korean-law-mcp

Overview

This is a production-ready MCP server that provides access to Korean legal information through the Korean Law Information Service API. It transforms 41 government APIs into 17 specialized tools that enable legal professionals, researchers, and citizens to search laws, precedents, ordinances, and treaties. The server includes advanced features like citation verification to prevent AI hallucinations, impact mapping to visualize legal clause effects, time travel for automatic diff between legal versions at different dates, and a 5-step citizen action guide. The implementation is in TypeScript and offers both HTTP and CLI interfaces for seamless integration with AI assistants like Claude Desktop, Cursor, Windsurf, and Zed.

Try asking AI

After installing, here are 6 things you can ask your AI assistant:

• impact_map

  Generate a graph showing the impact of a specific article, referencing related court decisions, constitutional court rulings, and administrative regulations.

  Try:민법 제103조 인용한 판례Try:Show me the impact of Article 103 of the Civil Code
• time_travel

  Compare two versions of a law at different points in time, showing added(+), removed(-), and changed(△) articles.

  Try:개인정보보호법 2020-01-01 vs 2025-11-01Try:Compare the Personal Information Protection Law between 2020 and 2025
• action_plan

  Create a 5-step actionable guide for citizens facing legal issues, identifying applicable laws, precedents, and necessary documents.

  Try:전세금 못 받았어Try:What should I do if I didn't get my security deposit back?
• verify_citations

  Verify legal citations in text against the official law database to detect hallucinations or non-existent articles.

  Try:Check if these citations are correct: 민법 제750조, 근로기준법 제60조 제1항, 상법 제401조의2 제7항Try:Verify these legal references for accuracy
• search_law

  Search for Korean laws by name, keyword, or article number with automatic alias resolution.

  Try:근로기준법 제74조 알려줘Try:Find information about building construction permits
• get_law_text

  Retrieve the full text of a specific law, including amendments and historical changes.

  Try:민법 전문 조회Try:Get the full text of the Civil Code with amendments
• search_decisions

  Search for court decisions, constitutional court rulings, or administrative appeals across 17 domains.

  Try:대법원에서 부동산 계약 관련 판례 검색Try:Find Supreme Court precedents on real estate contracts
• get_decision_text

  Retrieve the full text of a specific court decision, with options for abbreviated or full versions.

  Try:2020다12345 판결문 전문 보여줘Try:Get the full text of case number 2020다12345
• get_law_system_tree

  Show the hierarchical structure of a law, including related administrative regulations and local ordinances.

  Try:건축법의 체계도 보여줘Try:Show the system hierarchy of the Building Act
• get_annexes

  Retrieve appendices, forms, and reference tables related to specific laws or regulations.

  Try:식품위생법 별표 처분기준 조회Try:Get penalty standards for the Food Sanitation Act
• track_amendment_history

  Track the amendment history of a specific law article and map related precedents over time.

  Try:근로기준법 개정 이력 타임라인Try:Show the amendment history of the Labor Standards Act
• check_ordinance_compliance

  Check if a local ordinance complies with higher-level laws by comparing with unconstitutional decisions and administrative cases.

  Try:주차 조례 상위법 적합성 검사Try:Check if parking ordinances comply with higher-level laws

Comparable tools

Installation

npm install -g korean-law-mcp

{
  "mcpServers": {
    "korean-law": {
      "command": "npx",
      "args": ["korean-law-mcp"]
    }
  }
}

docker run -p 8080:8080 chrisryugj/korean-law-mcp

curl https://korean-law-mcp.fly.dev/mcp

FAQ

How many legal APIs does this server cover?

The server covers 41 Korean government APIs, transformed into 17 MCP tools for easier access and functionality.

Can I use this with Claude AI?

Yes, it works with Claude Desktop, Claude.ai, and other compatible AI assistants through the MCP protocol.

How does the citation verification feature work?

It extracts legal citations from user input, cross-references them with the official Korean Law Information Service database, and flags non-existent or incorrect citations.

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