An open-source React application that analyzes cybersecurity articles and generates interactive attack flow visualizations using the MITRE ATT&CK framework.

• 🔍 Article Analysis: Extract attack patterns from cybersecurity articles and reports
• 📊 Interactive Visualization: Generate dynamic attack flow diagrams with real-time streaming
• 🎯 MITRE ATT&CK Integration: Map techniques and tactics to the ATT&CK framework
• 🖼️ Image Analysis: Process screenshots and diagrams from articles
• 📤 Multiple Export Formats: Export as PNG, STIX 2.1 bundles, or Attack Flow Builder (.afb) files
• ⚡ Real-time Streaming: Watch attack flows build in real-time as Claude analyzes content
• 🎬 Story Mode: Cinematic playback of attack progression with customizable controls
• 💾 Save & Load: Persistent storage of analyses with metadata and search capabilities
• ⚙️ Configurable: Server-side configuration via environment variables
• 🛡️ Defensive Focus: Built for security analysts and threat hunters
• 🔒 Secure Architecture: Server-side API processing with SSRF protection

• Node.js (v18 or higher)
• npm or yarn
• Anthropic API key (get one here)

1. Clone the repository

   git clone https://github.com/davidljohnson/flowviz.git
   cd flowviz

2. Install dependencies

   npm install

3. Configure environment (Required for server-side API calls)

   cp .env.example .env
   # Edit .env and add your Anthropic API key

4. Start the application

   npm run dev:full

   This starts both the frontend (http://localhost:5173) and backend proxy (http://localhost:3001)

1. Visit console.anthropic.com
2. Sign in or create an account
3. Go to API Keys and create a new key
4. Copy the key (starts with "sk-ant-")
5. Add it to your .env file as ANTHROPIC_API_KEY

💡 Note: Your API key is used server-side only for better security. It's never exposed to the client.

1. Analyze Content:

   • URL Mode: Paste a cybersecurity article URL and click "Analyze Article"
   • Text Mode: Paste article text directly for analysis

2. Watch Real-time Streaming: Attack flow nodes and connections appear as Claude processes the content

3. Interactive Exploration:

   • Click nodes to see detailed information with MITRE ATT&CK mappings
   • Zoom, pan, and drag nodes around the canvas
   • Use Story Mode to watch attack progression cinematically

4. Save & Export:

   • Save analyses with custom titles and descriptions
   • Export as PNG images, STIX 2.1 bundles, or AFB files for Attack Flow Builder
   • Load previously saved analyses

5. Customize Experience:

   • Toggle cinematic mode for story playback
   • Configure visualization preferences
   • Adjust server settings via environment variables

The application includes comprehensive error handling with:

• Network Errors: Connection issues, timeouts, and CORS problems
• API Errors: Rate limiting, authentication, and quota issues
• Validation Errors: Invalid URLs, empty content, and format issues
• Recovery Options: Retry buttons and helpful suggestions

• "Please set your Anthropic API key": Ensure ANTHROPIC_API_KEY is set in your .env file
• "Network Connection Failed": Check your internet connection
• "Authentication Error": Verify your API key is correct in .env file
• "Rate Limit Exceeded": Wait a moment and try again
• "API Quota Exceeded": Check your Anthropic account billing
• "Invalid URL": Ensure the URL starts with http:// or https://

• React 18 with TypeScript
• Material-UI for components
• React Query for data fetching
• React Flow for visualization
• Vite for build tooling

• Express.js server with secure architecture
• Server-side API calls - All Anthropic API calls happen server-side
• Security features - Rate limiting, SSRF protection, request validation
• CORS handling with configurable origins
• Error handling and comprehensive logging

• Article Parser: Extracts content from URLs
• Claude Service: AI-powered attack flow analysis
• Flow Visualization: Generates interactive diagrams

• npm run dev:full - Recommended: Start both frontend and backend together
• npm run dev - Start frontend only (http://localhost:5173)
• npm run server - Start backend proxy only (http://localhost:3001)
• npm run build - Build for production with TypeScript validation and optimizations
• npm run preview - Preview production build
• npm run lint - Run ESLint with TypeScript support

• Console Statement Removal: All console.log, console.debug, and console.info statements are automatically removed in production builds
• Bundle Optimization: Code splitting and vendor chunk optimization for faster loading
• TypeScript Validation: Full type checking during build process

flow-viz/
├── src/
│   ├── components/          # React components
│   │   ├── FlowVisualization/  # Main visualization components
│   │   ├── SavedFlows/         # Save/Load dialog system
│   │   └── ErrorBoundary/      # Error handling
│   ├── services/           # API and parsing services
│   │   ├── claude/            # Claude AI integration
│   │   ├── article/           # Content extraction
│   │   └── export/            # File export utilities
│   ├── types/              # TypeScript type definitions
│   └── App.tsx             # Main application
├── server.js               # Express proxy server with security features
├── security-utils.js       # Shared security utilities (SSRF protection, rate limiting)
├── .env.example            # Environment configuration template
├── vite.config.ts          # Vite configuration
└── package.json            # Dependencies and scripts

1. Create components in src/components/ following existing patterns
2. Add services in src/services/ with proper error handling
3. Define TypeScript types in src/types/
4. Follow the existing glassmorphism design system
5. Update error handling and user feedback
6. Test with various article types and formats

Required:

ANTHROPIC_API_KEY=your_api_key_here  # Required for server-side Claude API calls

Optional (with defaults):

# Server Configuration
PORT=3001                    # Server port (default: 3001)
NODE_ENV=development         # Environment: development | production

# Security - Rate Limiting
RATE_LIMIT_ARTICLES=10       # Max article fetches per 15 min (default: 10)
RATE_LIMIT_IMAGES=50         # Max image fetches per 10 min (default: 50)
RATE_LIMIT_STREAMING=5       # Max AI requests per 5 min (default: 5)

# Security - Size Limits  
MAX_REQUEST_SIZE=10mb        # Max request body size (default: 10mb)
MAX_ARTICLE_SIZE=5242880     # Max article size in bytes (default: 5MB)
MAX_IMAGE_SIZE=3145728       # Max image size in bytes (default: 3MB)

# CORS Configuration
ALLOWED_ORIGINS=http://localhost:5173,http://localhost:3000  # Comma-separated

See .env.example for a complete template with documentation.

If you encounter CORS errors:

1. Ensure the proxy server is running (npm run server)
2. Check that requests are going through /api proxy
3. Verify the target URL is accessible

If the API key isn't working:

1. Check your .env file has ANTHROPIC_API_KEY set correctly
2. Verify the key starts with "sk-ant-" and has no extra spaces
3. Restart the server after updating .env: npm run dev:full
4. Verify the key is valid in the Anthropic Console
5. Ensure your Anthropic account has available credits

If the build fails:

1. Clear node_modules: rm -rf node_modules && npm install
2. Check TypeScript errors: npm run lint
3. Verify all dependencies are installed

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests if applicable
5. Submit a pull request

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

For issues and questions:

1. Check the troubleshooting section
2. Review error messages for specific guidance
3. Open an issue on GitHub with detailed information