Swiss Law MCP Server

The Fedlex alternative for the AI age.

Query Swiss legislation -- covering data protection, cybersecurity, corporate law, and more -- directly from Claude, Cursor, or any MCP-compatible client.

If you're building legal tech, compliance tools, or doing Swiss legal research, this is your verified reference database.

Built by Ansvar Systems -- Stockholm, Sweden

Why This Exists

Swiss legal research is scattered across official government databases, commercial legal platforms, and institutional archives. Whether you're:

• A lawyer validating citations in a brief or contract
• A compliance officer checking if a statute is still in force
• A legal tech developer building tools on Swiss law
• A researcher tracing legislative history

...you shouldn't need dozens of browser tabs and manual PDF cross-referencing. Ask Claude. Get the exact provision. With context.

This MCP server makes Swiss law searchable, cross-referenceable, and AI-readable.

Quick Start

Use Remotely (No Install Needed)

Connect directly to the hosted version -- zero dependencies, nothing to install.

Endpoint: https://switzerland-law-mcp.vercel.app/mcp

| Client | How to Connect | |--------|---------------| | Claude.ai | Settings > Connectors > Add Integration > paste URL | | Claude Code | claude mcp add switzerland-law --transport http https://switzerland-law-mcp.vercel.app/mcp | | Claude Desktop | Add to config (see below) | | GitHub Copilot | Add to VS Code settings (see below) |

Claude Desktop -- add to claude_desktop_config.json:

{
  "mcpServers": {
    "switzerland-law": {
      "type": "url",
      "url": "https://switzerland-law-mcp.vercel.app/mcp"
    }
  }
}

GitHub Copilot -- add to VS Code settings.json:

{
  "github.copilot.chat.mcp.servers": {
    "switzerland-law": {
      "type": "http",
      "url": "https://switzerland-law-mcp.vercel.app/mcp"
    }
  }
}

Use Locally (npm)

npx @ansvar/switzerland-law-mcp

Claude Desktop -- add to claude_desktop_config.json:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "switzerland-law": {
      "command": "npx",
      "args": ["-y", "@ansvar/switzerland-law-mcp"]
    }
  }
}

Cursor / VS Code:

{
  "mcp.servers": {
    "switzerland-law": {
      "command": "npx",
      "args": ["-y", "@ansvar/switzerland-law-mcp"]
    }
  }
}

Example Queries

Once connected, just ask naturally:

• "What does the Swiss data protection law say about consent?"
• "Search for cybersecurity requirements in Swiss legislation"
• "Is this statute still in force?"
• "Find provisions about personal data in Swiss law"
• "What EU directives does this Swiss law implement?"
• "Which Swiss laws implement the GDPR?"
• "Validate this legal citation"
• "Build a legal stance on data breach notification requirements"

Key Legislation Covered

| Law | SR Number | Significance | |-----|-----------|-------------| | Federal Act on Data Protection (nFADP/DSG) | SR 235.1 | New data protection law effective Sep 1, 2023; replaces 1992 DPA; aligns with GDPR with Swiss-specific features (fines on individuals, no DPO requirement) | | Federal Act on Information Security (ISA) | SR 128.1 | Federal information security framework for government and critical infrastructure | | Telecommunications Act (TCA) | SR 784.10 | Regulates telecommunications services and infrastructure | | Code of Obligations (OR) | SR 220 | Core contract and company law; contains corporate governance provisions | | Swiss Criminal Code (StGB) | SR 311.0 | Art. 143bis criminalizes unauthorized computer access; Art. 143 covers data theft; Art. 144bis covers data damage | | Federal Act on Electronic Signatures (ZertES) | SR 943.03 | Electronic signatures and certification services framework | | Federal Act on Surveillance of Post and Telecommunications (BÜPF) | SR 780.1 | Lawful interception and telecommunications surveillance framework | | Federal Constitution | SR 101 | Art. 13 guarantees the right to privacy; foundational for all data protection law |

Deployment Tier

SMALL -- Single tier, bundled SQLite database shipped with the npm package.

Estimated database size: ~100-180 MB (full corpus of Swiss federal legislation via Fedlex)

Available Tools (13)

Core Legal Research Tools (8)

| Tool | Description | |------|-------------| | search_legislation | FTS5 full-text search across all provisions with BM25 ranking | | get_provision | Retrieve specific provision by statute + chapter/section | | check_currency | Check if statute is in force, amended, or repealed | | validate_citation | Validate citation against database (zero-hallucination check) | | build_legal_stance | Aggregate citations from statutes for a legal topic | | format_citation | Format citations per Swiss conventions (full/short/pinpoint) | | list_sources | List all available statutes with metadata | | about | Server info, capabilities, and coverage summary |

EU/International Law Integration Tools (5)

| Tool | Description | |------|-------------| | get_eu_basis | Get EU directives/regulations for Swiss statute | | get_swiss_implementations | Find Swiss laws implementing EU act | | search_eu_implementations | Search EU documents with Swiss implementation counts | | get_provision_eu_basis | Get EU law references for specific provision | | validate_eu_compliance | Check implementation status of EU directives |

Why This Works

Verbatim Source Text (No LLM Processing):

• All statute text is ingested from official Swiss government sources
• Provisions are returned unchanged from SQLite FTS5 database rows
• Zero LLM summarization or paraphrasing -- the database contains regulation text, not AI interpretations

Smart Context Management:

• Search returns ranked provisions with BM25 scoring (safe for context)
• Provision retrieval gives exact text by statute identifier + chapter/section
• Cross-references help navigate without loading everything at once

Technical Architecture:

Official Sources --> Parse --> SQLite --> FTS5 snippet() --> MCP response
                     ^                       ^
              Provision parser         Verbatim database query

Traditional Research vs. This MCP

| Traditional Approach | This MCP Server | |---------------------|-----------------| | Search official databases by statute number | Search by plain language | | Navigate multi-chapter statutes manually | Get the exact provision with context | | Manual cross-referencing between laws | build_legal_stance aggregates across sources | | "Is this statute still in force?" --> check manually | check_currency tool --> answer in seconds | | Find EU basis --> dig through EUR-Lex | get_eu_basis --> linked EU directives instantly | | No API, no integration | MCP protocol --> AI-native |

Data Sources & Freshness

All content is sourced from authoritative Swiss legal databases:

• Fedlex -- Official Swiss government legal database

Verified data only -- every citation is validated against official sources. Zero LLM-generated content.

Security

This project uses multiple layers of automated security scanning:

| Scanner | What It Does | Schedule | |---------|-------------|----------| | CodeQL | Static analysis for security vulnerabilities | Weekly + PRs | | Semgrep | SAST scanning (OWASP top 10, secrets, TypeScript) | Every push | | Gitleaks | Secret detection across git history | Every push | | Trivy | CVE scanning on filesystem and npm dependencies | Daily | | Socket.dev | Supply chain attack detection | PRs | | Dependabot | Automated dependency updates | Weekly |

See SECURITY.md for the full policy and vulnerability reporting.

Important Disclaimers

Legal Advice

THIS TOOL IS NOT LEGAL ADVICE

Statute text is sourced from official Swiss government publications. However:

• This is a research tool, not a substitute for professional legal counsel
• Court case coverage is limited -- do not rely solely on this for case law research
• Verify critical citations against primary sources for court filings
• EU cross-references are extracted from statute text, not EUR-Lex full text

Before using professionally, read: DISCLAIMER.md | SECURITY.md

Client Confidentiality

Queries go through the Claude API. For privileged or confidential matters, use on-premise deployment.

Development

Setup

git clone https://github.com/Ansvar-Systems/Switzerland-law-mcp
cd Switzerland-law-mcp
npm install
npm run build
npm test

Running Locally

npm run dev                                       # Start MCP server
npx @anthropic/mcp-inspector node dist/index.js   # Test with MCP Inspector

Related Projects: Complete Compliance Suite

This server is part of Ansvar's Compliance Suite -- MCP servers that work together for end-to-end compliance coverage:

@ansvar/eu-regulations-mcp

Query 49 EU regulations directly from Claude -- GDPR, AI Act, DORA, NIS2, MiFID II, eIDAS, and more. Full regulatory text with article-level search. npx @ansvar/eu-regulations-mcp

@ansvar/us-regulations-mcp

Query US federal and state compliance laws -- HIPAA, CCPA, SOX, GLBA, FERPA, and more. npx @ansvar/us-regulations-mcp

@ansvar/security-controls-mcp

Query 261 security frameworks -- ISO 27001, NIST CSF, SOC 2, CIS Controls, SCF, and more. npx @ansvar/security-controls-mcp

@ansvar/automotive-cybersecurity-mcp

Query UNECE R155/R156 and ISO 21434 -- Automotive cybersecurity compliance. npx @ansvar/automotive-cybersecurity-mcp

30+ national law MCPs covering Australia, Brazil, Canada, China, Denmark, Finland, France, Germany, Ghana, Iceland, India, Ireland, Israel, Italy, Japan, Kenya, Netherlands, Nigeria, Norway, Singapore, Slovenia, South Korea, Sweden, Switzerland, Thailand, UAE, UK, and more.

Contributing

Contributions welcome! See CONTRIBUTING.md for guidelines.

Priority areas:

• Court case law expansion
• EU cross-reference improvements
• Historical statute versions and amendment tracking
• Additional statutory instruments and regulations

Roadmap

• [x] Core statute database with FTS5 search
• [x] EU/international law cross-references
• [x] Vercel Streamable HTTP deployment
• [x] npm package publication
• [ ] Court case law expansion
• [ ] Historical statute versions (amendment tracking)
• [ ] Preparatory works / explanatory memoranda
• [ ] Lower court and tribunal decisions

Citation

If you use this MCP server in academic research:

@software{switzerland_law_mcp_2025,
  author = {Ansvar Systems AB},
  title = {Swiss Law MCP Server: AI-Powered Legal Research Tool},
  year = {2025},
  url = {https://github.com/Ansvar-Systems/Switzerland-law-mcp},
  note = {Swiss legal database with full-text search and EU cross-references}
}

License

Apache License 2.0. See LICENSE for details.

Data Licenses

• Statutes & Legislation: Swiss Government (public domain (Swiss Confederation))
• EU Metadata: EUR-Lex (EU public domain)

About Ansvar Systems

We build AI-accelerated compliance and legal research tools for the global market. This MCP server started as our internal reference tool -- turns out everyone building compliance tools has the same research frustrations.

So we're open-sourcing it.

ansvar.eu -- Stockholm, Sweden