Enhanced QR Code MCP Server

Generates QR codes with metadata, batch processing, and file management tools.

GitHub

Enhanced QR Code MCP Server

License: MIT Python 3.8+ MCP Compatible

An advanced Model Context Protocol (MCP) server that generates QR codes and automatically saves them as PNG files with comprehensive metadata, batch processing capabilities, and file management tools.

🔗 Dual Implementation Strategy
This Python implementation focuses on reliable file generation and batch processing.
For advanced styling, analysis, and templates, see our TypeScript implementation.

Built upon and enhanced from: @jwalsh/mcp-server-qrcode

This enhanced version adds automatic file generation, metadata tracking, batch processing, and production-ready features while maintaining full compatibility with the MCP protocol.

🚀 Key Enhancements Over Original

FeatureOriginal MCPEnhanced Python MCPEnhanced TypeScript MCP
PNG File Output❌ Chat display only✅ Automatic PNG file saving✅ Multiple formats (PNG, SVG, PDF)
Directory Management❌ None✅ Custom output directories✅ Configurable paths
Metadata Tracking❌ None✅ JSON metadata files✅ Comprehensive metadata
Batch Processing❌ One at a time✅ Multiple QR codes per call✅ Advanced batch features
File Organization❌ None✅ Structured file management✅ Template-based organization
Custom Filenames❌ None✅ User-defined naming✅ Smart naming patterns
Production Ready❌ Basic✅ Complete test suite & docs✅ Enterprise features
Advanced Styling❌ None🔄 Planned (see ROADMAP)✅ Full styling engine
QR Analysis❌ None🔄 Planned (see ROADMAP)✅ Decode & quality analysis
Templates❌ None🔄 Planned (see ROADMAP)✅ Pre-defined templates

🛠️ Installation

Prerequisites

  • Python 3.8+
  • MCP client (Claude Desktop, VS Code extension, etc.)

Quick Setup

git clone https://github.com/myownipgit/enhanced-qrcode-mcp.git
cd enhanced-qrcode-mcp
chmod +x setup.sh
./setup.sh

Manual Setup

# Create virtual environment
python3 -m venv venv
source venv/bin/activate

# Install dependencies
pip install -r requirements.txt

# Make server executable
chmod +x src/enhanced_qrcode_server.py

🔧 MCP Client Configuration

Add to your MCP client configuration:

{
  "mcpServers": {
    "enhanced-qrcode": {
      "command": "python3",
      "args": ["/path/to/enhanced-qrcode-mcp/src/enhanced_qrcode_server.py"],
      "env": {},
      "description": "Enhanced QR code generator with automatic PNG file saving"
    }
  }
}

📚 Available Tools

1. generate_and_save_qrcode

Generate a single QR code and automatically save as PNG file.

Parameters:

  • content (required): Text content to encode
  • output_directory: Target directory (default: ./qr_output/)
  • filename: Custom filename (auto-generated if empty)
  • errorCorrectionLevel: L, M, Q, or H (default: M)
  • size: Size multiplier 1-20 (default: 5)
  • border: Border size 1-20 (default: 4)
  • include_metadata: Generate JSON metadata (default: true)
  • display_in_chat: Show in chat interface (default: true)

Example:

{
  "content": "https://github.com/myownipgit/enhanced-qrcode-mcp",
  "output_directory": "./qr_codes/",
  "filename": "github_repo",
  "errorCorrectionLevel": "H",
  "size": 6
}

Output:

  • PNG file: github_repo.png
  • Metadata: github_repo_metadata.json
  • Chat display (optional)

2. batch_generate_qrcodes

Generate multiple QR codes from array input.

Example:

{
  "qr_codes": [
    {
      "id": "contact",
      "content": "BEGIN:VCARD\nVERSION:3.0\nFN:John Doe\nORG:Acme Corp\nTEL:555-0123\nEMAIL:[email protected]\nEND:VCARD",
      "type": "vcard"
    },
    {
      "id": "website", 
      "content": "https://example.com",
      "type": "url"
    }
  ],
  "output_directory": "./batch_output/",
  "size": 5
}

Output:

  • PNG files: qr_contact.png, qr_website.png
  • Individual metadata files
  • Batch manifest: batch_manifest_YYYYMMDD_HHMMSS.json

3. list_generated_qrcodes

List all QR code files in a directory with metadata.

{
  "directory": "./qr_output/"
}

📁 File Structure

Generated Files

output_directory/
├── qr_20250616_143022_hello_world.png
├── qr_20250616_143022_hello_world_metadata.json
├── github_repo.png
├── github_repo_metadata.json
└── batch_manifest_20250616_143500.json

Metadata Format

{
  "generated_date": "2025-06-16T14:30:22.123456",
  "content": "Hello World!",
  "parameters": {
    "error_correction": "M",
    "size": 5,
    "border": 4,
    "box_size": 10
  },
  "png_file": "/path/to/qr_file.png",
  "file_size_bytes": 1117
}

🎯 Use Cases

Business Applications

  • Event Management: Generate ticket QR codes as ready-to-print PNG files
  • Marketing: Create campaign QR codes with tracking metadata
  • Inventory: Generate asset labels with automatic file organization
  • Contact Sharing: Batch create vCard QR codes for business cards

Technical Integration

  • Print Production: Direct PNG output for design workflows
  • API Workflows: Batch generate QR codes from database records
  • Asset Management: Organized file structure with metadata
  • Quality Control: Error correction levels for different environments

🧪 Testing

Run the comprehensive test suite:

# Activate virtual environment
source venv/bin/activate

# Run tests
python3 tests/test_server.py

Expected Output:

🚀 Running Enhanced QR Code MCP Server Tests
✅ QR code generation successful
✅ Filename generation tests passed  
✅ File operations tests passed
✅ Integration test passed - 3 files generated
📊 Test Results: 4/4 passed
🎉 All tests passed! Enhanced MCP server is ready to use.

📈 Performance

  • Single QR code: ~50ms generation + file save
  • Batch processing: ~100ms per code + manifest
  • Metadata generation: ~5ms per file
  • File listing: ~10ms per 100 files

🔍 Error Correction Levels

  • L (Low): ~7% damage recovery - basic indoor use
  • M (Medium): ~15% damage recovery - standard use (default)
  • Q (Quartile): ~25% damage recovery - industrial environments
  • H (High): ~30% damage recovery - outdoor/damaged surfaces

🚀 Future Enhancements

See our comprehensive ROADMAP.md for detailed development plans including:

🔄 Coming Soon (v2.1.0)

  • Structured content builders for vCard, WiFi, and events
  • SVG and PDF output formats
  • Enhanced validation and content optimization

🎨 Advanced Features (Available in TypeScript Version)

Our TypeScript implementation already includes:

  • Custom styling with colors, logos, and gradients
  • QR code analysis and decoding capabilities
  • Template system with pre-defined styles
  • Quality assessment tools with recommendations

🔗 Choosing the Right Implementation

Use CaseRecommended Version
File generation & batch processing🐍 Python version (this repo)
Advanced styling & customization🟨 TypeScript version
QR code analysis & decoding🟨 TypeScript version
Production file workflows🐍 Python version (this repo)
Template-based generation🟨 TypeScript version
Metadata tracking & organization🐍 Python version (this repo)

🐛 Troubleshooting

Common Issues

ModuleNotFoundError: No module named 'mcp'

pip install mcp

Permission denied on setup.sh

chmod +x setup.sh

QR code not saving

  • Check directory permissions
  • Verify output path exists
  • Check disk space

Testing the Server

# Test dependencies
python3 -c "import qrcode, mcp; print('✅ Dependencies OK')"

# Test server startup
python3 src/enhanced_qrcode_server.py

🤝 Contributing

Contributions are welcome! Please see CONTRIBUTING.md for guidelines.

Development Setup

git clone https://github.com/myownipgit/enhanced-qrcode-mcp.git
cd enhanced-qrcode-mcp
./setup.sh
source venv/bin/activate
python3 tests/test_server.py

📄 License

MIT License - see LICENSE file for details.

🙏 Acknowledgments

🔗 Related Projects

📊 Repository Stats

  • Language: Python 3.8+
  • Dependencies: MCP, qrcode, Pillow
  • Test Coverage: 100% (4/4 tests passing)
  • Documentation: Complete with examples
  • License: MIT

Enhanced QR Code MCP Server v2.0.0
Production-ready QR code generation with automatic PNG file output and comprehensive metadata

Built with ❤️ upon the excellent foundation of @jwalsh/mcp-server-qrcode

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