Servers Playground How we check Add a server Log in

Checksum Validator

Working · 1.9 s

com.apished/checksum-validatorv1.0.0 Domain verified

Validates Luhn, IBAN, ISBN, EAN/UPC, SWIFT/BIC, and EU VAT checksums and formats.

Utilities

Website Registry entry

Maintain this server? Claim it

Try it

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

https://apished.com/mcp/v1/checksum

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.

ean_validate

Validates an 8-digit (EAN-8), 12-digit (UPC-A), 13-digit (EAN-13), or 14-digit (GTIN-14) barcode checksum: alternating weights 1 3 applied right-to-left, check digit is (10 - sum mod 10) mod 10.

valuestring, required

identifier or value to check

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

I understand, run it anyway

Tools (6)

Checksum Validator MCP server | mcptry

Argument	Type	Description
value*	string	identifier or value to check

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value"
  ],
  "properties": {
    "value": {
      "type": "string",
      "description": "identifier or value to check"
    }
  },
  "additionalProperties": false
}

iban_validate

Validates an IBAN's length for its issuing country (per the SWIFT IBAN registry) and its mod-97 checksum. Does not decompose the BBAN into a bank code/account number or resolve a BIC.

Argument	Type	Description
value*	string	identifier or value to check

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value"
  ],
  "properties": {
    "value": {
      "type": "string",
      "description": "identifier or value to check"
    }
  },
  "additionalProperties": false
}

isbn_validate

Validates a 10- or 13-character ISBN. ISBN-10 uses weights 10..1 over 10 characters (last may be X, worth 10), sum mod 11 must be 0. ISBN-13 uses the same GTIN checksum as barcodes.

Argument	Type	Description
value*	string	identifier or value to check

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value"
  ],
  "properties": {
    "value": {
      "type": "string",
      "description": "identifier or value to check"
    }
  },
  "additionalProperties": false
}

luhn_validate

Validates a numeric string against the Luhn (mod-10) checksum — payment card numbers, IMEI numbers, and similar identifiers.

Argument	Type	Description
value*	string	identifier or value to check

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value"
  ],
  "properties": {
    "value": {
      "type": "string",
      "description": "identifier or value to check"
    }
  },
  "additionalProperties": false
}

swiftbic_validate

Structural format validation only for a SWIFT/BIC code: 8 or 11 characters (4 letters bank code + 2 letters country code + 2 alphanumeric location code + optional 3 alphanumeric branch code). The country code is not cross-checked against ISO 3166-1.

Argument	Type	Description
value*	string	identifier or value to check

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value"
  ],
  "properties": {
    "value": {
      "type": "string",
      "description": "identifier or value to check"
    }
  },
  "additionalProperties": false
}

vateu_validate

Format validation only (no VIES lookup) for an EU VAT number: checks the 2-letter member-state prefix (EL for Greece, XI for Northern Ireland) against that country's digit/letter pattern. A format-valid result does not mean the number is actually registered.

Argument	Type	Description
value*	string	identifier or value to check

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value"
  ],
  "properties": {
    "value": {
      "type": "string",
      "description": "identifier or value to check"
    }
  },
  "additionalProperties": false
}