certcheck 🔒#

SSL/TLS certificate inspector with expiry alerts.

Commands#

bash

# 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)