MCP For Claude Marketplace
Luhn Credit Card Validator

Luhn Credit Card Validator MCP Connector for Claude

A+

Validates credit card numbers using the Luhn algorithm and identifies the issuer.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner
More Details Connect to Claude

This MCP server provides tools to verify the mathematical validity of credit card numbers using the Luhn mod-10 algorithm. It can identify card issuers such as Visa, Mastercard, and American Express by analyzing digit patterns and lengths. Use validate_card_number for a full check of validity and issuer, identify_issuer_only to find the network without a checksum, or get_issuer_rules to see the specific prefix and length requirements for a known issuer.

luhncredit-cardvalidationfinancechecksum

3 tools expose this connector's capabilities to your AI agent.

get_issuer_rules

Answers what the specific length and prefix requirements are for recognized card issuers

identify_issuer_only

Answers what specific card network a number belongs to without performing the full Luhn mathematical validation

validate_card_number

Answers whether a specific credit card number is mathematically valid and which issuer it belongs to

See how to talk to your AI agent using Luhn Credit Card Validator.

Is the credit card number 4539 1234 5678 9012 valid?

Yes, the card number is a valid Visa card.

What issuer is card number 3712 345678 90123?

That card number belongs to American Express.

Check if 5105 1051 0510 5105 is a valid Mastercard.

No, that number is not a valid Mastercard.

The server uses the Luhn mod-10 algorithm to perform a checksum on the digits, ensuring the number is mathematically consistent with standard credit card formats.

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