EAN Check barcode tools

Working Security A

com.eancheck/barcode-toolsv1.0.0 Domain verified

GS1 check digits, code identification, UPC-E and ISBN conversion, GTIN repair and barcodes.

Utilities

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Registry entry

Open in the registry

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-11-07T11:02:44.575493Z",
      "publishedAt": "2026-11-07T11:02:44.575493Z",
      "statusChangedAt": "2026-11-07T11:02:44.575493Z"
    }
  },
  "server": {
    "name": "com.eancheck/barcode-tools",
    "icons": [
      {
        "src": "https://eancheck.com/images/logo.png",
        "sizes": [
          "512x512"
        ],
        "mimeType": "image/png"
      }
    ],
    "title": "EAN Check barcode tools",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://eancheck.com/api/mcp",
        "type": "streamable-http"
      }
    ],
    "version": "1.0.0",
    "websiteUrl": "https://eancheck.com",
    "description": "GS1 check digits, code identification, UPC-E and ISBN conversion, GTIN repair and barcodes."
  }
}

Maintained by@xoocode(verified)Also a maintainer?

Try it

Call this server's tools from your browser. Nothing to install.

https://eancheck.com/api/mcp

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

barcode_size Read-only

Give the printed size of a barcode type at a GS1 magnification (retail and carton types) or an X-dimension, with the GS1 allowed range.

typestring, required

Barcode type

x_mmnumber

Other types: narrowest bar width in mm

magnificationnumber

GS1 types: size in percent

Install

Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.

One click: Add to Cursor Add to VS Code Add to LM Studio Add to Goose

Run in a terminal

claude mcp add --transport http barcode-tools https://eancheck.com/api/mcp

Tools (10)

barcode_size

Give the printed size of a barcode type at a GS1 magnification (retail and carton types) or an X-dimension, with the GS1 allowed range.

read-only

Argument	Type	Description
type*	string	Barcode type
x_mm	number	Other types: narrowest bar width in mm
magnification	number	GS1 types: size in percent

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "type"
  ],
  "properties": {
    "type": {
      "enum": [
        "upc-a",
        "ean-13",
        "ean-8",
        "itf-14",
        "code-128",
        "code-39",
        "code-93",
        "interleaved-2-of-5",
        "codabar",
        "msi",
        "pharmacode",
        "data-matrix",
        "pdf417",
        "aztec"
      ],
      "type": "string",
      "description": "Barcode type"
    },
    "x_mm": {
      "type": "number",
      "description": "Other types: narrowest bar width in mm"
    },
    "magnification": {
      "type": "number",
      "description": "GS1 types: size in percent"
    }
  },
  "additionalProperties": {}
}

calculate_check_digits

Add the GS1 check digit to GTIN numbers that are missing it (7, 11, 12 or 13 digits become GTIN-8, UPC-A, EAN-13 or GTIN-14). One number per line or comma separated.

read-only

Argument	Type	Description
codes*	string	Numbers without their check digit, one per line

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "codes"
  ],
  "properties": {
    "codes": {
      "type": "string",
      "description": "Numbers without their check digit, one per line"
    }
  },
  "additionalProperties": {}
}

check_amazon_code

Read the code from an Amazon sticker: tells an LPN (License Plate Number) from an FNSKU, ASIN, FBA box label, Amazon Logistics tracking number or UPC/EAN, and explains each part. It cannot look up which product a code belongs to.

read-only

Argument	Type	Description
code*	string	The code as printed on the sticker, e.g. LPN RR AB1234567

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "code"
  ],
  "properties": {
    "code": {
      "type": "string",
      "description": "The code as printed on the sticker, e.g. LPN RR AB1234567"
    }
  },
  "additionalProperties": {}
}

convert_isbn

Convert an ISBN-10 to ISBN-13 or back, with the check digit recalculated and the hyphenated form. ISBN-13 starting with 979 has no ISBN-10.

read-only

Argument	Type	Description
isbn*	string	An ISBN-10 or ISBN-13, with or without hyphens

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "isbn"
  ],
  "properties": {
    "isbn": {
      "type": "string",
      "description": "An ISBN-10 or ISBN-13, with or without hyphens"
    }
  },
  "additionalProperties": {}
}

convert_upc_e

Convert a UPC-E (6, 7 or 8 digits) to the full 12-digit UPC-A, or a UPC-A to UPC-E when one of the four GS1 zero-suppression rules fits. Checks the check digit.

read-only

Argument	Type	Description
code*	string	A UPC-E or a UPC-A, digits only

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "code"
  ],
  "properties": {
    "code": {
      "type": "string",
      "description": "A UPC-E or a UPC-A, digits only"
    }
  },
  "additionalProperties": {}
}

identify_code

Find out what kind of code a string is: GTIN, ISBN, ISSN, SSCC, GLN, GS1-128 data, GS1 Digital Link, VIN, IMEI, ASIN, Amazon LPN or FNSKU, with its check digit status.

read-only

Argument	Type	Description
code*	string	The code exactly as printed or scanned

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "code"
  ],
  "properties": {
    "code": {
      "type": "string",
      "description": "The code exactly as printed or scanned"
    }
  },
  "additionalProperties": {}
}

make_barcode

Draw a print-ready barcode and return it as SVG (or EPS) in millimetres, plus a link that opens it in the generator. Types: upc-a, ean-13, ean-8, itf-14, code-128, code-39, code-93, interleaved-2-of-5, codabar, msi, pharmacode, data-matrix, pdf417, aztec. GS1 retail types use magnification 80 to 200 (percent).

read-only

Argument	Type	Description
gs1	boolean	Data Matrix only: treat the value as GS1 data like (01)09506000134352(17)271231
type*	string	Barcode type
x_mm	number	Other types: narrowest bar or module width in mm
value*	string	The data. GTIN types accept the number without its check digit.
format	string	File format, default svg
magnification	number	GS1 types only: size in percent, 100 is the standard size

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "type",
    "value"
  ],
  "properties": {
    "gs1": {
      "type": "boolean",
      "description": "Data Matrix only: treat the value as GS1 data like (01)09506000134352(17)271231"
    },
    "type": {
      "enum": [
        "upc-a",
        "ean-13",
        "ean-8",
        "itf-14",
        "code-128",
        "code-39",
        "code-93",
        "interleaved-2-of-5",
        "codabar",
        "msi",
        "pharmacode",
        "data-matrix",
        "pdf417",
        "aztec"
      ],
      "type": "string",
      "description": "Barcode type"
    },
    "x_mm": {
      "type": "number",
      "description": "Other types: narrowest bar or module width in mm"
    },
    "value": {
      "type": "string",
      "description": "The data. GTIN types accept the number without its check digit."
    },
    "format": {
      "enum": [
        "svg",
        "eps"
      ],
      "type": "string",
      "description": "File format, default svg"
    },
    "magnification": {
      "type": "number",
      "description": "GS1 types only: size in percent, 100 is the standard size"
    }
  },
  "additionalProperties": {}
}

parse_gs1

Split GS1 data (GS1-128, GS1 DataMatrix, Digital Link) into its Application Identifiers, with the name of each AI and any format error.

read-only

Argument	Type	Description
data*	string	GS1 data such as (01)09506000134352(17)271231(10)ABC123, FNC1 form or a Digital Link URL

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "data"
  ],
  "properties": {
    "data": {
      "type": "string",
      "description": "GS1 data such as (01)09506000134352(17)271231(10)ABC123, FNC1 form or a Digital Link URL"
    }
  },
  "additionalProperties": {}
}

repair_gtin

Recover a GTIN with unreadable digits: mark each unknown digit with ? or * and get every number that passes the GS1 check digit.

read-only

Argument	Type	Description
code*	string	The GTIN with ? or * for each unknown digit, e.g. 59012341?3457

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "code"
  ],
  "properties": {
    "code": {
      "type": "string",
      "description": "The GTIN with ? or * for each unknown digit, e.g. 59012341?3457"
    }
  },
  "additionalProperties": {}
}

validate_gtins

Check complete GTIN, EAN, UPC and ITF-14 numbers: says for each one whether the check digit is right and which GTIN length it is.

read-only

Argument	Type	Description
codes*	string	Complete numbers, one per line or comma separated

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "codes"
  ],
  "properties": {
    "codes": {
      "type": "string",
      "description": "Complete numbers, one per line or comma separated"
    }
  },
  "additionalProperties": {}
}

Security checkA100/100

We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 7, 2026.

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