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 skills add quangpl/browser-extension-skills --skill extension-reviewgit clone --depth 1 https://github.com/quangpl/browser-extension-skillsWrote 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.
[](https://agentmods.dev/skills/quangpl/browser-extension-skills/extension-review)<a href="https://agentmods.dev/skills/quangpl/browser-extension-skills/extension-review"><img src="https://agentmods.dev/badge/skills/quangpl/browser-extension-skills/extension-review/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.
<a href="https://agentmods.dev/skills/quangpl/browser-extension-skills/extension-review"><img src="https://agentmods.dev/badge/skills/quangpl/browser-extension-skills/extension-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00042 | $0.00778 |
| Opus 5 | $0.00021 | $0.00389 |
| Sonnet 5 | $0.00008 | $0.00156 |
| Haiku 4.5 | $0.00004 | $0.00078 |
Grade A, and why
extension-review 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 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.
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.
How it starts
The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Extension Review (Pre-Submission Scanner)
Scan extension source code and predict Chrome Web Store rejection risks. Generate a clear report.
Reference: https://developer.chrome.com/docs/webstore/troubleshooting
Workflow (Execute This)
Step 1: Ask report format
Ask user: Markdown or HTML report? (default: Markdown)
Step 2: Locate and scan extension
# Find extension root
ls manifest.json wxt.config.ts plasmo.config.ts package.json 2>/dev/null
Step 3: Run all checks
Execute these scans in order (see references/scan-checklist.md for grep patterns):
| # | Check | Violation Code | Severity |
|---|---|---|---|
| 1 | Remote code execution (eval, external scripts) | Blue Argon | CRITICAL |
| 2 | Code obfuscation (base64, char encoding) | Red Titanium | CRITICAL |
| 3 | Excessive/unused permissions | Purple Potassium | HIGH |
| 4 | Missing privacy policy | Purple Lithium | HIGH |
| 5 | Missing metadata (icons, description, screenshots) | Yellow Zinc | HIGH |
| 6 | Single purpose violation | Red Magnesium | HIGH |
| 7 | Deceptive behavior (description ≠ functionality) | Red Nickel | HIGH |
| 8 | Insecure data transmission (HTTP) | Purple Copper | HIGH |
| 9 | Keyword stuffing in manifest | Yellow Argon | MEDIUM |
| 10 | Minimum functionality check | Yellow Potassium | MEDIUM |
| 11 | Undisclosed affiliate links | Grey Titanium | MEDIUM |
| 12 | Cryptocurrency mining code | Grey Silicon | CRITICAL |
| 13 | Copyright circumvention (download helpers) | Blue Zinc | CRITICAL |
| 14 | Notification spam patterns | Yellow Nickel | MEDIUM |
| 15 | Data collection without consent | Purple Nickel | HIGH |
Step 4: Generate report
Output report using template in references/report-template.md.
Report structure per issue:
## Issue: [Name]
- **Severity**: CRITICAL / HIGH / MEDIUM
- **Violation Code**: [Chrome code, e.g. Blue Argon]
- **Root Cause**: [What in your code triggers this]
- **File(s)**: [Exact file paths and line numbers]
- **Solution**: [Step-by-step fix]
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 11d ago First seen · 89 lines · 42 tokens per session scan A 44d606385519
extension-review is a skill published in the GitHub repository quangpl/browser-extension-skills (49 stars, last pushed 3mo ago), licensed MIT. It adds 42 tokens to every session and 778 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 2026-08-30.
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