certificate-checker

Check SSL/TLS certificate expiry and details for domains

SKILL.md

GitHub

Certificate Checker Skill

Provides SSL/TLS certificate inspection:

  • Check certificate expiry date
  • View certificate issuer and subject
  • List certificate chain
  • Check certificate validity

Use builtin_cert_checker tool with fields:

  • domain: target domain to check (required)
  • port: (optional) port number (default: 443)

Note: Requires network access to the target domain.