barcode-scanner-mcp

MCP server for scanning and generating barcodes and QR codes.

Use Cases

Decode a barcode from a photo: "What does this barcode say?" → reads the image, detects the barcode format, and returns the decoded text.

Generate a QR code: "Create a QR code for https://example.com" → generates a PNG QR code image with configurable error correction.

Create shipping labels: "Generate a Code 128 barcode for tracking number 1Z999AA10123456784" → produces a barcode image in the specified format.

Verify printed barcodes: "Scan this product barcode and look up the item" → decodes the barcode and returns the text for further lookup.

Setup

claude mcp add barcode-scanner-mcp -- npx -y barcode-scanner-mcp

Or with HTTP transport:

# Start the server
MCP_TRANSPORT=http PORT=3000 npx -y barcode-scanner-mcp

# Add to Claude
claude mcp add --transport http barcode-scanner-mcp http://localhost:3000/mcp

Tools

| Tool | Description | |------|-------------| | decode_image | Decode a barcode or QR code from an image file or base64 data | | generate_qr | Generate a QR code PNG from text or a URL | | generate_barcode | Generate a barcode PNG in 25+ formats (Code 128, EAN-13, UPC-A, etc.) |

Contributing

Pull requests are welcomed on GitHub! To get started:

1. Install Git and Node.js
2. Clone the repository
3. Install dependencies with npm install
4. Run npm run test to run tests
5. Build with npm run build

Releases

Versions follow the semantic versioning spec.

To release:

1. Use npm version <major | minor | patch> to bump the version
2. Run git push --follow-tags to push with tags
3. Wait for GitHub Actions to publish to the NPM registry.