Loangent is a web application that helps users understand complex loan contracts by providing AI-powered summaries and explanations. The application allows users to upload loan agreements in PDF or Word format and receive a structured, easy-to-understand summary of key terms, risks, and conditions.

• File Upload: Supports PDF and Word document uploads (up to 10MB)
• AI-Powered Analysis: Uses OpenAI's GPT model to analyze loan agreements
• Structured Summary: Extracts and organizes key information including loan amount, interest rate, repayment terms, collateral, risks, and important clauses
• User-Friendly Interface: Clean, intuitive design with clear navigation
• Two-Page Layout: Landing page explaining the service and a dedicated analysis page
• Responsive Design: Works on desktop and mobile devices

• React 19.2.0
• TypeScript
• Vite
• OpenAI SDK
• pdf-parse
• mammoth (for Word documents)
• react-router-dom

• Node.js (version 18 or higher)
• npm or yarn
• OpenAI API key

1. Clone the repository:

2. Install dependencies:

   npm install

3. Create a .env file in the root directory and add your OpenAI API key:

   VITE_OPENAI_API_KEY=your_openai_api_key_here
   VITE_OPENAI_BASE_URL=https://api.openai.com/v1 or any other base URL
   VITE_OPENAI_MODEL=the_model_name
   

4. Start the development server:

   npm run dev

5. Open your browser and navigate to http://localhost:5173

1. Visit the landing page to learn about the service
2. Click the "Analyze Your Contract" button
3. Upload a loan agreement in PDF or Word format
4. Wait for the AI to analyze the document
5. Review the structured summary of key terms and conditions

src/
├── components/           # React components
│   ├── LandingPage.tsx   # Landing page component
│   ├── ContractAnalyzer.tsx # Main analyzer component
│   ├── FileUpload.tsx    # File upload component
│   └── ContractSummaryDisplay.tsx # Summary display component
├── services/             # API and business logic
│   └── contractService.ts # OpenAI integration
├── utils/                # Utility functions
│   └── fileUtils.ts      # File processing utilities
├── types/                # TypeScript type definitions
│   └── contract.ts       # Contract summary types
├── App.tsx               # Main application component
└── App.css               # Global styles

• VITE_OPENAI_API_KEY: Your OpenAI API key (required)
• VITE_OPENAI_BASE_URL: OpenAI API base URL (defaults to https://api.openai.com/v1)
• VITE_OPENAI_MODEL: The model to use for analysis (required)

The application uses OpenAI's GPT model to analyze loan agreements. The analysis extracts key information including:

• Contract title and parties involved
• Loan amount and interest rate
• Repayment terms and schedule
• Collateral information
• Key risks and important clauses
• Penalties and early termination conditions
• Governing law and dispute resolution

The application supports both PDF and Word documents:

• PDF files are processed using the pdf-parse library
• Word documents (.docx) are processed using the mammoth library
• File size is limited to 10MB
• All file validation happens client-side

• API keys are stored in environment variables and never committed to the repository
• The .env file is included in .gitignore
• All file processing happens client-side for privacy

This project is licensed under the MIT License - see the LICENSE file for details.

This tool provides a summary based on AI analysis. Always consult with a legal professional before signing any contract.