ContractOS

What it does

Transforms static legal documents (PDF/DOCX) into a structured knowledge graph. It separates facts, bindings, and inferences, allowing AI to reason with grounded provenance and confidence scores rather than guessing from flat text.

Tools

• upload_contract: Uploads and indices a contract for analysis.
• ask_question: Semantic Q&A with traceable source references.
• review_against_playbook: Compares contract clauses against organizational playbooks.
• triage_nda: Performs a 10-point automated NDA screening.
• discover_hidden_facts: Surfaces implicit obligations and liability risks.
• extract_obligations: Extracts all affirmative and conditional obligations.
• generate_risk_memo: Creates a structured risk assessment with severity scoring.
• get_clause_gaps: Analyzes missing mandatory facts.
• search_contracts: Semantic search across multiple indexed contracts.
• compare_clauses: Performs cross-contract clause comparison.
• generate_report: Generates an HTML report of findings.
• clear_workspace: Resets the local workspace data.

Installation

Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "contractos": {
      "command": "/path/to/.venv/bin/python",
      "args": ["-m", "contractos.mcp.server"],
      "env": {
        "PYTHONPATH": "src",
        "ANTHROPIC_API_KEY": "your-key"
      }
    }
  }
}

Supported hosts

• Claude Desktop
• Cursor