Contract law expert MCP server. Provides structured intelligence for contract review: clause analysis, compliance mapping, IP provision guidance, negotiation red flags, risk assessment, and business process threat patterns.

Built for the Ansvar threat modeling platform. Uses the Model Context Protocol to give AI agents queryable access to contract law knowledge.

This is a reference data server. It does not store sample contract language, draft contracts, or provide legal advice. It answers questions like "What clauses does a DPA need for GDPR Art 28?", "What are the IP risks in a work-for-hire agreement?", and "What negotiation red flags exist in this MSA's liability cap?".

Run directly with npx (stdio transport):

npx @ansvar/contract-law-mcp

Or install as a dependency:

npm install @ansvar/contract-law-mcp

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

A public Vercel endpoint is available (no authentication):

https://contract-law-mcp.vercel.app/mcp

Health check: https://contract-law-mcp.vercel.app/health

Connect from any MCP client (Claude Desktop, ChatGPT, Cursor, VS Code, GitHub Copilot):

https://mcp.ansvar.eu/contract-law/mcp

Claude Code:

claude mcp add contract-law --transport http https://mcp.ansvar.eu/contract-law/mcp

Claude Desktop / Cursor (claude_desktop_config.json):

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

No authentication required. See all Ansvar MCP endpoints.

Current state: Seed data (v1.0) is AI-curated from the authoritative sources listed below. Clause IDs, article references, and enforcement examples are based on real regulatory text, but have not yet been machine-ingested from upstream APIs. Ingestion scripts exist as scaffolds and will progressively replace AI-curated entries with source-verified data. ISO and SOC 2 content is Ansvar-authored summaries referencing control numbers (original standards are paywalled).

• Ingestion scripts fetch upstream data and update seed JSON files
• Drift detection runs weekly (GitHub Actions) and opens issues when upstream data changes
• Database is rebuilt from seed data on every release
• Every tool response includes _metadata.built_at timestamp and freshness disclaimer

# Install dependencies
npm install

# Build the SQLite database from seed JSON
npm run build:db

# Run in development mode (stdio)
npm run dev

# Run unit tests
npm test

# Run contract tests (golden tests)
npm run test:contract

# Type-check
npm run lint

# Full validation (lint + unit + contract)
npm run validate

# Run ingestion scripts (fetch upstream data)
npm run ingest

# Check for upstream data drift
npm run drift:detect

├── src/
│   ├── index.ts              # stdio entry point
│   ├── constants.ts           # server name, version, env var names
│   ├── utils/
│   │   ├── fts-query.ts       # FTS5 query sanitization and variant generation
│   │   └── metadata.ts        # ToolResponse<T> wrapper with _metadata
│   └── tools/
│       ├── registry.ts        # tool registration (all 24 tools)
│       └── *.ts               # individual tool handlers
├── api/
│   ├── mcp.ts                 # Vercel Streamable HTTP entry point
│   └── health.ts              # health/version endpoint
├── data/
│   └── seed/                  # JSON seed files
├── scripts/
│   ├── build-db.ts            # seed JSON → SQLite database
│   ├── ingest.ts              # orchestrator for all ingestion
│   ├── ingest-gdpr.ts         # EUR-Lex GDPR → JSON
│   ├── ingest-edpb.ts         # EDPB guidelines → JSON
│   ├── ingest-nis2.ts         # NIS2 extraction → JSON
│   ├── ingest-dora.ts         # DORA extraction → JSON
│   ├── ingest-nist.ts         # NIST 800-161 → JSON
│   ├── drift-detect.ts        # upstream change detection
│   └── lib/fetcher.ts         # HTTP client with retry/ETag/caching
├── tests/                     # unit tests (vitest)
├── __tests__/contract/        # golden contract tests
└── fixtures/                  # golden test fixtures

Apache-2.0. See LICENSE for details.

Copyright 2026 Ansvar Systems AB.