# Ssl Cert Check

> Check SSL certificate validity and expiration for a domain

- Skill: `jadegate/ssl-cert-check` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add jadegate/ssl-cert-check`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jadegate/ssl-cert-check/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: jadegate (https://skillmd.com/u/jadegate)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/jadegate/ssl-cert-check

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# SSL Certificate Check

Check SSL certificate validity and expiration for a domain

## When to Use

- User wants to check ssl
- User wants to ssl check
- Keywords: ssl, certificate, security, https

## Required Parameters

- **domain** (string): Domain to check SSL certificate

## Output

- **valid** (boolean): Certificate is valid
- **issuer** (string): Certificate issuer
- **expires** (string): Expiration date
- **days_left** (number): Days until expiration

## Security

- Sandbox level: strict
- Max execution time: 30000ms
- Network whitelist: ssl-checker.io
- JadeGate verified: Yes (5-layer security check passed)

## Execution Flow

Entry: `fetch` -> 5 steps -> Exit: `ret_ok`, `ret_fail`