Barcode Tools (decode, render, GTIN validate)
Decode, render, validate barcodes: QR, DataMatrix, EAN, UPC, PDF417. All tools free, no auth.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"barcode": {
"url": "https://mcp.casuyi.com/mcp"
}
}
}Remote endpoints
https://mcp.casuyi.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (4)
⚪decode_barcode(image_base64, formats)
Detect 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 results.
Input Schema
{
"type": "object",
"properties": {
"image_base64": {
"type": "string",
"description": "Base64-encoded image file bytes (no data: URI prefix)"
},
"formats": {
"description": "Optional canonical format ids to keep, e.g. [\"qr\",\"ean13\"]",
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"image_base64"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢render_barcode(text, format, scale)
Render text as a barcode PNG. format: one of qr, aztec, datamatrix, code128, code39, code93, ean13, ean8, upca, itf, pdf417. Output: base64 PNG plus 'decoded' self-check flag (we decode our own render; upca intentionally verifies as zero-padded EAN-13). GTIN codes must have a valid mod-10 checksum.
Input Schema
{
"type": "object",
"properties": {
"text": {
"type": "string",
"description": "Payload to encode (digits for GTIN symbologies)"
},
"format": {
"type": "string",
"description": "Symbology id: qr, aztec, datamatrix, code128, code39, code93, ean13, ean8, upca, itf, pdf417"
},
"scale": {
"description": "Rasterization scale, default 6",
"type": "integer",
"minimum": 2,
"maximum": 12
}
},
"required": [
"text",
"format"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢validate_gtin(code)
Check 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).
Input Schema
{
"type": "object",
"properties": {
"code": {
"type": "string",
"description": "Candidate product code, digits only"
}
},
"required": [
"code"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢list_formats
Static table of supported barcode formats with render/decode support and notes.
Input Schema
{
"type": "object",
"properties": {},
"$schema": "https://json-schema.org/draft/2020-12/schema"
}Community
Evidence