# Japan Law Search (remote · horei-mcp.easakura.workers.dev)

Full-text search of all current Japanese laws (official e-Gov data), down to exact article text.

- Trust score: 57/100 (low)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `horei-mcp.easakura.workers.dev`: 63/100, [markdown](https://verifymcp.io/servers/easakura-japan-law-search-mcp/horei-mcp.md), [page](https://verifymcp.io/servers/easakura-japan-law-search-mcp/horei-mcp)
- remote · `horei-mcp.easakura.workers.dev`: 57/100 (this document), [markdown](https://verifymcp.io/servers/easakura-japan-law-search-mcp/horei-mcp-2.md), [page](https://verifymcp.io/servers/easakura-japan-law-search-mcp/horei-mcp-2)

## Channel facts

- Endpoint: `https://horei-mcp.easakura.workers.dev/sse`
- Transports: `sse`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS check failed: the endpoint is reachable over plaintext HTTP.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 40/100
  - Verified sse transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 356 tokens (~118/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http easakura-japan-law-search-mcp https://horei-mcp.easakura.workers.dev/sse
```

### Codex

```toml
[mcp_servers.easakura-japan-law-search-mcp]
url = "https://horei-mcp.easakura.workers.dev/sse"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "easakura-japan-law-search-mcp": {
      "type": "remote",
      "url": "https://horei-mcp.easakura.workers.dev/sse",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add easakura-japan-law-search-mcp --url https://horei-mcp.easakura.workers.dev/sse --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  easakura-japan-law-search-mcp:
    url: "https://horei-mcp.easakura.workers.dev/sse"
```

### Other

```json
{
  "mcpServers": {
    "easakura-japan-law-search-mcp": {
      "type": "http",
      "url": "https://horei-mcp.easakura.workers.dev/sse"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 57, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-01 (score 56, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 55, −4)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 59, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 58, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 57, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 57)

First indexed and scored.

## MCP tools (3)

### `search_laws` (~167 tokens)

日本の法令を検索

日本の現行法令（法律・政令・省令など約1万件）を政府公式データベース（e-Gov）から検索する。search_in=full_text（既定）は条文本文の全文検索、search_in=titleは法令名検索。結果のlaw_idをget_law_structure / get_law_articleに渡すと条文を参照できる。

Input parameters:

- `limit` (integer): 最大件数（1〜20）
- `query` (string, required): 検索語（例: 電子署名 / 個人情報 / 解雇）
- `search_in` (string): full_text=条文本文を全文検索（既定） / title=法令名で検索

### `get_law_structure` (~90 tokens)

法令の目次（章・条の一覧）を取得

law_idを指定して法令の構造（章・節・条の見出し一覧）を取得する。どの条文を読むべきか当たりを付けるのに使う。law_idはsearch_lawsの結果に含まれる。

Input parameters:

- `law_id` (string, required): 法令ID（例: 412AC0000000102）

### `get_law_article` (~99 tokens)

法令の条文本文を取得

law_idと条番号を指定して条文の本文を取得する。条番号は「3」「第3条」「第三条の二」「3の2」のいずれの形式でもよい。

Input parameters:

- `article` (string, required): 条番号（例: 3 / 第3条 / 第三条の二）
- `law_id` (string, required): 法令ID（例: 412AC0000000102）

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/easakura-japan-law-search-mcp/horei-mcp-2#diagnostics

## Score history

- 2026-08-03: 57
- 2026-08-02: 56
- 2026-08-01: 56
- 2026-07-31: 55
- 2026-07-30: 59
- 2026-07-29: 59
- 2026-07-28: 58
- 2026-07-27: 57
- 2026-07-26: 57

## Links

- Remote endpoint: https://horei-mcp.easakura.workers.dev/sse
- Repository: https://github.com/easakura/japan-law-search-mcp
- Changelog RSS feed: https://verifymcp.io/servers/easakura-japan-law-search-mcp/horei-mcp-2/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/easakura-japan-law-search-mcp/horei-mcp-2/changelog.json
- HTML version of this page: https://verifymcp.io/servers/easakura-japan-law-search-mcp/horei-mcp-2