ClauseGuard

🚨 Spot hidden risks before you click “I Agree.”

ClauseGuard is a Chrome extension that scans Terms & Conditions, Privacy Policies, and legal contracts to flag hidden risks that could impact your rights, finances, or privacy. With instant alerts and plain-language summaries, you’ll always know what you’re agreeing to — before you click “I agree.”

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✨ Why ClauseGuard?

• 🛡 Protect yourself from unfair terms and hidden fees
• ⚡ Save time with intelligent AI-powered risk detection
• 🧠 Understand legal jargon in plain English
• 📄 Stay informed and in control of every agreement

Sign smart. Stay protected. Every time.

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🚀 Quick Start

📽️ Demo Video

ClauseGuard.Demo.mp4

⬇️ Install from Chrome Web Store

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🔍 How It Works

1. Smart Popup → On signup, login, checkout, or account setup pages, ClauseGuard automatically displays an icon. Click it to instantly analyze all legal links (Terms, Privacy, Policies) on that page.
2. Scan Options → From the extension, you can:
   • Upload a contract for instant analysis
   • Paste or enter any link for review
   • Scan the current page with one click
3. Backend Magic → ClauseGuard sends the request to the backend (via the extension), where analysis happens.
4. Plain-Language Results → Risky clauses are flagged, explained in simple terms, and highlighted back in the extension.

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🏗️ Architecture

High-Level Flow

flowchart TD
    A[User Action in Extension] -->|Send Document/Link| B[FastAPI Backend]
    B -->|Link| C[Playwright Scraper]
    B -->|Document| D[Doc Processor]
    D -->|Chunking + Keyword Filtering| E[LLM Analyzer - LangChain + Gemini]
    C -->|Extracted Text Chunks| E
    E --> F[Risk Flags + Summaries]
    F --> G[Return Results to Extension]
    G --> H[Display to User]

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⚙️ Backend Architecture

• FastAPI → Lightweight, async API server
• Playwright → Scrapes and extracts text from URLs
• Document Processor → Handles uploaded contracts (max 10 MB), splits into chunks, keyword-filters, and routes only relevant sections for analysis
• LangChain + Gemini → LLM-powered analyzer that flags risks with custom prompts
• MongoDB → Stores cached results for links (24h) to optimize cost/performance
• Caching → Prevents re-analyzing the same link within 24 hours
• Privacy-first → No documents are permanently stored; everything is deleted immediately after analysis

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🖥️ Frontend Architecture

• Chrome Extension:

  • Auto-detects Terms & Privacy links on pages
  • Smart Popup icon shows up when relevant
  • Options to scan current page, upload documents, or paste links
  • Displays analysis results in a clean, user-friendly panel

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☁️ Infrastructure

• AWS EC2 → Hosts backend
• Docker + Docker Compose → Containerized deployment
• GitHub Actions → CI/CD pipeline for seamless updates
• AWS Application Load Balancer (ALB) → Balances traffic and provides HTTPS termination

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🛡️ Privacy & Security

• ❌ No data stored — all documents are deleted immediately after analysis
• ⏳ 24h cache only for links — saves compute costs without exposing sensitive info
• 🔒 User-first design — transparency and privacy are core principles

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🛠️ Tech Stack

• Frontend: Chrome Extension (JavaScript/HTML/CSS)
• Backend: FastAPI (Python)
• Scraping: Playwright
• LLM Framework: LangChain
• AI Model: Google Gemini
• Database: MongoDB (caching only)
• Infrastructure: AWS EC2, Docker, ALB, GitHub Actions

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🤝 Contributing

Got ideas or spotted something we can improve?
Open an issue or reach out — contributions and feedback are always welcome!

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⚖️ License

All rights reserved © 2025 ClauseGuard.