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SSL Certificate Checker

通过 OpenSSL 命令读取目标域名的 SSL/TLS 证书，展示有效期、主题和签发者，适用于 HTTPS 配置检查与到期监控；仅做只读检查，不安装证书或进行渗透测试。

leonardodpanda
leonardodpanda
热度 86.86
最近更新 2026-05-11 17:29:56
分类：安全依赖：代码执行应用场景：DevOps

安装技能

复制下面的话术发给你的 Agent，它会通过 secure-skills 检索并安装该技能。

执行命令安装此 skill： npx secure-skills-cli add ssl-certificate-checker
Metadata
name
ssl-certificate-checker
description
Check SSL/TLS certificate details including expiration date, issuer, validity, cipher suites, and security warnings for any domain. Use when verifying HTTPS security, monitoring certificate expiry, or troubleshooting SSL issues.

SSL Certificate Checker

Analyze SSL/TLS certificates for any domain to verify security configuration and monitor expiration.

When to Use

  • Checking SSL certificate expiration dates
  • Verifying certificate chain and issuer
  • Troubleshooting HTTPS connection issues
  • Auditing website security configuration
  • Monitoring certificates before renewal

When NOT to Use

  • Penetration testing (this is read-only)
  • Internal network certificates (use dedicated tools)
  • Certificate installation (this only checks, doesn't install)

Examples

Basic Certificate Check

# Check certificate for a domain
openssl s_client -connect example.com:443 -servername example.com </dev/null 2>/dev/null | openssl x509 -noout -dates -subject -issuer

# Get detailed certificate information
echo | openssl s_client -connect example.com:443 -servername example.com 2>/dev/null | openssl x509 -noout -text