Contract Review Skill 📝

AI-powered contract analysis that identifies risks and generates professional review reports.

🚀 Quick Try

Live Demo: Deploy your own instance using the button above, or run locally.

Claude Desktop/Cursor: After deployment, add to your MCP config:

{
  "mcpServers": {
    "contract-review": {
      "url": "https://contract-review-skill.YOUR_SUBDOMAIN.workers.dev/mcp"
    }
  }
}

What is this?

Contract Review Skill is a Claude Agent Skill that helps you analyze contracts automatically. It's not just text extraction — it's intelligent review with domain knowledge.

Key Features

• 🔍 Risk Detection: Identifies 15+ common risk patterns (restrictions, liability, IP, etc.)
• 📄 PDF Support: Handles text PDFs, scanned documents, and mixed files
• 🔏 Visual Understanding: Detects stamps, signatures, and validates completeness
• 📊 Structured Output: Generates Markdown or DOCX reports
• 🌐 Bilingual: Supports both English and Chinese contracts
• ☁️ Cloud Ready: Deploy to Cloudflare Workers for free

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🎯 Three Ways to Use

Option 1: Claude Desktop / Cursor (MCP)

Add to ~/.config/claude/config.json or Cursor settings:

{
  "mcpServers": {
    "contract-review": {
      "url": "https://contract-review-skill.workers.dev/mcp"
    }
  }
}

Then in Claude/Cursor, just say:

"Analyze this employment contract and identify risks"

Option 2: HTTP API

# Analyze a contract
curl -X POST https://contract-review-skill.workers.dev/api/analyze \
  -H "Content-Type: application/json" \
  -d '{"content": "CONTRACT TEXT HERE...", "jurisdiction": "us"}'

# Check completeness
curl -X POST https://contract-review-skill.workers.dev/api/check \
  -H "Content-Type: application/json" \
  -d '{"content": "CONTRACT TEXT HERE..."}'

# Extract key terms
curl -X POST https://contract-review-skill.workers.dev/api/extract \
  -H "Content-Type: application/json" \
  -d '{"content": "CONTRACT TEXT HERE..."}'

Option 3: Local CLI (Python)

# Clone the repository
git clone https://github.com/claude-office-skills/contract-review-skill.git
cd contract-review-skill

# Install dependencies
pip install -r requirements.txt

# Set your Claude API key
export ANTHROPIC_API_KEY="your-api-key"

# Analyze a contract
python cli.py analyze path/to/contract.pdf

# Generate a detailed report
python cli.py analyze path/to/contract.pdf --output report.md --format markdown

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☁️ Deploy Your Own (Free)

Cloudflare Workers (Recommended)

1. One-Click Deploy

   

2. Manual Deploy

   cd worker
   npm install
   
   # Set your API key
   wrangler secret put ANTHROPIC_API_KEY
   
   # Deploy
   npm run deploy

3. GitHub Actions (Auto-Deploy)

   Set these secrets in your GitHub repo:

   • CF_API_TOKEN: Cloudflare API token (create here)
   • CF_ACCOUNT_ID: Your Cloudflare account ID
   • ANTHROPIC_API_KEY: Your Claude API key

   Push to main branch and it auto-deploys!

Free Tier Limits

Resource	Free Allowance
Requests	100,000/day
CPU Time	10ms/request
Storage	10GB (R2)

This is more than enough for testing and small teams.

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📊 Architecture

Note: This is the Advanced version of Claude Office Skills. For simple usage, just copy a SKILL.md file - no deployment needed!

This repository provides the Advanced (Power Users) features shown on the right side of the diagram.

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📝 Example Output

# Contract Analysis Report

## Executive Summary
This is a standard employment agreement with several high-risk clauses 
that require attention before signing.

## Identified Risks

### 🔴 High Risk

1. **Unlimited Liability Clause** (Section 8.2)
   - Issue: No cap on indemnification
   - Recommendation: Add liability cap at 12 months of fees

2. **Broad IP Assignment** (Section 5.1)
   - Issue: Assigns all work product including pre-existing IP
   - Recommendation: Exclude pre-existing IP from assignment

### 🟡 Medium Risk

3. **Non-Compete (3 years)** (Section 9)
   - Issue: Duration exceeds California law limits
   - Recommendation: Reduce to 1 year or remove

## Completeness Check
- ✅ Parties Identified
- ✅ Effective Date
- ✅ Term Duration
- ⚠️ Governing Law (implied, not explicit)
- ❌ Dispute Resolution clause missing

## Overall Assessment: ⚠️ REVIEW NEEDED

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🔧 API Reference

MCP Tools

Tool	Description
analyze_contract	Full risk analysis of a contract
check_completeness	Verify all required elements present
extract_key_terms	Extract structured data from contract
list_jurisdictions	List available legal knowledge bases

HTTP Endpoints

Endpoint	Method	Description
/api/analyze	POST	Analyze contract for risks
/api/check	POST	Check contract completeness
/api/extract	POST	Extract key terms as JSON
/api/jurisdictions	POST	List jurisdiction knowledge
/mcp	POST	MCP protocol endpoint
/health	GET	Health check

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🌍 Supported Jurisdictions

Code	Name	Status
us	United States	✅ Full
eu	European Union	✅ Full
cn	China	✅ Full
auto	Auto-detect	✅ Default

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💰 Cost Estimation

Operation	Estimated Cost
Single contract analysis	~$0.02-0.05
Contract comparison	~$0.04-0.08
Cloudflare Workers	Free (100K req/day)

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🤝 Contributing

Contributions are welcome! See CONTRIBUTING.md for guidelines.

Areas for Contribution

• Add more jurisdiction knowledge (UK, Japan, etc.)
• Support more contract types
• Improve Chinese contract recognition
• Add PDF upload to demo page
• Implement caching with Cloudflare KV

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📄 License

MIT License - see LICENSE for details.

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🔗 Links

• Live Demo
• Claude Skills Documentation
• MCP Protocol Specification
• Cloudflare Workers

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Built with ❤️ using Claude + Cloudflare Workers