check domain health

The problem

Manually checking SSL expiry, DNS records, and mail security protocols across multiple domains is tedious and error-prone. Most developers only realize a certificate has expired or a DMARC record is missing after a service outage or email deliverability crisis.

What it does

• Audits TLS/SSL certificate validity and calculates expiry countdowns.
• Verifies DNS record configurations for correctness.
• Checks HTTP reachability status to ensure web services are online.
• Evaluates mail security posture by inspecting SPF and DMARC records.
• Provides risk-level assessments for every automated check performed.

Why this beats prompting it yourself

A standard LLM cannot see the live state of the web and will hallucinate domain details. This skill connects your agent to actual networking tools, ensuring reports are based on real-time data rather than training data or guesses. It handles session-based caching and specific error states, providing a reliable diagnostic layer that broad prompts lack.

Use cases

• Perform a routine security audit on a list of client domains.
• Troubleshoot "site down" or SSL handshake errors during deployment.
• Verify mail server authentication settings (SPF/DMARC) for better deliverability.
• Monitor certificate renewals by flagging upcoming expiries during development.