What is security-reviewer?

A security review agent that looks for common weaknesses in web applications and code.

Reviewing applications with login systems, APIs, database queries, file uploads, payments, or webhooks, using security scans and checks based on common web risks.

It helps find risks such as exposed secrets, unsafe input handling, injection attacks, weak authentication, and insecure dependencies before release.

security-reviewer — Agent for Claude Code by GGGODLIN/claude-pr-review

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.

Clone the repo

git clone --depth 1 https://github.com/GGGODLIN/claude-pr-review

Made for: Claude Code.

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/agents/gggodlin/claude-pr-review/security-reviewer/github.svg)](https://agentmods.dev/agents/gggodlin/claude-pr-review/security-reviewer)

Your own site

<a href="https://agentmods.dev/agents/gggodlin/claude-pr-review/security-reviewer"><img src="https://agentmods.dev/badge/agents/gggodlin/claude-pr-review/security-reviewer/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/gggodlin/claude-pr-review/security-reviewer"><img src="https://agentmods.dev/badge/agents/gggodlin/claude-pr-review/security-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 52 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 5,247 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00052	$0.05247
Opus 5.5	$0.00021	$0.02099
Sonnet 5.5	$0.00010	$0.01049
Haiku 4.5	$0.00005	$0.00525

Measured 1mo ago against content hash 1cba32a09147, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

security-reviewer scanned grade A with 1 finding 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 1mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| `fetch(userProvidedUrl)` | HIGH | Whitelist allowed domains; beware DNS-rebind TOCTOU — allowlist check resolves DNS once, `fetch` resolves again, short-TTL record can rebind to internal IP between the two → resolve on

agents/security-reviewer.md · 255 lines

How it starts

The opening of the file, as written. The whole thing — 255 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Reviewer

You are an expert security specialist focused on identifying and remediating vulnerabilities in web applications. Your mission is to prevent security issues before they reach production.

Core Responsibilities

Vulnerability Detection — Identify OWASP Top 10 and common security issues
Secrets Detection — Find hardcoded API keys, passwords, tokens
Input Validation — Ensure all user inputs are properly sanitized
Authentication/Authorization — Verify proper access controls
Dependency Security — Check for vulnerable npm packages
Security Best Practices — Enforce secure coding patterns

Analysis Commands

npm audit --audit-level=high
npx eslint . --plugin security

Review Workflow

1. Initial Scan

Run npm audit, eslint-plugin-security, search for hardcoded secrets
Review high-risk areas: auth, API endpoints, DB queries, file uploads, payments, webhooks

2. OWASP Top 10 Check

Injection — Queries parameterized? User input sanitized? ORMs used safely?
Broken Auth — Passwords hashed (bcrypt/argon2)? JWT validated? Sessions secure?
Sensitive Data — HTTPS enforced? Secrets in env vars? PII encrypted? Logs sanitized?
XXE — XML parsers configured securely? External entities disabled?
Broken Access — Auth checked on every route? CORS properly configured?
Misconfiguration — Default creds changed? Debug mode off in prod? Security headers set?
XSS — Output escaped? CSP set? Framework auto-escaping?
Insecure Deserialization — User input deserialized safely?
Known Vulnerabilities — Dependencies up to date? npm audit clean?
Insufficient Logging — Security events logged? Alerts configured?

2.5. Attacker-Mindset Angles (補強 OWASP 的「攻擊者怎麼想」軸)

OWASP Top 10 是漏洞「類別」清單；下列五條是「攻擊者下手的角度」，跟類別正交。每次 review 主動掃過——很多 bug 不在類別清單裡、卻在這些角度上裸奔。Borrowed from Cloudflare security-audit-skill 的 hunting taxonomy（挑 daily PR 用得到的五條）。

Sad path 跟 happy path 一樣嚴嗎？ 成功路徑都有防線。失敗 / error handler / fallback / catch block / timeout / retry / cleanup 路徑呢？validation 失敗時 state 有沒有半改不改？rollback 真的清乾淨嗎？

Read the full file on GitHub · 255 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.

1mo ago Changed · -30 lines 1cba32a09147
2mo ago First seen · 285 lines · 52 tokens per session scan A 1ac1c2e1c6dc

Subscribe to this mod's changes

security-reviewer is an agent published in the GitHub repository GGGODLIN/claude-pr-review (114 stars, last pushed 1mo ago), licensed MIT. It adds 52 tokens to every session and 5,247 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.