hourei need?

No credential environment variables were found in its source, so it appears to need none.

How does Hourei run?

It speaks stdio, so it runs as a local process your client starts. It is published on npm as hourei-mcp-server at 1.0.6.

How current is this page?

The grade is for one exact copy of the source (0c6f194fcd88), read on 2026-10-08. The repository is watched and re-audited when it changes.

Advertisement