💡 TIL: You can check ANY website's SSL certificate expiry from the command line: echo | openssl s_client -connect example.com:443 2>/dev/null | openssl x509 -noout -dates But if you need to monitor multiple domains, here's a free API that does it: GET http://5.78.129.127:3456/api/ssl-check?domain=example.com Returns: issuer, valid dates, days until expiry, certificate chain. No auth needed. Use it in your CI/CD to catch expiring certs before they break prod. 🔒 #devtips #ssl #security #webdev