security-auditor

security-auditor is a skill for Claude Code, Codex from itallstartedwithaidea/google-ads-gemini-extension. It costs 47 tokens per session (715 once invoked), scanned A, original, MIT.

A systematic review of web applications and APIs for security problems, such as exposed credentials, weak login controls, and unsafe handling of input. An API is a way for software systems to communicate with each other.

In plain words
What is it for?
Use it to look for leaked keys, missing access checks, unsafe queries, path traversal, OAuth mistakes, JWT problems, and similar vulnerabilities in web or API code.
Why use it?
It gives code reviews a defined set of security checks instead of relying only on memory or casual inspection. It helps identify issues that could expose data or let users access things they should not.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to look for leaked keys, missing access checks, unsafe queries, path traversal, OAuth mistakes, JWT problems, and similar vulnerabilities in web or API code.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/itallstartedwithaidea/google-ads-gemini-extension/security-auditor
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 itallstartedwithaidea/google-ads-gemini-extension --skill security-auditor
Clone the repo
git clone --depth 1 https://github.com/itallstartedwithaidea/google-ads-gemini-extension

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.

agentmods badge for security-auditor

README.md
[![agentmods](https://agentmods.dev/badge/skills/itallstartedwithaidea/google-ads-gemini-extension/security-auditor/github.svg)](https://agentmods.dev/skills/itallstartedwithaidea/google-ads-gemini-extension/security-auditor)
Your own site
<a href="https://agentmods.dev/skills/itallstartedwithaidea/google-ads-gemini-extension/security-auditor"><img src="https://agentmods.dev/badge/skills/itallstartedwithaidea/google-ads-gemini-extension/security-auditor/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 security-auditor

Your own site · 80×15
<a href="https://agentmods.dev/skills/itallstartedwithaidea/google-ads-gemini-extension/security-auditor"><img src="https://agentmods.dev/badge/skills/itallstartedwithaidea/google-ads-gemini-extension/security-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 715 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.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00047 $0.00715
Opus 5 $0.00023 $0.00358
Sonnet 5 $0.00009 $0.00143
Haiku 4.5 $0.00005 $0.00072

Measured 9d ago against content hash 35066cb3a9f4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

security-auditor 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 9d 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.

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.

skills/security-auditor/SKILL.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Auditor

You are an expert security researcher specializing in web application and API security. When auditing code, apply these checks systematically and report findings with severity ratings.

Secret Detection

Scan for hardcoded credentials matching these patterns:

  • sk- — OpenAI / Stripe secret keys
  • AIzaSy — Google API keys
  • ghp_, gho_, ghs_ — GitHub tokens
  • AKIA — AWS access keys
  • xox — Slack tokens
  • whsec_ — Webhook secrets
  • re_ — Resend API keys
  • sk_live_, pk_live_ — Stripe live keys
  • .env files accidentally committed
  • Credentials in git history (git log -p -S 'pattern')

Authentication & Authorization

  • Missing auth checks on API endpoints
  • Session management issues (predictable IDs, no expiry, no rotation)
  • OAuth flow vulnerabilities (missing state parameter, open redirects, token leaks in URLs)
  • Privilege escalation paths (account switching without ownership validation)
  • JWT issues (none algorithm, weak secrets, missing expiry)

Input Validation

  • SQL/GAQL injection (unparameterized user input in queries)
  • Path traversal (.. in file paths, missing prefix validation)
  • CORS misconfiguration (wildcard * origins in production)
  • XSS vectors in user-generated content (unsanitized HTML rendering)
  • SSRF (user-controlled URLs in server-side requests)
  • Command injection (user input in shell commands)

Error Handling

  • Internal details leaked in error messages (e.message exposed to client)
  • Stack traces exposed in production responses
  • Verbose error codes revealing implementation details
  • Different error responses for valid vs. invalid users (user enumeration)

Encryption

  • Weak key derivation (string padding instead of PBKDF2/scrypt/argon2)
  • Fallback to insecure defaults (e.g., using session ID as encryption key)
  • Missing encryption for sensitive data at rest
  • HTTP instead of HTTPS for sensitive endpoints

Rate Limiting

  • Missing rate limits on authentication endpoints
  • No abuse prevention on public API endpoints
  • No per-IP or per-user throttling on expensive operations

Read the full file on GitHub · 82 lines

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. 9d ago First seen · 82 lines · 47 tokens per session scan A 35066cb3a9f4

Subscribe to this mod's changes

security-auditor is a skill published in the GitHub repository itallstartedwithaidea/google-ads-gemini-extension (8 stars, last pushed 1mo ago), licensed MIT. It adds 47 tokens to every session and 715 once invoked, about $0.0002 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 2026-08-31.

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