Barcode Tools (decode, render, GTIN validate) MCP Server

by appvantagelabs2-a11y Your server? Claim it

answering

Barcode Tools (decode, render, GTIN validate) is answering right now. Last checked 6 min ago. It exposes 4 tools.

Decode, render, validate barcodes: QR, DataMatrix, EAN, UPC, PDF417. All tools free, no auth.

Uptime history 48 days of history · worst day 82%

48 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

214 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 5

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 16 September 2026. No other catalogue keeps this.

16 Sep 4 tools changed the parameters they ask for decode_barcode, list_formats, render_barcode and 1 more

16 Sep a tool changed version

Nothing serious here today

Today is the operative word: we check Barcode Tools (decode, render, GTIN validate) every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add barcode --transport http https://mcp.casuyi.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://mcp.casuyi.com/mcp

~/.codex/config.toml

[mcp_servers.barcode]
url = "https://mcp.casuyi.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "barcode": {
      "url": "https://mcp.casuyi.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "barcode": {
      "type": "http",
      "url": "https://mcp.casuyi.com/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

decode

decode_barcode

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.

formats

list_formats

Static table of supported barcode formats with render/decode support and notes.

render

render_barcode

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.

validate

validate_gtin

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).

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.casuyi.com/mcp	streamable-http	answering	205 ms	6 min ago

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Barcode Tools (decode, render, GTIN validate) — questions

Answers built from our own checks of this server.

What can Barcode Tools (decode, render, GTIN validate) do?

It exposes 4 tools, read directly from the server on our last check. Among them: decode_barcode, list_formats, render_barcode, validate_gtin. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Barcode Tools (decode, render, GTIN validate) working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 214 ms. The bar chart above shows every period we have measured.

How do I connect Barcode Tools (decode, render, GTIN validate)?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Barcode Tools (decode, render, GTIN validate) need an API key?

No. Barcode Tools (decode, render, GTIN validate) completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Barcode Tools (decode, render, GTIN validate)?

It answers our handshake in 214 ms on average, which is faster than 67% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.