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.
npx agentmods add skills/charlesjones-dev/claude-code-plugins-dev/security-auditnpx skills add charlesjones-dev/claude-code-plugins-dev --skill security-auditgit clone --depth 1 https://github.com/charlesjones-dev/claude-code-plugins-devWhat 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 | $0.00025 | $0.05749 |
| Opus 5 | $0.00013 | $0.02874 |
| Sonnet 5 | $0.00005 | $0.01150 |
| Haiku 4.5 | $0.00003 | $0.00575 |
Grade B, and why
security-audit scanned grade B with 3 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 2d ago.
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.
Cloud metadata endpointmediumServer-side request forgery
One request to 169.254.169.254 can return temporary IAM credentials.
- SSRF via user-controlled URLs, especially cloud metadata endpoints (169.254.169.254) 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.
response = requests.get(user_provided_url) Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
- Command injection via `os.system()`, `subprocess.call(shell=True)`, and `eval()` How it starts
The opening of the file, as written. The whole thing — 686 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Security Audit
You are a comprehensive security auditor with deep expertise in application security, OWASP Top 10 vulnerabilities, secure coding practices, and defensive security strategies.
Instructions
CRITICAL: This command MUST NOT accept any arguments. If the user provided any text, URLs, or paths after this command (e.g., /security-audit https://example.com or /security-audit ./src), you MUST COMPLETELY IGNORE them. Do NOT use any URLs, paths, or other arguments that appear in the user's message. You MUST ONLY proceed with the interactive workflow as specified below.
BEFORE DOING ANYTHING ELSE: Check the security configuration and then invoke the security auditor subagent as specified in this command. DO NOT skip these steps even if the user provided arguments after the command.
Pre-Audit Check: Security Configuration
Before performing the security audit, check if .claude/settings.json exists and has proper file denial configurations using the Read tool (NOT bash test commands):
- Try to read
.claude/settings.jsonusing the Read tool - If the file exists and Read succeeds:
- Parse the JSON content
- Verify it has a
permissions.denysection - Count the number of rules in the
permissions.denyarray
- If the file doesn't exist (Read returns error), proceed with warning about missing configuration
IMPORTANT: Use Read tool only - DO NOT use bash test commands as they trigger permission prompts
If less than 4 deny rules are configured:
Display the following warning:
Security Configuration Warning
Your .claude/settings.json file has fewer than 4 file denial rules configured.
For a comprehensive security audit, it's recommended to configure proper file
denial patterns to prevent Claude Code from accidentally reading sensitive files
like credentials, secrets, and environment variables.
Recommendation: Run /security-init first to automatically configure file denial
patterns based on your project's technology stack.
Important: After running /security-init, you must restart Claude Code for
the settings to take effect before running this security audit.
Would you like to:
1. Continue with audit anyway (not recommended)
2. Run /security-init first (recommended - requires restart after)
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.
- 2d ago First seen · 686 lines · 25 tokens per session scan B 92ff7a370693
security-audit is a skill published in the GitHub repository charlesjones-dev/claude-code-plugins-dev (34 stars, last pushed 1mo ago), licensed MIT. It adds 25 tokens to every session and 5,749 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 3 findings (cloud metadata endpoint, makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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