Bulgarian Law MCP Server

Bulgarian Law MCP Server

The Lex.bg alternative for the AI age.

Query 1,997 Bulgarian statutes -- from the Закон за защита на личните данни (ЗЗЛД) and Наказателен кодекс to the Граждански процесуален кодекс, Търговски закон, and more -- directly from Claude, Cursor, or any MCP-compatible client.

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

Built by Ansvar Systems -- Stockholm, Sweden

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Why This Exists

Bulgarian legal research is scattered across Lex.bg, the Държавен вестник (State Gazette), and EUR-Lex. 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 Bulgarian law
• A researcher tracing legislative provisions across 1,997 statutes

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

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

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Quick Start

Use Remotely (No Install Needed)

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

Endpoint: https://mcp.ansvar.eu/law-bg/mcp

Claude Desktop -- add to claude_desktop_config.json:

{
  "mcpServers": {
    "bulgarian-law": {
      "type": "url",
      "url": "https://mcp.ansvar.eu/law-bg/mcp"
    }
  }
}

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

{
  "github.copilot.chat.mcp.servers": {
    "bulgarian-law": {
      "type": "http",
      "url": "https://mcp.ansvar.eu/law-bg/mcp"
    }
  }
}

Use Locally (npm)

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

Cursor / VS Code:

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

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Example Queries

Once connected, just ask naturally:

• "Търсене 'защита на личните данни' -- какви задължения предвижда ЗЗЛД?"
• "Действа ли Наказателният кодекс в актуалния му вид?"
• "Намери разпоредби за търговски дружества в Търговския закон"
• "Кои европейски актове са въведени чрез Закона за електронното управление?"
• "Кои български закони прилагат GDPR?"
• "Потвърди цитат: ЗЗЛД чл. 6, ал. 1"
• "Изгради правна позиция относно задълженията за уведомяване при нарушения на сигурността"
• "Съответства ли българското законодателство на изискванията на NIS2?"

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What's Included

Verified data only -- every citation is validated against official sources (parliament.bg, Lex.bg). Zero LLM-generated content.

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See It In Action

Why This Works

Verbatim Source Text (No LLM Processing):

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

Smart Context Management:

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

Technical Architecture:

parliament.bg / Lex.bg → Parse → SQLite → FTS5 snippet() → MCP response
                            ↑                      ↑
                    Provision parser        Verbatim database query

Traditional Research vs. This MCP

Traditional: Search Lex.bg → Download PDF → Ctrl+F → Cross-reference → Check EUR-Lex for EU basis → Repeat

This MCP: "Кои разпоредби на ЗЗЛД въвеждат чл. 9 от GDPR за специалните категории данни?" → Done.

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Available Tools (13)

Core Legal Research Tools (8)

EU Law Integration Tools (5)

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EU Law Integration

Bulgaria is an EU member state. Bulgarian legislation directly transposes EU directives and implements EU regulations, creating a traceable mapping between Bulgarian and EU law.

Key areas of EU-Bulgarian law alignment:

• GDPR (2016/679) -- implemented via the Закон за защита на личните данни (ЗЗЛД, amended 2019)
• NIS2 Directive (2022/2555) -- transposed into Bulgarian cybersecurity legislation
• eIDAS Regulation (910/2014) -- applicable directly; supplemented by the Закон за електронния документ и електронните удостоверителни услуги
• DORA (2022/2554) -- financial sector digital resilience obligations
• AI Act (2024/1689) -- EU regulation applicable directly across all member states
• AML Directives -- implemented via Bulgarian anti-money laundering legislation

The EU bridge tools provide bi-directional lookup: find which Bulgarian statutes implement a given EU act, or find which EU acts underpin a given Bulgarian provision.

See EU_INTEGRATION_GUIDE.md for detailed documentation.

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Data Sources & Freshness

All content is sourced from authoritative Bulgarian legal databases:

• parliament.bg -- National Assembly of Bulgaria, official legislation database
• Lex.bg -- Consolidated Bulgarian legislation
• Държавен вестник -- Official State Gazette (primary legislative publication)
• EUR-Lex -- Official EU law database (metadata only)

Automated Freshness Checks (Daily)

A daily GitHub Actions workflow monitors all data sources:

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Security

This project uses multiple layers of automated security scanning:

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

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Important Disclaimers

Legal Advice

THIS TOOL IS NOT LEGAL ADVICE

Statute text is sourced from official Bulgarian legislative publications (parliament.bg, Lex.bg). However:

• This is a research tool, not a substitute for professional legal counsel
• Verify critical citations against primary sources (Държавен вестник) for court filings
• EU cross-references are extracted from Bulgarian statute text, not EUR-Lex full text
• Always confirm current in-force status via Lex.bg before relying on a provision professionally

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

Client Confidentiality

Queries go through the Claude API. For privileged or confidential matters, use on-premise deployment. See PRIVACY.md for Висш адвокатски съвет (Supreme Bar Council of Bulgaria) compliance guidance.

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Documentation

• EU Integration Guide -- Detailed EU cross-reference documentation
• EU Usage Examples -- Practical EU lookup examples
• Security Policy -- Vulnerability reporting and scanning details
• Disclaimer -- Legal disclaimers and professional use notices
• Privacy -- Client confidentiality and data handling

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Development

Setup

git clone https://github.com/Ansvar-Systems/Bulgarian-law-mcp
cd Bulgarian-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

Data Management

npm run ingest              # Ingest statutes from parliament.bg / Lex.bg
npm run build:db            # Rebuild SQLite database
npm run check-updates       # Check for amendments and new statutes

Performance

• Search Speed: <100ms for most FTS5 queries
• Database Size: 93 MB (efficient, portable)
• Reliability: 100% ingestion success rate

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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/bulgarian-law-mcp (This Project)

Query 1,997 Bulgarian statutes directly from Claude -- ЗЗЛД, НК, ГПК, ТЗ, and more. Full provision text with EU cross-references. npx @ansvar/bulgarian-law-mcp

@ansvar/romanian-law-mcp

Query Romanian statutes directly from Claude -- EU member, civil law tradition. npx @ansvar/romanian-law-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/sanctions-mcp

Offline-capable sanctions screening -- OFAC, EU, UN sanctions lists. pip install ansvar-sanctions-mcp

70+ national law MCPs covering Australia, Brazil, Canada, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Lithuania, Netherlands, Norway, Sweden, and more.

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Contributing

Contributions welcome! See CONTRIBUTING.md for guidelines.

Priority areas:

• Court case law expansion (Supreme Court of Cassation, Constitutional Court)
• EU Regulations MCP integration (full EU law text, CJEU case law)
• Historical statute versions and amendment tracking
• Secondary legislation (наредби, правилници)

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Roadmap

• Core statute database with FTS5 search
• Full corpus ingestion (1,997 statutes, 17,103 provisions)
• EU law integration tools
• Vercel Streamable HTTP deployment
• npm package publication
• Daily freshness checks
• Case law expansion (ВКС, КС)
• Historical statute versions (amendment tracking)
• Secondary legislation expansion

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Citation

If you use this MCP server in academic research:

@software{bulgarian_law_mcp_2026,
  author = {Ansvar Systems AB},
  title = {Bulgarian Law MCP Server: Production-Grade Legal Research Tool},
  year = {2026},
  url = {https://github.com/Ansvar-Systems/Bulgarian-law-mcp},
  note = {Comprehensive Bulgarian legal database with 1,997 statutes and 17,103 provisions}
}

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License

Apache License 2.0. See LICENSE for details.

Data Licenses

• Statutes & Legislation: Bulgarian National Assembly / Lex.bg (public domain)
• EU Metadata: EUR-Lex (EU public domain)

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About Ansvar Systems

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

So we're open-sourcing it. Navigating 1,997 statutes shouldn't require a law degree.

ansvar.eu -- Stockholm, Sweden

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