skillguard

Scan AgentSkill packages for malicious code and prompt injection.

23|5|Updated Feb 23, 2026
One-click install
npx skills add https://github.com/EverClaw/EverClaw --skill skillguard-everclaw
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: skillguard
Source: https://github.com/EverClaw/EverClaw/tree/main/skills/skillguard
Command: npx skills add https://github.com/EverClaw/EverClaw --skill skillguard-everclaw

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

SkillGuard helps you vet untrusted AI skills before they reach an agent, reducing the risk of credential theft, prompt hijacking, hidden exfiltration, and obfuscated payloads.

Core Features & Use Cases

  • Scans skill packages for dangerous code patterns, prompt injection, data exfiltration, persistence tricks, and evasion techniques.
  • Separates trusted internal skills from external downloads so legitimate API calls, environment access, and file operations are evaluated in context.
  • Supports local audits, ClawHub package review, version-diff inspection, and ongoing monitoring for modified skills.
  • Use it when you want to review a third-party skill before installation or re-check an updated internal skill for newly introduced risks.

Quick Start

Ask SkillGuard to scan the target skill directory or ClawHub package and return the highest-risk findings with a clear install verdict.

Frequently Asked Questions about skillguard

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I scan AgentSkill packages for malicious code and prompt injection before install?

To scan AgentSkill packages for malicious code and prompt injection, use SkillGuard to analyze SKILL.md, JavaScript, Python, shell, and markdown content for credential theft, data exfiltration, obfuscation, and persistence patterns. It returns the highest-risk findings with a clear install verdict.

What is the best way to detect data exfiltration in third-party AI skills?

The best way to detect data exfiltration in third-party AI skills is to scan the skill package directory for dangerous code patterns and evasion techniques. SkillGuard separates trusted internal skills from external downloads so API calls and file operations are evaluated in context.

Does SkillGuard require Node.js to audit local skills and ClawHub downloads?

Yes, SkillGuard requires Node.js to audit local skills, ClawHub package downloads, and modified versions. It analyzes SKILL.md, JavaScript, Python, shell, and markdown content during install, audit, and watch workflows to identify unsafe patterns.

Can I monitor modified versions of installed skills for newly introduced risks?

Yes, you can monitor modified versions of installed skills for newly introduced risks using the watch workflow. SkillGuard supports ongoing monitoring and version-diff inspection to re-check updated internal or external skills for hidden exfiltration and prompt hijacking.

What types of unsafe patterns does a skill security scanner look for in SKILL.md and shell scripts?

A skill security scanner looks for credential theft, data exfiltration, obfuscation, persistence tricks, and evasion techniques in SKILL.md and shell scripts. SkillGuard applies these checks across JavaScript, Python, shell, and markdown content to block malicious skills before they reach an agent.

When should I not rely on automated malware detection for untrusted AI skills?

Automated malware detection for untrusted AI skills should not be your only line of defense when evaluating complex obfuscated payloads or nuanced prompt injection. Use SkillGuard as a pre-install vetting step to reduce risk, but apply contextual trust model evaluation for legitimate API calls and file operations.