# Validate a Luhn checksum

Verify a numeric string using the Luhn check-digit algorithm.

This intent maps to the canonical capability `luhn_validate`.

## Canonical page

https://agentbits.dev/tools/luhn-validate

## MCP

`luhn_validate`

## HTTP

`POST https://agentbits.dev/v1/luhn/validate`

## Pricing

Free