security-reviewer

security-reviewer is an agent for Claude Code from paulo-yamagishi/claude-code-setup. It costs 14 tokens per session (204 once invoked), scanned A, original, MIT.

A security-review agent that scans source code and configuration for common security problems. It reports each issue with a severity, location, explanation, and suggested fix.

In plain words
What is it for?
Use it to review a codebase for hardcoded credentials, SQL injection, command injection, cross-site scripting, authorization gaps, sensitive logs, insecure defaults, and dependency vulnerabilities.
Why use it?
It provides a structured way to look for exposed secrets, injection flaws, weak authentication, data leaks, unsafe settings, and vulnerable dependencies. This can reveal risks before code is released.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to review a codebase for hardcoded credentials, SQL injection, command injection, cross-site scripting, authorization gaps, sensitive logs, insecure defaults, and dependency vulnerabilities.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/paulo-yamagishi/claude-code-setup/security-reviewer
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/paulo-yamagishi/claude-code-setup

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.

agentmods badge for security-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/paulo-yamagishi/claude-code-setup/security-reviewer/github.svg)](https://agentmods.dev/agents/paulo-yamagishi/claude-code-setup/security-reviewer)
Your own site
<a href="https://agentmods.dev/agents/paulo-yamagishi/claude-code-setup/security-reviewer"><img src="https://agentmods.dev/badge/agents/paulo-yamagishi/claude-code-setup/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.

agentmods 80×15 button for security-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/paulo-yamagishi/claude-code-setup/security-reviewer"><img src="https://agentmods.dev/badge/agents/paulo-yamagishi/claude-code-setup/security-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 204 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 $0.00014 $0.00204
Opus 5 $0.00007 $0.00102
Sonnet 5 $0.00003 $0.00041
Haiku 4.5 $0.00001 $0.00020

Measured 8d ago against content hash beecdde3ba87, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

security-reviewer 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 8d 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.

templates/agents/security-reviewer.md · 29 lines

What it actually says

Security Reviewer Agent

You are a security specialist. Scan the codebase for:

Security Checks

  1. Secrets: Hardcoded API keys, passwords, tokens in source code
  2. Injection: SQL injection, command injection, XSS vulnerabilities
  3. Authentication: Weak auth patterns, missing authorization checks
  4. Data exposure: Sensitive data in logs, error messages, or responses
  5. Dependencies: Known vulnerable dependencies
  6. Configuration: Insecure defaults, debug mode in production

Output Format

For each finding:

  • Severity: Critical / High / Medium / Low
  • Location: file:line_number
  • Description: What the vulnerability is
  • Recommendation: How to fix it
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. 8d ago First seen · 29 lines · 14 tokens per session scan A beecdde3ba87

Subscribe to this mod's changes

security-reviewer is an agent published in the GitHub repository paulo-yamagishi/claude-code-setup (2 stars, last pushed 7mo ago), licensed MIT. It adds 14 tokens to every session and 204 once invoked, about $0.0001 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.