certificate-checker

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Check SSL/TLS certificate expiry and details for domains

fisker086 By fisker086 schedule Updated 4/25/2026

name: certificate-checker description: Check SSL/TLS certificate expiry and details for domains activation_keywords: [certificate, ssl, tls, cert, expiry, expire, https] execution_mode: client

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.

Install via CLI
npx skills add https://github.com/fisker086/SuiYu --skill certificate-checker
Repository Details
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