Agent skill

Security Scan

Scan your Claude Code configuration (.claude/ directory) for security vulnerabilities, misconfigurations, and injection risks using AgentShield.

MITAuto-check passedAgent Workflows

Install Security Scan

skills CLI

$ npx skills add affaan-m/ECC --skill security-scan -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install affaan-m/ECC security-scan --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/security-scan .claude/skills/security-scan && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "security-scan" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/security-scan into .claude/skills/security-scan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-scan", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/affaan-m/ECC/tree/main/skills/security-scan

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add affaan-m/ECC --skill security-scan -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install affaan-m/ECC security-scan --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/security-scan .agents/skills/security-scan && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "security-scan" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/security-scan into .agents/skills/security-scan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-scan", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add affaan-m/ECC --skill security-scan -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install affaan-m/ECC security-scan --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/security-scan .cursor/skills/security-scan && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "security-scan" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/security-scan into .cursor/skills/security-scan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-scan", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/affaan-m/ECC.git --path skills/security-scan

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add affaan-m/ECC --skill security-scan -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install affaan-m/ECC security-scan --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/security-scan .gemini/skills/security-scan && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "security-scan" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/security-scan into .gemini/skills/security-scan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-scan", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install affaan-m/ECC security-scan

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add affaan-m/ECC --skill security-scan -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/security-scan .github/skills/security-scan && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "security-scan" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/security-scan into .github/skills/security-scan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-scan", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add affaan-m/ECC --skill security-scan -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install affaan-m/ECC security-scan --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/security-scan .opencode/skills/security-scan && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "security-scan" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/security-scan into .opencode/skills/security-scan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-scan", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: security-scan
GitHub stars: 276k
Used in: 5 other repos
Token cost: ~1.1k tokens
SKILL.md length: 342 words
Files: 1
Skills in repo: 683
Repo updated: Oct 10, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Scan your Claude Code configuration (.claude/ directory) for security vulnerabilities, misconfigurations, and injection risks using AgentShield.

Works in 3 steps: Attacker (Red Team) — finds attack vectors → Defender (Blue Team) — recommends… → Auditor (Final Verdict) — synthesizes…
Auditing a .claude/ directory — CLAUDE.md
SKILL.md covers When to Activate, What It Scans, Prerequisites and Usage, plus 3 more sections
Calls npx and npm; needs ANTHROPIC_API_KEY

What it does

Security Scan is an agent skill from affaan-m/ECC. Scan your Claude Code configuration (.claude/ directory) for security vulnerabilities, misconfigurations, and injection risks using AgentShield. Checks CLAUDE.md, settings.json, MCP servers, hooks, and agent definitions. Use when auditing a .claude/ directory — CLAUDE.md, settings.json, MCP servers, hooks, or agent definitions.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows, covering Security review, MCP servers and Agent instruction files. It works with Model Context Protocol. The repository describes itself as: The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond. The licence is MIT.

When your agent uses it

Auditing a .claude/ directory — CLAUDE.md
Agent definitions

Example prompts

“/security-scan”

Requirements

Node.js
A credential in ANTHROPIC_API_KEY

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

Attacker (Red Team) — finds attack vectors
Defender (Blue Team) — recommends hardening
Auditor (Final Verdict) — synthesizes both perspectives

What it can do on your machine

Read from SKILL.md and the folder at commit 4eb71d9. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- npx
- npm
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- github.com
- npmjs.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
- ANTHROPIC_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Security Scan loads about 1.1k tokens when it runs. Until then it costs about 86 tokens; SKILL.md has 342 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~86
When it runs · the whole SKILL.md, loaded when a task matches: ~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from affaan-m/ECC at commit 4eb71d9, republished under its MIT licence (© affaan-m). 342 words, ~1,144 tokens.

Download SKILL.mdSave it as .claude/skills/security-scan/SKILL.md (or your agent's skills folder).

name: security-scan
description: Scan your Claude Code configuration (.claude/ directory) for security vulnerabilities, misconfigurations, and injection risks using AgentShield. Checks CLAUDE.md, settings.json, MCP servers, hooks, and agent definitions. Use when auditing a .claude/ directory — CLAUDE.md, settings.json, MCP servers, hooks, or agent definitions.
metadata.origin: ECC

Security Scan Skill

Audit your Claude Code configuration for security issues using AgentShield.

When to Activate

Setting up a new Claude Code project
After modifying .claude/settings.json, CLAUDE.md, or MCP configs
Before committing configuration changes
When onboarding to a new repository with existing Claude Code configs
Periodic security hygiene checks

What It Scans

File	Checks
`CLAUDE.md`	Hardcoded secrets, auto-run instructions, prompt injection patterns
`settings.json`	Overly permissive allow lists, missing deny lists, dangerous bypass flags
`mcp.json`	Risky MCP servers, hardcoded env secrets, npx supply chain risks
`hooks/`	Command injection via interpolation, data exfiltration, silent error suppression
`agents/*.md`	Unrestricted tool access, prompt injection surface, missing model specs

Prerequisites

AgentShield must be installed. Check and install if needed:

bash

# Check if installed
npx ecc-agentshield --version

# Install globally (recommended)
npm install -g ecc-agentshield

# Or run directly via npx (no install needed)
npx ecc-agentshield scan .

Usage

Basic Scan

Run against the current project's .claude/ directory:

bash

# Scan current project
npx ecc-agentshield scan

# Scan a specific path
npx ecc-agentshield scan --path /path/to/.claude

# Scan with minimum severity filter
npx ecc-agentshield scan --min-severity medium

Output Formats

bash

# Terminal output (default) — colored report with grade
npx ecc-agentshield scan

# JSON — for CI/CD integration
npx ecc-agentshield scan --format json

# Markdown — for documentation
npx ecc-agentshield scan --format markdown

# HTML — self-contained dark-theme report
npx ecc-agentshield scan --format html > security-report.html

Auto-Fix

Apply safe fixes automatically (only fixes marked as auto-fixable):

bash

npx ecc-agentshield scan --fix

This will:

Replace hardcoded secrets with environment variable references
Tighten wildcard permissions to scoped alternatives
Never modify manual-only suggestions

Opus 4.6 Deep Analysis

Run the adversarial three-agent pipeline for deeper analysis:

bash

# Requires ANTHROPIC_API_KEY
export ANTHROPIC_API_KEY=your-key
npx ecc-agentshield scan --opus --stream

This runs:

Attacker (Red Team) — finds attack vectors
Defender (Blue Team) — recommends hardening
Auditor (Final Verdict) — synthesizes both perspectives

Initialize Secure Config

Scaffold a new secure .claude/ configuration from scratch:

bash

npx ecc-agentshield init

Creates:

settings.json with scoped permissions and deny list
CLAUDE.md with security best practices
mcp.json placeholder

GitHub Action

Add to your CI pipeline:

yaml

- uses: affaan-m/agentshield@v1
  with:
    path: '.'
    min-severity: 'medium'
    fail-on-findings: true

Severity Levels

Grade	Score	Meaning
A	90-100	Secure configuration
B	75-89	Minor issues
C	60-74	Needs attention
D	40-59	Significant risks
F	0-39	Critical vulnerabilities

Interpreting Results

Critical Findings (fix immediately)

Hardcoded API keys or tokens in config files
Bash(*) in the allow list (unrestricted shell access)
Command injection in hooks via ${file} interpolation
Shell-running MCP servers

High Findings (fix before production)

Auto-run instructions in CLAUDE.md (prompt injection vector)
Missing deny lists in permissions
Agents with unnecessary Bash access

Medium Findings (recommended)

Silent error suppression in hooks (2>/dev/null, || true)
Missing PreToolUse security hooks
npx -y auto-install in MCP server configs

Info Findings (awareness)

Missing descriptions on MCP servers
Prohibitive instructions correctly flagged as good practice

Files

Just SKILL.md in skills/security-scan of affaan-m/ECC.

Open the folder on GitHubat commit 4eb71d9

Used in 5 other repositories

We found 9 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 5 other GitHub owners. This page covers the copy in affaan-m/ECC, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Security Scan next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Security Scan compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Security Scan this skillaffaan-m/ECC	276k	5 repos	~1.1k	Automated safety check: Pass	MIT	today
MCP Security Auditboshi-xixixi/TraeSkill	276	—	~2.2k	Automated safety check: Pass	MIT	5 mo ago
Security Scanxu-xiang/everything-claude-code-zh	2k	—	~723	Automated safety check: Pass	MIT	7 mo ago
Security Scanxu-xiang/everything-claude-code-zh	2k	—	~771	Automated safety check: Pass	MIT	7 mo ago
Agent Setup Health Audittw93/Waza	7.2k	—	~5.2k	Automated safety check: Notes	MIT	today
Semantix GuideGnosil/semantix	821	—	~2.1k	Automated safety check: Pass	MIT	5 days ago

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Questions about Security Scan

What does Security Scan do?

Scan your Claude Code configuration (.claude/ directory) for security vulnerabilities, misconfigurations, and injection risks using AgentShield. Security Scan is an agent skill from affaan-m/ECC.claude/ directory) for security vulnerabilities, misconfigurations, and injection risks using AgentShield.

When should I use Security Scan?

Security Scan fits situations like: auditing a .claude/ directory — CLAUDE.md; agent definitions.

How do I install Security Scan in Claude Code?

Run `npx skills add affaan-m/ECC --skill security-scan -a claude-code`. Or copy the skill folder (skills/security-scan in affaan-m/ECC) into .claude/skills/security-scan in your project. Claude Code loads it when a task matches its description.

How do I install Security Scan in Codex?

Run `npx skills add affaan-m/ECC --skill security-scan -a codex`. Or copy the skill folder (skills/security-scan in affaan-m/ECC) into .agents/skills/security-scan in your project. Codex loads it when a task matches its description.

Can I use Security Scan in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add affaan-m/ECC --skill security-scan -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/security-scan, .gemini/skills/security-scan, .github/skills/security-scan and .opencode/skills/security-scan in your project.

What does Security Scan need to run?

Going by SKILL.md and its folder, Security Scan needs the command-line tools its instructions call (npx and npm) and credentials named ANTHROPIC_API_KEY. Our summary lists: Node.js; A credential in ANTHROPIC_API_KEY.

Does Security Scan access the network?

SKILL.md names 2 domains. As links in the text: github.com and npmjs.com. This is read from the text; nothing was executed.

Is Security Scan safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Security Scan use?

Security Scan is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Security Scan use?

About 1.1k tokens (SKILL.md is roughly 4.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Security Scan?

Skills that share tags, products or a category with Security Scan: MCP Security Audit (boshi-xixixi/TraeSkill, 276 stars), Security Scan (xu-xiang/everything-claude-code-zh, 2k stars), Security Scan (xu-xiang/everything-claude-code-zh, 2k stars) and Agent Setup Health Audit (tw93/Waza, 7.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Security Scan?

affaan-m (a GitHub user) maintains it in affaan-m/ECC, which has 276,111 GitHub stars. The repository holds 683 skills in this directory. The repository was last updated on October 10, 2026.

Source: affaan-m/ECC on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Security Scan

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Security Scan Skill

When to Activate

What It Scans

Prerequisites

Usage

Basic Scan

Output Formats

Auto-Fix

Opus 4.6 Deep Analysis

Initialize Secure Config

GitHub Action

Severity Levels

Interpreting Results

Critical Findings (fix immediately)

High Findings (fix before production)

Medium Findings (recommended)

Info Findings (awareness)

Links

Files

Used in 5 other repositories

Compare with similar skills

Similar skills

More from affaan-m/ECC

Related

Questions about Security Scan