@ansvar/french-law-mcp

v2.0.0

Published

8 days ago

French Law MCP — French legislation via Model Context Protocol

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mcp model-context-protocol ai claude fr-law france legal compliance legifrance ansvar

French Law MCP Server

The Legifrance alternative for the AI age.

Query 3,953 French laws -- from the Loi Informatique et Libertes and Code penal to the Code de commerce, Code civil, and more -- directly from Claude, Cursor, or any MCP-compatible client.

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

Built by Ansvar Systems -- Stockholm, Sweden

Why This Exists

French legal research is scattered across Legifrance, the Journal Officiel, and commercial platforms like Dalloz and LexisNexis. Whether you're:

A lawyer validating citations in a brief or contract under French law
A compliance officer checking RGPD implementation under the Loi Informatique et Libertes
A legal tech developer building tools on French legislation
A researcher tracing legislative history from the Code Napoleon to modern codes

...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 French 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://french-law-mcp.vercel.app/mcp

| Client | How to Connect | |--------|---------------| | Claude.ai | Settings > Connectors > Add Integration > paste URL | | Claude Code | claude mcp add french-law --transport http https://french-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": {
    "french-law": {
      "type": "url",
      "url": "https://french-law-mcp.vercel.app/mcp"
    }
  }
}

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

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

Use Locally (npm)

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

Cursor / VS Code:

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

Example Queries

Once connected, just ask naturally:

"Que dit la Loi Informatique et Libertes sur le consentement ?"
"Rechercher les dispositions sur les donnees personnelles dans le droit francais"
"Le Code de commerce est-il toujours en vigueur ?"
"Quelles directives europeennes la loi francaise transpose-t-elle ?"
"What does the French Penal Code say about cybercrime?"
"Find provisions about data breach notification in French law"
"Validate this legal citation"
"Build a legal stance on RGPD implementation in France"

Available Tools (12)

search_legislation -- FTS5 full-text search across all provisions with BM25 ranking
get_provision -- Retrieve specific provision by statute + article
validate_citation -- Validate citation against database (zero-hallucination check)
format_citation -- Format citations per French conventions (full/short/pinpoint)
build_legal_stance -- Aggregate citations from statutes for a legal topic
check_currency -- Check if statute is in force, amended, or repealed
get_eu_basis -- Get EU directives/regulations for French statute
get_french_implementations -- Find French laws implementing EU act
search_eu_implementations -- Search EU documents with French implementation counts
get_provision_eu_basis -- Get EU law references for specific provision
validate_eu_compliance -- Check implementation status of EU directives
about -- Server info, capabilities, and coverage summary

Why This Works

Verbatim Source Text (No LLM Processing):

All statute text is ingested from official Legifrance/DILA open data sources
Provisions are returned unchanged from SQLite FTS5 database rows
Zero LLM summarization or paraphrasing -- the database contains regulation text, not AI interpretations

Technical Architecture:

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

Data Sources & Freshness

All content is sourced from authoritative French legal databases:

Legifrance -- Official French government legal database (DILA open data)
EUR-Lex -- Official EU law database (metadata only)

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

Automated Freshness Checks

check-updates.yml runs daily and checks for newer LEGI archive publication timestamps
Opens/updates data-update issues when updates or errors are detected
Supports auto_update=true dispatch for automated ingest, rebuild, validate, and commit/tag

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 Legifrance/DILA 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/French-law-mcp
cd French-law-mcp
npm install
npm run build
npm test

Development Commands

npm run dev              # Run stdio MCP server from source
npm run start            # Run built stdio MCP server
npm test                 # Unit/integration + contract tests
npm run test:mcp         # Protocol-level MCP output envelope test
npm run test:contract    # Golden contract suite
npm run build:db         # Build SQLite DB from seeds
npm run ingest:legi      # Ingest from LEGI archive into seeds
npm run check-updates    # Check source freshness (LEGI archive delta)
npm run drift:detect     # Detect upstream hash drift from anchors
npm run validate         # test + contract

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

70+ national law MCPs covering Australia, Belgium, Brazil, Canada, China, Denmark, Finland, Germany, Ghana, Iceland, India, Ireland, Israel, Italy, Japan, Kenya, Netherlands, Nigeria, Norway, Singapore, Slovenia, South Korea, Spain, 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 codes and regulatory instruments

Roadmap

[x] Core statute database with FTS5 search
[x] EU/international law cross-references
[x] Vercel Streamable HTTP deployment
[x] npm package publication
[x] Full corpus ingestion (3,953 laws, 193,681 provisions)
[ ] Court case law expansion
[ ] Historical statute versions (amendment tracking)
[ ] Travaux preparatoires integration

Citation

If you use this MCP server in academic research:

@software{french_law_mcp_2025,
  author = {Ansvar Systems AB},
  title = {French Law MCP Server: AI-Powered Legal Research Tool},
  year = {2025},
  url = {https://github.com/Ansvar-Systems/French-law-mcp},
  note = {French legal database with 3,953 laws and EU cross-references}
}

License

Apache License 2.0. See LICENSE for details.

Data Licenses

Statutes & Legislation: French Government / DILA (Licence Ouverte / Open Licence)
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. Navigating 3,953 laws shouldn't require a law degree.

ansvar.eu -- Stockholm, Sweden