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skill-security-guard

skill-security-guard is a skill for Claude Code from ryfineZ/my-ai-skills. It costs 104 tokens per session (897 once invoked), scanned A, original, no licence file.

A security auditor for local or GitHub-based AI skills. It checks for risks such as prompt injection, unsafe downloads, credential theft, data leaks, persistence, and privilege escalation.

In plain words
What is it for?
Use it to review a skill before installation and receive a risk result such as SAFE, CAUTION, REVIEW, or BLOCK.
Why use it?
It helps identify potentially malicious or unsafe skills before they are installed or used.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

not rated 127repo 7mo ago A scan 104 tokens no licence

Good fit Use it to review a skill before installation and receive a risk result such as SAFE, CAUTION, REVIEW, or BLOCK.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ryfinez/my-ai-skills/skill-security-guard
View source ↗ ryfineZ/my-ai-skills
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add ryfineZ/my-ai-skills --skill skill-security-guard
Clone the repo
git clone --depth 1 https://github.com/ryfineZ/my-ai-skills

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for skill-security-guard

README.md
[![agentmods](https://agentmods.dev/badge/skills/ryfinez/my-ai-skills/skill-security-guard/github.svg)](https://agentmods.dev/skills/ryfinez/my-ai-skills/skill-security-guard)
Your own site
<a href="https://agentmods.dev/skills/ryfinez/my-ai-skills/skill-security-guard"><img src="https://agentmods.dev/badge/skills/ryfinez/my-ai-skills/skill-security-guard/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for skill-security-guard

Your own site · 80×15
<a href="https://agentmods.dev/skills/ryfinez/my-ai-skills/skill-security-guard"><img src="https://agentmods.dev/badge/skills/ryfinez/my-ai-skills/skill-security-guard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 897 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00104 $0.00897
Opus 5.5 $0.00042 $0.00359
Sonnet 5.5 $0.00021 $0.00179
Haiku 4.5 $0.00010 $0.00090

Measured 2mo ago against content hash 25533a121554, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skill-security-guard scanned grade A with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/skill_security_guard.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootlowPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- Privilege Escalation（`sudo`、`chmod +s`、`setuid`）

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Download-and-Execute（`curl|bash` / `wget|sh` / `IEX`）
packages/core/skill-security-guard/SKILL.md · 98 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 98 lines · 104 tokens per session scan A 25533a121554

Subscribe to this mod's changes

skill-security-guard is a skill published in the GitHub repository ryfineZ/my-ai-skills (127 stars, last pushed 7mo ago), with no licence file. It adds 104 tokens to every session and 897 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Security
Related

skill-security-guard compared with skills from other repositories

skill-security-guard next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
skill-security-guardryfineZ/my-ai-skillsSkill1277mo agononeA104Claude Code
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k2d agoMITA200Claude Code, Codex
playwright-climicrosoft/playwrightSkill100kyesterdayApache-2.0A19Claude Code
browser-automationopenclaw/openclawSkill394ktodayMITA36Claude Code
systematic-debuggingobra/superpowersSkill315k5d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code