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Zovo Barcode Maker

by theluckystrike · remote · no sign-in to list tools · v1.0.1 · published by GitHub user theluckystrike

EAN, UPC & Code 128 barcodes

Changes · 1
CompareRegistry entry

2 tools: 1 change things and 1 only read.

Scanned Oct 22, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http barcode-maker https://barcode-maker.zovo.one/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warngenerate_barcode

    The server marks "generate_barcode" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "generate_barcode" says "generate": a word for a change.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Changes things 1Claude Code: ask
  • generate_barcodeUse this when the user wants a barcode generator: a UPC or EAN-13 barcode for a product, a Code 128 barcode for a SKU or label, GS1-128 with (01) GTIN, (17) expiry and (10) lot, Co…1 finding

    Why it is in this group

    • The name "generate_barcode" says "generate": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "generate_barcode" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "generate_barcode" says "generate": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Use this when the user wants a barcode generator: a UPC or EAN-13 barcode for a product, a Code 128 barcode for a SKU or label, GS1-128 with (01) GTIN, (17) expiry and (10) lot, Code 39, an ITF-14 carton code, or a book ISBN barcode. Computes or verifies the check digit (explains a wrong one), applies GS1 quiet zones and sizes, and returns SVG and PNG download links plus calculated print dimensions. One barcode per request; Code 128 up to 80 characters, Code 39 up to 60 characters, and GS1-128 up to 48 data characters including separator FNC1 characters. Does not issue or register GS1 numbers (real UPC/EAN numbers must be licensed from GS1), does not scan images or look up products. Do not use for QR codes.

    Annotations the server declares

    • title: Generate barcode
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
Only reads 1Claude Code: allow
  • validate_barcode_numberUse this when the user asks whether a UPC, EAN, GTIN-8/12/13/14, SSCC, ISBN-10/13 or ISSN number is valid, what its check digit should be, or wants to convert ISBN-10 to ISBN-13, U…No findings

    Why it is in this group

    • The name "validate_barcode_number" says "validate": a word for reading.
    Description, as the server wrote it
    Use this when the user asks whether a UPC, EAN, GTIN-8/12/13/14, SSCC, ISBN-10/13 or ISSN number is valid, what its check digit should be, or wants to convert ISBN-10 to ISBN-13, UPC-E to UPC-A, or UPC-A to EAN-13/GTIN-14. Explains the check-digit arithmetic, gives the corrected number and the GS1 prefix meaning. Does not tell who owns a number, whether it is registered with GS1, or what product it is; does not look anything up online.

    Annotations the server declares

    • title: Validate barcode number
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http barcode-maker https://barcode-maker.zovo.one/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__barcode-maker__validate_barcode_number"
    ],
    "ask": [
      "mcp__barcode-maker__generate_barcode"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as barcode-maker. Review it before you use it.