Security Analyzer
aiskillstore/marketplace
Comprehensive security vulnerability analysis for codebases and infrastructure.
Scan code for security issues: dependency vulnerabilities (npm/pip audit), secret leaks (regex and entropy analysis), and OWASP anti-patterns like SQL injection, XSS, or command injection.
Install Code Vuln Audit
$ npx skills add zebbern/claude-code-guide --skill code-vuln-audit -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install zebbern/claude-code-guide code-vuln-audit --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/code-vuln-audit .claude/skills/code-vuln-audit && rm -rf skills-srcUse ~/.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/
Install the "code-vuln-audit" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/code-vuln-audit into .claude/skills/code-vuln-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-vuln-audit", 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 install https://github.com/zebbern/claude-code-guide/tree/main/skills/code-vuln-auditType 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.
$ npx skills add zebbern/claude-code-guide --skill code-vuln-audit -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install zebbern/claude-code-guide code-vuln-audit --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/code-vuln-audit .agents/skills/code-vuln-audit && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "code-vuln-audit" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/code-vuln-audit into .agents/skills/code-vuln-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-vuln-audit", 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.
$ npx skills add zebbern/claude-code-guide --skill code-vuln-audit -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install zebbern/claude-code-guide code-vuln-audit --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/code-vuln-audit .cursor/skills/code-vuln-audit && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "code-vuln-audit" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/code-vuln-audit into .cursor/skills/code-vuln-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-vuln-audit", 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 https://github.com/zebbern/claude-code-guide.git --path skills/code-vuln-audit--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add zebbern/claude-code-guide --skill code-vuln-audit -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install zebbern/claude-code-guide code-vuln-audit --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/code-vuln-audit .gemini/skills/code-vuln-audit && rm -rf skills-srcUse ~/.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/
Install the "code-vuln-audit" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/code-vuln-audit into .gemini/skills/code-vuln-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-vuln-audit", 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.
$ gh skill install zebbern/claude-code-guide code-vuln-auditInstalls 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).
$ npx skills add zebbern/claude-code-guide --skill code-vuln-audit -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/code-vuln-audit .github/skills/code-vuln-audit && rm -rf skills-srcUse ~/.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/
Install the "code-vuln-audit" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/code-vuln-audit into .github/skills/code-vuln-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-vuln-audit", 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.
$ npx skills add zebbern/claude-code-guide --skill code-vuln-audit -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install zebbern/claude-code-guide code-vuln-audit --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/code-vuln-audit .opencode/skills/code-vuln-audit && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "code-vuln-audit" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/code-vuln-audit into .opencode/skills/code-vuln-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-vuln-audit", 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
code-vuln-audit- GitHub stars
- 4.6k
- Token cost
- ~1.3k tokens
- SKILL.md length
- 421 words
- Files
- 3 (incl. scripts)
- Skills in repo
- 46
- Repo updated
- First seen
- Licence
- MIT
At a glance
Scan code for security issues: dependency vulnerabilities (npm/pip audit), secret leaks (regex and entropy analysis), and OWASP anti-patterns like SQL injection, XSS, or command injection.
- Works in 3 steps: Dependency Vulnerability Scanning (deps) → Secret Leak Detection (secrets) → OWASP Pattern Detection (owasp)
- The user mentions security scans
- SKILL.md covers Quick Start, Scan Module Details, Parameters and Output Format, plus 2 more sections
- Runs Python scripts from its folder; calls python3 and npm; needs AWS_KEY
What it does
Code Vuln Audit is an agent skill from zebbern/claude-code-guide. Scan code for security issues: dependency vulnerabilities (npm/pip audit), secret leaks (regex and entropy analysis), and OWASP anti-patterns like SQL injection, XSS, or command injection. Use when the user mentions security scans, vulnerability detection, secret leaks, API keys, OWASP, npm audit, pip-audit, hardcoded passwords, or code security checks.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including scripts (for example `scripts/security_scan.py`).
It sits in Security, covering Web application vulnerabilities, Security review and Vulnerability scanning. It works with npm. The repository describes itself as: Claude Code Guide - Setup, Commands, workflows, agents, skills & tips-n-tricks from beginner to power user! The licence is MIT.
When your agent uses it
- The user mentions security scans
- Vulnerability detection
- Hardcoded passwords
- Code security checks
Example prompts
- “/code-vuln-audit”
Requirements
- Python 3
- Node.js
- A credential in AWS_KEY
Workflow steps
3 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 4698e3b. 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
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python3npm
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
AWS_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Code Vuln Audit loads about 1.3k tokens when it runs. Until then it costs about 93 tokens; SKILL.md has 421 words of instructions outside code blocks.
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); the scripts in this folder are not scanned.
SKILL.md
The full file from zebbern/claude-code-guide at commit 4698e3b, republished under its MIT licence (© zebbern). 421 words, ~1,339 tokens.
Download SKILL.mdSave it as
.claude/skills/code-vuln-audit/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- code-vuln-audit
- description
- Scan code for security issues: dependency vulnerabilities (npm/pip audit), secret leaks (regex and entropy analysis), and OWASP anti-patterns like SQL injection, XSS, or command injection. Use when the user mentions security scans, vulnerability detection, secret leaks, API keys, OWASP, npm audit, pip-audit, hardcoded passwords, or code security checks.
- license
- MIT
code-vuln-audit
A code security scanning tool with three core scanning capabilities:
- Dependency Vulnerability Scanning — Automatically detects known vulnerabilities in npm / pip dependencies
- Secret Leak Detection — Discovers hardcoded secrets, tokens, and passwords via regex matching + Shannon entropy analysis
- OWASP Pattern Detection — Identifies common security anti-patterns such as SQL injection, XSS, command injection, and insecure deserialization
Quick Start
# Scan the current directory (all checks)
python3 scripts/security_scan.py .
# Scan dependencies only
python3 scripts/security_scan.py --mode deps .
# Detect secret leaks only
python3 scripts/security_scan.py --mode secrets /path/to/project
# Detect OWASP security patterns only
python3 scripts/security_scan.py --mode owasp .
# Output report in JSON format
python3 scripts/security_scan.py --format json --output report.json .
# Only show findings at high severity and above
python3 scripts/security_scan.py --severity high .Scan Module Details
1. Dependency Vulnerability Scanning (deps)
Automatically detects the project type and invokes the appropriate tool:
| Project Type | Detection File | Tool Used |
|---|---|---|
| Node.js | package.json + package-lock.json | npm audit |
| Python | requirements.txt / pyproject.toml / Pipfile | pip-audit |
If the corresponding audit tool is not installed, a helpful message is displayed instead of an error.
2. Secret Leak Detection (secrets)
Detection is performed in two ways:
Regex Matching: Covers common secret formats
| Secret Type | Example Pattern |
|---|---|
| AWS Access Key | 20-character string starting with AKIA |
| GitHub Token | Starts with ghp_ or github_pat_ |
| Slack Token | Starts with xoxb- or xoxp- |
| Stripe Key | Starts with sk_live_ or pk_live_ |
| Private Key File | -----BEGIN PRIVATE KEY----- |
| Generic API Key | Format like api_key = "..." |
| Credentials in URL | https://user:pass@host |
| JWT Token | eyJ... format |
Shannon Entropy Analysis: Computes information entropy for string constants in code (threshold > 4.5 and length >= 20) to discover secrets in non-standard formats.
3. OWASP Pattern Detection (owasp)
Covers statically detectable security patterns from the OWASP Top 10:
| OWASP Category | Detection Patterns |
|---|---|
| A02: Cryptographic Failures | Weak hashes (MD5/SHA1), weak ciphers (DES/RC4) |
| A03: Injection | SQL injection, command injection (os.system / subprocess shell / eval / exec), XSS (innerHTML / document.write / dangerouslySetInnerHTML / v-html) |
| A04: Insecure Design | Path traversal |
| A05: Security Misconfiguration | Debug mode enabled, CORS wildcard, binding to 0.0.0.0 |
| A08: Integrity Failures | Insecure deserialization (pickle / yaml.load / marshal / unserialize) |
| A10: SSRF | User input passed directly to HTTP requests |
Supported languages: Python, JavaScript/TypeScript, Java, PHP, Ruby, Go, and more.
Show full SKILL.md (131 more words)Show less
Parameters
| Parameter | Description | Default |
|---|---|---|
TARGET | Directory to scan | Current directory |
--mode MODE | Scan mode: all, deps, secrets, owasp | all |
--format FORMAT | Output format: text, json | text |
--output FILE | Output file path | stdout |
--severity LEVEL | Minimum reporting level: low, medium, high, critical | low |
--exclude-dir DIR | Additional directories to exclude (repeatable) | - |
--max-file-kb SIZE | Maximum file size to scan in KB | 512 |
-h, --help | Show help | - |
Output Format
Text Output (default)
=== Security Scan Report ===
Target: /path/to/project
Modules: deps, secrets, owasp
[CRITICAL] AWS Access Key ID
File: src/config.py:15
Code: AWS_KEY = "AKIAIOSFODNN7EXAMPLE"
[HIGH] SQL Injection (f-string)
File: src/db.py:42
Code: cursor.execute(f"SELECT * FROM users WHERE id={user_id}")
--- Summary ---
Critical: 1 | High: 1 | Medium: 0 | Low: 0
Total findings: 2JSON Output
{
"target": "/path/to/project",
"scan_time": "2026-04-14T10:30:00",
"findings": [
{
"scanner": "secrets",
"name": "AWS Access Key ID",
"severity": "critical",
"file": "src/config.py",
"line": 15,
"snippet": "AWS_KEY = \"AKIAIOSFODNN7EXAMPLE\"",
"category": "secret-pattern"
}
],
"summary": {"critical": 1, "high": 0, "medium": 0, "low": 0, "total": 1}
}Exit Codes
| Exit Code | Meaning |
|---|---|
0 | No findings |
1 | Findings present (at least one security issue) |
2 | Scanner internal error |
Prerequisites
- Python 3.7+ (uses standard library only)
- Dependency scanning requires the corresponding tools:
npm(for Node.js projects),pip-audit(for Python projects) - If an audit tool is missing, that module will be skipped with a notice — other modules continue to run normally
© zebbern, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 2 other files (scripts) in skills/code-vuln-audit of zebbern/claude-code-guide.
- SKILL.md
- LICENSE
- scripts/security_scan.py
Open the folder on GitHubat commit 4698e3b
Compare with similar skills
Code Vuln Audit 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Code Vuln Audit this skillzebbern/claude-code-guide | 4.6k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Security Analyzeraiskillstore/marketplace | 430 | — | ~1.2k | Automated safety check: Notes | None | |
| Senior Secopsalirezarezvani/claude-skills | 28k | 1 repos | ~4k | Automated safety check: Pass | MIT | |
| Security Auditoreigent-ai/eigent | 15k | — | ~1.8k | Automated safety check: Notes | Apache-2.0 | |
| Code Audit3stoneBrother/code-audit | 893 | 1 repos | ~2.7k | Automated safety check: Pass | None | |
| Security Audit Scannerruvnet/ruflo | 74k | 2 repos | ~823 | Automated safety check: Pass | MIT |
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Works with
Categories
Questions about Code Vuln Audit
What does Code Vuln Audit do?
Scan code for security issues: dependency vulnerabilities (npm/pip audit), secret leaks (regex and entropy analysis), and OWASP anti-patterns like SQL injection, XSS, or command injection. Code Vuln Audit is an agent skill from zebbern/claude-code-guide. Scan code for security issues: dependency vulnerabilities (npm/pip audit), secret leaks (regex and entropy analysis), and OWASP anti-patterns like SQL injection, XSS, or command injection.
When should I use Code Vuln Audit?
Code Vuln Audit fits situations like: the user mentions security scans; vulnerability detection; hardcoded passwords; code security checks.
How do I install Code Vuln Audit in Claude Code?
Run `npx skills add zebbern/claude-code-guide --skill code-vuln-audit -a claude-code`. Or copy the skill folder (skills/code-vuln-audit in zebbern/claude-code-guide) into .claude/skills/code-vuln-audit in your project. Claude Code loads it when a task matches its description.
How do I install Code Vuln Audit in Codex?
Run `npx skills add zebbern/claude-code-guide --skill code-vuln-audit -a codex`. Or copy the skill folder (skills/code-vuln-audit in zebbern/claude-code-guide) into .agents/skills/code-vuln-audit in your project. Codex loads it when a task matches its description.
Can I use Code Vuln Audit 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 zebbern/claude-code-guide --skill code-vuln-audit -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-vuln-audit, .gemini/skills/code-vuln-audit, .github/skills/code-vuln-audit and .opencode/skills/code-vuln-audit in your project.
What does Code Vuln Audit need to run?
Going by SKILL.md and its folder, Code Vuln Audit needs Python for the scripts in its folder, the command-line tools its instructions call (python3 and npm) and credentials named AWS_KEY. Our summary lists: Python 3; Node.js; A credential in AWS_KEY.
Does Code Vuln Audit access the network?
SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Code Vuln Audit 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Code Vuln Audit use?
Code Vuln Audit is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Code Vuln Audit use?
About 1.3k tokens (SKILL.md is roughly 5.4k 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 Code Vuln Audit?
Skills that share tags, products or a category with Code Vuln Audit: Security Analyzer (aiskillstore/marketplace, 430 stars), Senior Secops (alirezarezvani/claude-skills, 28k stars), Security Auditor (eigent-ai/eigent, 15k stars) and Code Audit (3stoneBrother/code-audit, 893 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Code Vuln Audit?
zebbern (a GitHub user) maintains it in zebbern/claude-code-guide, which has 4,648 GitHub stars. The repository holds 46 skills in this directory. The repository was last updated on October 7, 2026.
Source: zebbern/claude-code-guide on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.