skill validator antivirus

The problem

Installing third-party AI skills introduces security risks, including malware execution or unauthorized system actions. Manually auditing skill code for malicious intent is time consuming and prone to missing subtle vulnerabilities.

What it does

• Scans skill source code for malware signatures and unauthorized action patterns.
• Performs deep domain audits including SSL certificate reviews and configuration checks.
• Verifies DNS records, including SPF and DMARC settings, to ensure domain integrity.
• Manages session-based caching to provide fast lookups while allowing forced fresh audits.
• Standardizes security reporting by translating raw tool outputs into actionable summaries.

Frameworks & tools

This skill requires the skill_validator MCP server and a VIRUSTOTAL_API_KEY for external threat intelligence.

Why this beats prompting it yourself

A standard prompt lacks the specialized logic required to interface with external security APIs and manage stateful session memory. This skill ensures consistent parameter handling for the MCP tool and prevents the LLM from hallucinating security results when upstream services are unavailable.

Use cases

• Audit a third-party skill's code before allowing it to access your environment.
• Check a domain's SSL and DNS configuration to verify identity.
• Verify email security protocols like SPF and DMARC for a specific host.
• Perform batch security reviews of skills across different development sessions.

Known limitations

Requires an active VirusTotal API key configured in a .env file. The skill cannot perform audits if upstream security services are offline or rate-limited.