# Security Scan

> Run SkillGuard before installing third-party Agent Skills, with optional semantic review only when the user explicitly allows network/model use.

- **Type:** Skill
- **Install:** `agentstack add skill-stella-skillguard-security-scan`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [stella](https://agentstack.voostack.com/s/stella)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [stella](https://github.com/stella)
- **Source:** https://github.com/stella/skillguard/tree/main/packages/cli/skills/security-scan
- **Website:** https://stll.app

## Install

```sh
agentstack add skill-stella-skillguard-security-scan
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# SkillGuard Security Scan

Use this skill before installing or enabling a third-party Agent Skill.

## Default Static Scan

Run a deterministic local scan first:

```sh
skillguard scan  --preset strict --policy strict
```

Do not install the skill if the scan fails unless the user explicitly accepts
the risk after reviewing the findings.

## Semantic Review

Run semantic review only when the user explicitly approves sending the candidate
skill content to a model provider:

```sh
skillguard scan  \
  --preset paranoid \
  --policy strict \
  --allow-network \
  --semantic \
  --semantic-provider openai
```

Semantic review requires provider credentials, normally `OPENAI_API_KEY`. For
OpenAI-compatible local endpoints, use:

```sh
skillguard scan  \
  --preset paranoid \
  --policy strict \
  --allow-network \
  --semantic \
  --semantic-provider openai-compatible \
  --semantic-base-url http://localhost:11434/v1
```

Never include unrelated user documents, chat history, workspace secrets, or
credentials in the scan target.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [stella](https://github.com/stella)
- **Source:** [stella/skillguard](https://github.com/stella/skillguard)
- **License:** Apache-2.0
- **Homepage:** https://stll.app

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-stella-skillguard-security-scan
- Seller: https://agentstack.voostack.com/s/stella
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.