chrome-ext-reviewer

chrome-ext-reviewer is an agent for Claude Code from RadOrigin-LLC/RAD-Claude-Skills. It costs 320 tokens per session (1,992 once invoked), scanned B, original, Apache-2.0.

A code reviewer for Chrome extensions, which are browser add-ons that can change how Chrome works. It checks security, design, permissions, messaging, and Chrome Web Store requirements.

In plain words
What is it for?
Use it after building an extension feature, before a code review, or when checking whether an extension is ready for the Chrome Web Store.
Why use it?
It helps find runtime bugs, security weaknesses, unnecessary access requests, and issues that could cause the extension to be rejected.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the rad-chrome-extension plugin — 9 skills, 1 agent shipped together

Good fit Use it after building an extension feature, before a code review, or when checking whether an extension is ready for the Chrome Web Store.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/radorigin-llc/rad-claude-skills/chrome-ext-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/RadOrigin-LLC/RAD-Claude-Skills

Made for: Claude Code.

Or install rad-chrome-extension, the plugin that ships this one along with the rest of its 9 skills, 1 agent.

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 chrome-ext-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/radorigin-llc/rad-claude-skills/chrome-ext-reviewer/github.svg)](https://agentmods.dev/agents/radorigin-llc/rad-claude-skills/chrome-ext-reviewer)
Your own site
<a href="https://agentmods.dev/agents/radorigin-llc/rad-claude-skills/chrome-ext-reviewer"><img src="https://agentmods.dev/badge/agents/radorigin-llc/rad-claude-skills/chrome-ext-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 chrome-ext-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/radorigin-llc/rad-claude-skills/chrome-ext-reviewer"><img src="https://agentmods.dev/badge/agents/radorigin-llc/rad-claude-skills/chrome-ext-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 320 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,992 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00320 $0.01992
Opus 5 $0.00160 $0.00996
Sonnet 5 $0.00064 $0.00398
Haiku 4.5 $0.00032 $0.00199

Measured 11d ago against content hash 7bf287833c90, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade B, and why

chrome-ext-reviewer scanned grade B 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 11d 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.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

- `new Function(` — string-to-code execution - `setTimeout(` or `setInterval(` with string first argument - `innerHTML` with unsanitized input — XSS vector - `document.write(` — unsafe injection sink - Remote `<script>`

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

archive/plugins/rad-chrome-extension/agents/chrome-ext-reviewer.md · 217 lines

How it starts

The opening of the file, as written. The whole thing — 217 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a Chrome Extension code quality auditor specializing in MV3 security, architecture correctness, permission minimization, messaging safety, and Chrome Web Store compliance. You apply engineering standards from official Chrome for Developers documentation, WXT framework best practices, Chrome Web Store program policies, and community-vetted patterns.

Your goal is to identify issues that cause real runtime failures, security vulnerabilities, or CWS rejections — not stylistic preferences. Filter out low-confidence findings. Only report issues you are confident about.

Core Responsibilities

  1. MV3 Security Compliance — Verify no eval, no remote code, proper CSP, content script isolation
  2. Permission Minimization — Flag over-requested permissions, suggest narrower alternatives
  3. Service Worker Correctness — Verify top-level listener registration, no global state, no timers
  4. Messaging Safety — Check type safety, async response handling, trust boundaries
  5. Storage Correctness — Verify appropriate storage mechanism, quota awareness, data safety
  6. CWS Readiness — Flag patterns that trigger known rejection codes

Review Process

Step 1: Gather Context

  • Read manifest.json or wxt.config.ts to understand extension structure
  • Check package.json for framework (WXT, CRXJS, Plasmo, or manual)
  • Identify all extension contexts (background, content scripts, popup, side panel, options)
  • Note the extension's purpose and declared permissions

Step 2: Security Scan

Search for and evaluate:

Critical (always report — CWS rejection risk):

  • eval( — banned in MV3 extension pages
  • new Function( — string-to-code execution
  • setTimeout( or setInterval( with string first argument
  • innerHTML with unsanitized input — XSS vector
  • document.write( — unsafe injection sink
  • Remote <script> tags or dynamically fetched JavaScript
  • fetch() to untrusted URLs from service worker without validation
  • Hardcoded API keys, tokens, or secrets in source code

Read the full file on GitHub · 217 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. 11d ago First seen · 217 lines · 320 tokens per session scan B 7bf287833c90

Subscribe to this mod's changes

chrome-ext-reviewer is an agent published in the GitHub repository RadOrigin-LLC/RAD-Claude-Skills (5 stars, last pushed 24d ago), licensed Apache-2.0. It adds 320 tokens to every session and 1,992 once invoked, about $0.0016 per session on Opus 5. A static security scan graded it B with 1 finding (downloads and executes remote code). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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