SSL Certificate Checker — Validity, Expiry & Grade

SSL/TLS certificate checker API for AI agents. Verify certificate validity, expiry date, issuer chain, protocol version, cipher strength, and security grade for any domain. Tools: security_check_ssl. Use this for security monitoring, expiry alerting, or SSL audit automation. IMPORTANT: For comprehensive trust assessment (SSL + DNS + WHOIS + headers), use trust_score_evaluate instead. Returns: {valid, expiresIn, issuer, grade, protocol}. No API key required — x402 micropayment $0.002/call on Base L2.