add create-rag-app docs

Author: mrlynn

mongodb-rag-docs/docs/create-rag-app.md

@@ -0,0 +1,90 @@
+---
+id: create-rag-app
+title: Creating a RAG Application
+sidebar_label: Create RAG App
+---
+
+# Creating a MongoDB RAG Application
+
+The MongoDB RAG CLI provides a powerful `create-rag-app` command that helps you quickly scaffold a complete RAG (Retrieval Augmented Generation) application with both frontend and backend components.
+
+![MongoDB RAG Application Interface](/img/rag-app-screenshot.png)
+
+## Quick Start
+
+This command creates a new directory `my-rag-app` with a fully configured RAG application.
+
+## Project Structure
+
+The generated application includes:
+
+## Setup
+
+1. Navigate to your project directory:
+   ```bash
+   cd my-rag-app
+   ```
+
+2. Configure your environment variables in `backend/.env`:
+   ```bash
+   MONGODB_URI=your_mongodb_uri
+   OPENAI_API_KEY=your_openai_key
+   ```
+
+3. Install dependencies and start the application:
+   ```bash
+   # Install backend dependencies
+   cd backend && npm install
+   
+   # Install frontend dependencies
+   cd ../frontend && npm install
+   
+   # Start both frontend and backend (from root directory)
+   npm run dev
+   ```
+
+## Features
+
+### Backend
+- Express.js server with MongoDB integration
+- Pre-configured RAG endpoints
+- Document processing and vector storage
+- Streaming chat responses
+- Error handling middleware
+
+### Frontend
+- Modern React UI with Material-UI
+- Interactive chat interface
+- Document upload and management
+- Real-time search results
+- Mobile-responsive design
+
+## API Endpoints
+
+The backend exposes these REST API endpoints:
+
+- `POST /api/documents` - Upload and process documents
+- `POST /api/chat` - Send questions and receive AI-generated responses
+- `GET /api/search` - Perform vector similarity search
+- `GET /api/documents` - Retrieve processed documents
+
+## Customization
+
+You can customize the application by:
+
+- Adjusting vector search parameters in `backend/src/config/ragConfig.js`
+- Modifying UI components in the frontend
+- Adding authentication and authorization
+- Implementing domain-specific features
+
+![RAG App Architecture](/img/rag-app-architecture.png)
+
+## Next Steps
+
+1. Deploy your application
+2. Add your documents to the system
+3. Customize the UI to match your brand
+4. Implement user authentication
+5. Add features specific to your use case
+
+For more detailed information about MongoDB RAG, visit the [main documentation](./README.md).

mongodb-rag-docs/sidebars.js

@@ -13,6 +13,7 @@ module.exports = {
             'examples/advanced-example',
           ],
         },
+        'create-rag-app',
         'api-reference',
       ],
   };