Labor Law MCP Server
Retrieve Japanese labor laws and administrative notifications for AI-verified accuracy.
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Overview
This MCP server enables AI models to reference authoritative Japanese labor and social insurance regulations directly. By connecting to the e-Gov Law API, the MHLW database, and the Japan Advanced Information Center of Safety and Health (JAISH), it provides tools to fetch specific legal articles and search for official notifications. This allows an AI assistant to verify its responses against original source texts, effectively reducing hallucinations regarding legal statutes. The server includes presets for 45 major Japanese laws, including the Labor Standards Act and the Industrial Safety and Health Act. It supports natural language queries, allowing users to reference laws by common abbreviations such as "労基法" or "安衛法." The provided tools facilitate a retrieval-augmented workflow where the model fetches, checks, and corrects its draft answers against the official source data.
Our verdict
This server receives a security score of 24/100, placing it at a high risk level. The score reflects that the project is community-maintained and has not undergone editorial review, necessitating caution when integrating it into sensitive workflows. Users should note that the software lacks defined authentication mechanisms and may require manual verification of its output, given its status as an unverified, independent implementation.
- Supports 45 major Japanese labor and safety laws.
- Enables AI to verify legal answers against official sources.
- Minimal dependency footprint with only two direct dependencies.
- Handles common legal abbreviations for improved query ease.
- Community-maintained project lacking official vendor verification.
- High-risk score due to absence of independent security review.
- Inactivity observed with no commits for over 150 days.
Setup
{
"mcpServers": {
"labor-law-mcp": {
"args": [
"-y",
"labor-law-mcp"
],
"command": "npx"
}
}
}Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows), then restart Claude Desktop. Some servers require API keys or tokens as environment variables — check the project's README and add an "env" object if needed.
- No read-only mode — running this grants full read/write access.
- No built-in authentication — anyone with access to this config can invoke every tool it exposes.
Tools
| Tool | Description | Risk |
|---|---|---|
| get_law | e-Gov法令APIから条文を取得。法令名 + 条番号で指定 | low |
| search_law | キーワードで法令を検索 | low |
| search_mhlw_tsutatsu | 厚労省法令等DBから通達をキーワード検索 | low |
| get_mhlw_tsutatsu | 厚労省通達の本文を取得。data_idで指定 | low |
| search_jaish_tsutatsu | JAISH安全衛生情報センターから安衛通達を検索 | low |
| get_jaish_tsutatsu | JAISH安衛通達の本文を取得。URLで指定 | low |
Compatibility
| Client | Local | Docker | Remote | Read-only |
|---|---|---|---|---|
| Claude Desktop | ||||
| Cursor | ||||
| VS Code | ||||
| Windsurf | ||||
| ChatGPT |
Frequently asked questions
›Does this server require any API keys to function?
No, the server fetches data directly from public sources like the e-Gov Law API, the MHLW Law Database, and the Japan Industrial Safety and Health Association website without requiring individual API keys.
›Can I use abbreviations when requesting specific labor laws?
Yes, the server supports 12 common abbreviations, such as '労基法' for 労働基準法 or '安衛法' for 労働安全衛生法.
›How many laws are pre-configured in the system?
The server includes 45 major labor and social insurance laws pre-configured as a law_id preset for easier access.
›How does the server help prevent AI hallucinations?
The server provides a workflow where Claude retrieves actual text from government databases via its tools to cross-verify, check, and correct its draft answers against official legal sources.
›Is an installation required to use this server?
If you use the recommended npx method, no installation is required; you simply add the provided JSON configuration to your Claude Desktop or Claude Code settings.
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