# Korean Law MCP (MCP server)

> Korean Law MCP is an MCP server that adds tools to AI assistants such as Claude Desktop, Claude Code and Cursor. 법제처 국가법령정보를 LLM에서 바로 조회하는 MCP 서버. 법령·판례·조례 검색과 인용 검증 | MCP server for Korean law — search… It has 2,645 GitHub stars, is released under the MIT license and runs locally with npx -y korean-law-mcp.

법제처 42개 API를 10개 도구로. 법령, 판례, 행정규칙, 자치법규, 조약, 해석례(국세청 포함) + LLM 환각 방지 인용 검증(법령·판례, 실존+내용) + 조문 영향 그래프 + 시점 비교 자동 diff + 이럴 땐 이렇게 — 5단계 안내 + 판례 생사 확인(Citator) + 행위시법 판단 + 조례 정비 레이더 + 폐지 법령 후속 규정 안내를 AI 어시스턴트나 터미널에서 바로 사용.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/chrisryugj/korean-law-mcp |
| GitHub stars | 2,645 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: korean-law-mcp |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Other |
| Latest release | v4.15.6 (Oct 5, 2026) |
| Last commit | Oct 5, 2026 |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "korean-law-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "korean-law-mcp"
      ],
      "env": {
        "LAW_OC": "your-value",
        "LAW_API_PROTOCOL": "your-value"
      }
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --env LAW_OC=your-value --env LAW_API_PROTOCOL=your-value --transport stdio korean-law-mcp -- npx -y korean-law-mcp
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "korean-law-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "korean-law-mcp"
      ],
      "env": {
        "LAW_OC": "your-value",
        "LAW_API_PROTOCOL": "your-value"
      }
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "korean-law-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "korean-law-mcp"
      ],
      "env": {
        "LAW_OC": "your-value",
        "LAW_API_PROTOCOL": "your-value"
      }
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

## Environment variables

- `LAW_OC`: Shown in the README's example configuration.
- `LAW_API_PROTOCOL`: Shown in the README's example configuration.

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