What is agentshield-security-review?

A security-review workflow for repositories that configure AI coding agents such as Claude Code, Cursor, Codex, OpenCode, Grok, and Kimi.

Use it to inventory agent-related files and integrations, run an available security scanner, and separate scanner-backed findings from manual observations.

Agent instructions, hooks, commands, and tool connections can create security risks that a normal source-code review may miss.

agentshield-security-review — Skill for Claude Code and Codex by giang

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 giang6283623/minimal-vibe-coding-kit --skill agentshield-security-review

Clone the repo

git clone --depth 1 https://github.com/giang6283623/minimal-vibe-coding-kit

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/giang6283623/minimal-vibe-coding-kit/agentshield-security-review.svg)](https://agentmods.dev/skills/giang6283623/minimal-vibe-coding-kit/agentshield-security-review)

Your own site

<a href="https://agentmods.dev/skills/giang6283623/minimal-vibe-coding-kit/agentshield-security-review"><img src="https://agentmods.dev/badge/skills/giang6283623/minimal-vibe-coding-kit/agentshield-security-review.svg" alt="Measured on agentmods" height="20"></a>

Per session 162 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,201 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Agent Snooping · line 44
Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.

Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.

How audits are shown

Origin original 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.

Model	Per session	Once invoked
Fable 5.1	$0.00162	$0.01201
Opus 5	$0.00081	$0.00600
Sonnet 5	$0.00032	$0.00240
Haiku 4.5	$0.00016	$0.00120

Measured 8d ago against content hash d63ba50d71dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

agentshield-security-review scanned grade A with 0 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 8d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/agentshield_repo_probe.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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/agentshield-security-review/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AgentShield Security Review

Use this skill to run an AgentShield-style review for Claude Code, Cursor, Codex, OpenCode, Grok, and Kimi repositories. Treat the repo root as the source of truth, then inspect agent surfaces before normal code review.

Core rule

Do not invent findings. Prefer deterministic scanner output when available, then add reviewer judgment separately. Clearly label each finding as scanner-backed, manual-confirmed, or manual-suspected.

Standard workflow

Identify the repo root and active harness surfaces.
Run node .vibekit/scripts/agentshield-probe.mjs . to inventory active provider surfaces, shared skills, hooks, MCP, commands, and repo instruction files.
Check whether the scanner is already installed locally:
```
npm ls ecc-agentshield --depth=0 --ignore-scripts
```
If it is unavailable, use the fallback manual review by default. Fetching and executing a package is a separate trust decision; request approval before using the exact reviewed version.
With a local install or explicit approval, run the version-pinned scanner from the repo root:
```
npx [email protected] scan --path . --format text
```

If JSON is needed for CI or automation, run:

npx [email protected] scan --path . --format json

If safe auto-fixes are requested, first summarize the proposed edits, then run:
```
npx [email protected] scan --path . --fix
```
Re-run the scan after fixes and report before/after score, severity counts, and changed files.
If AgentShield is unavailable or package execution is not approved, perform the fallback manual review in references/review-checklist.md.

Harness-native layout

Use a shared root skill where possible:

.vibekit/skills/agentshield-security-review/SKILL.md is the canonical workflow.
Claude Code may add a slash-command shim in .vibekit/commands/security-scan.md or .claude/commands/security-scan.md.
Codex and OpenCode consume the shared .agents/skills/ registry. Codex may additionally use .codex-plugin/plugin.json; OpenCode uses .opencode/commands/ and its root opencode.json permissions.
Do not duplicate divergent Claude, Codex, and OpenCode skill bodies. Duplication causes drift.

Read the full file on GitHub · 87 lines

Files

What ships with it

5 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.

8d ago First seen · 87 lines · 162 tokens per session scan A d63ba50d71dc

Subscribe to this mod's changes

agentshield-security-review is a skill published in the GitHub repository giang6283623/minimal-vibe-coding-kit (21 stars, last pushed 11d ago), licensed MIT. It adds 162 tokens to every session and 1,201 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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