fallow: Skill for Claude Code

.agents/skills/browser-smoke-review/SKILL.md

browser-smoke-review is a skill for Claude Code, Codex from fallow-rs/fallow. It costs 49 tokens per session (174 once invoked), scanned A, original, MIT.

A browser-based checker for web pages, preview links, and rendered documents. It uses automated browsing to inspect what users see and capture screenshots.

In plain words
What is it for?
It is for checking documentation sites, preview deployments, rendered Markdown or reports, and other web-facing pages.
Why use it?
It helps find visible errors, browser-console problems, and failed network requests that ordinary code review may miss.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is fallow-rs/fallow's own configuration. It tells Claude Code and Codex how to work on fallow itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything fallow configures →

About the project

Fallow is a command-line static-analysis tool that builds a dependency graph of TypeScript and JavaScript code to identify unused code, duplication, circular dependencies, complexity hotspots, boundary violations, and styling drift. It is for developers reviewing codebases and verifying changes, with catalogue entries that add agent, editor, and workflow integrations.

fallow-rs/fallow · 4,461 stars · on GitHub · docs.fallow.tools

Reuse

Borrowing it

Nothing to install: this file belongs to fallow-rs/fallow. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/fallow-rs/fallow/main/.agents/skills/browser-smoke-review/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/fallow-rs/fallow

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 browser-smoke-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/fallow-rs/fallow/browser-smoke-review/github.svg)](https://agentmods.dev/skills/fallow-rs/fallow/browser-smoke-review)
Your own site
<a href="https://agentmods.dev/skills/fallow-rs/fallow/browser-smoke-review"><img src="https://agentmods.dev/badge/skills/fallow-rs/fallow/browser-smoke-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.

agentmods 80×15 button for browser-smoke-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/fallow-rs/fallow/browser-smoke-review"><img src="https://agentmods.dev/badge/skills/fallow-rs/fallow/browser-smoke-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 174 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00049 $0.00174
Opus 5 $0.00024 $0.00087
Sonnet 5 $0.00010 $0.00035
Haiku 4.5 $0.00005 $0.00017

Measured 9d ago against content hash 13567d45ee5d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

browser-smoke-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 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.

.agents/skills/browser-smoke-review/SKILL.md · 25 lines

What it actually says

Browser Smoke Review

Use Playwright/browser tooling for web-facing checks.

Good fits:

  • docs site checks
  • preview deployment inspection
  • rendered markdown or report review
  • screenshot capture for review
  • browser console and network smoke tests

Workflow:

  1. Open the target URL or local preview.
  2. Inspect the page structure and visible content.
  3. Capture screenshots when useful.
  4. Check console errors and obvious network failures.
  5. Report concrete UX or correctness issues with page/path context.

If the user wants product feedback rather than just smoke testing, combine with panel-review.

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 · 25 lines · 49 tokens per session scan A 13567d45ee5d

Subscribe to this mod's changes

browser-smoke-review is a skill published in the GitHub repository fallow-rs/fallow (4,461 stars, last pushed yesterday), licensed MIT. It adds 49 tokens to every session and 174 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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