Barcode Tools (decode, render, GTIN validate)
Decode, render, validate barcodes: QR, DataMatrix, EAN, UPC, PDF417. All tools free, no auth.
Connect Remote server
claude mcp add --transport http barcode https://mcp.casuyi.com/mcp
{
"mcpServers": {
"barcode": {
"url": "https://mcp.casuyi.com/mcp"
}
}
}
{
"servers": {
"barcode": {
"type": "http",
"url": "https://mcp.casuyi.com/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://mcp.casuyi.com/mcp
Tools 4 found in our last check
decode_barcodeDetect and decode all barcodes in an image. Input: base64-encoded image bytes (PNG/JPEG/WebP/anything sharp reads). Output: JSON array of {format, text}. Supports QR, Aztec, DataMatrix, Code128/39/93, EAN-13/8, UPC-A/E, ITF, PDF417, Codabar. Use formats filter to restrict result…
render_barcodeRender text as a barcode PNG. format: one of qr, aztec, datamatrix, code128, code39, code93, ean13, ean8, upca, itf, pdf417. Output: base64 PNG plus 'decoded' self-check flag (we decode our own render; upca intentionally verifies as zero-padded EAN-13). GTIN codes must have a va…
validate_gtinCheck a product code against GTIN rules: length + mod-10 checksum. Returns {valid, type: ean13|ean8|upcA|null, normalized}. Rejects codes with a broken checksum (e.g. 8595234703191).
list_formatsStatic table of supported barcode formats with render/decode support and notes.
Details
| Endpoint | https://mcp.casuyi.com/mcp (Streamable HTTP) |
| First published | 16 Sep 2026 |
| Last updated | 16 Sep 2026 |
| Registry name | io.github.appvantagelabs2-a11y/barcode |
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