ssl-certcheck

Check SSL/TLS certificates for any hostname — expiry dates, issuer, SANs, protocol version, cipher suite. Use when asked to check if a certificate is valid, see when a cert expires, inspect TLS details, or audit HTTPS security. Alerts on expired or soon-to-expire certs. Zero dependencies — pure Python ssl/socket.

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Install skill "ssl-certcheck" with this command: npx skills add rogue-agent1/ssl-certcheck

certcheck 🔒

SSL/TLS certificate inspector with expiry alerts.

Commands

# Check one or more hosts
python3 scripts/certcheck.py github.com google.com openclaw.ai

# JSON output for scripting
python3 scripts/certcheck.py --json example.com

# Custom expiry warning threshold (default 30 days)
python3 scripts/certcheck.py --days 60 mysite.com

# Custom port
python3 scripts/certcheck.py -p 8443 internal.example.com

Output

  • ✅ Valid cert with >30 days remaining
  • ⚠️ Cert expiring within threshold
  • ❌ Expired or connection failed
  • Shows: CN, issuer, expiry date + days left, TLS version, cipher, SANs

Exit Codes

  • 0: All certs healthy
  • 1: One or more expired/expiring (useful for cron monitoring)

Source Transparency

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