NyayaSathi – AI Constitution

NyayaSathi is an AI-powered legal assistant platform that helps users upload, process, and analyze legal documents using advanced text extraction, chunking, and retrieval-augmented generation (RAG) techniques. The project consists of a modern React frontend and a robust Node.js backend.

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Features

• Upload and manage legal documents (PDF/DOCX)
• Extract and clean text (no OCR, in-memory only)
• Chunk text for RAG and vector search
• Semantic search and AI-powered Q&A
• User authentication and profile management
• Email notifications
• Modern, responsive UI

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Tech Stack

Frontend

• React (Vite, TypeScript)
• Tailwind CSS
• Redux (state management)
• Axios (API calls)
• Modern UI components

Backend

• Node.js (ESM, v22+)
• Express.js
• MongoDB & Mongoose
• AWS S3 (file storage)
• pdf-parse, mammoth (text extraction)
• Pinecone (vector DB)
• Google Gemini, LangChain (AI/LLM)
• Nodemailer (SMTP)

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Folder Structure

NyayaSathi---AI-constitution/
├── Backend/         # Node.js backend
│   ├── controllers/
│   ├── models/
│   ├── routes/
│   ├── services/
│   ├── middleware/
│   ├── DB/
│   ├── utils/
│   ├── workflows/
│   └── ...
├── Frontend/        # React frontend
│   ├── src/
│   ├── public/
│   ├── components/
│   ├── hooks/
│   ├── store/
│   ├── utils/
│   └── ...
└── README.md        # Project overview

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Setup Instructions

Backend

1. Navigate to Backend/
2. Install dependencies:

   npm install

3. Configure environment variables in .env (see .env.example)
4. Start the server:

   npm run dev

Frontend

1. Navigate to Frontend/
2. Install dependencies:

   npm install

3. Start the development server:

   npm run dev

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API Example

• POST /api/v1/rag/process/:documentId — Process a document and return text chunks for RAG.

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License

MIT