{"service":"x402 Luhn Validator","protocol":"x402 (Base/USDC)","version":"1.0.0","price":"0.0005 USDC/appel","endpoints":["POST /validate","POST /generate","POST /complete"],"docs":"/docs","tagline":"Validate credit card numbers with Luhn algorithm — instant check","curl_example":"curl https://x402-luhn.suretat.com/check -H 'Content-Type: application/json' -d '{\"number\": \"4532015112830366\"}'","try_it":"https://x402-luhn.suretat.com/docs"}