review-design

review-design is a skill for Claude Code from patforna/auto-task. It costs 25 tokens per session (668 once invoked), scanned A, original, MIT.

A read-only review for checking whether a user-interface or visual design change matches its specification.

In plain words
What is it for?
Use it to compare rendered UI details such as layout, spacing, colours, contrast, and design tokens against a written design.
Why use it?
It finds visual differences without altering the code. It requires Chrome DevTools MCP, which lets the agent inspect and measure a running web page.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the at plugin — 13 skills shipped together

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.

agentmods
npx agentmods add skills/patforna/auto-task/review-design
Any agent
npx skills add patforna/auto-task --skill review-design
Clone the repo
git clone --depth 1 https://github.com/patforna/auto-task

Made for: Claude Code.

Or install at, the plugin that ships this one along with the rest of its 13 skills.

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 review-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/patforna/auto-task/review-design.svg)](https://agentmods.dev/skills/patforna/auto-task/review-design)
Your own site
<a href="https://agentmods.dev/skills/patforna/auto-task/review-design"><img src="https://agentmods.dev/badge/skills/patforna/auto-task/review-design.svg" alt="Measured on agentmods" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 668 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00025 $0.00668
Opus 5 $0.00013 $0.00334
Sonnet 5 $0.00005 $0.00134
Haiku 4.5 $0.00003 $0.00067

Measured 5d ago against content hash b45e28b89252, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

review-design 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 5d 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.

skills/review-design/SKILL.md · 51 lines

How it starts

The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Review Design

Usage

/at:review-design [the change + its design intent]

Prerequisite

Requires chrome-devtools MCP. If not available, do not proceed and fail loudly.

Goal

Verify a design / UI change matches the specified design.

Guidance (DO NOT IGNORE!)

  • Skip entirely for changes that don't alter rendered output.
  • Read-only: surface findings, never fix.

Step 1: Start the App

Start the app on deterministic fixture data and drive it via the chrome-devtools MCP.

The serve command comes from the project config (.claude/auto-task.config.md, design-review section) — e.g. a recipe that serves test fixtures. If no such entry exists, look for an obvious fixture-backed dev-server; if none, fail loudly — do not review against live/non-deterministic data.

Prefer a serve command that binds free ports (so parallel sessions don't collide) and navigate to the URL it prints — don't assume a fixed port.

Step 2: Verify

  1. Measure, Don't Eyeball. Read DOM geometry / computed styles (getBoundingClientRect, colour, contrast) and compare to the spec.
  2. Check Token Fidelity. Read the diff, not just the render — flag hardcoded literals where a token was specified (e.g. #3B82F6 instead of var(--color-primary) or a bg-primary utility). Computed styles collapse the token name, so this is a source-level check.
  3. Confirm the Gestalt with a screenshot against the design reference. Save the frames — one per state×theme the change actually touches, plus open interaction states (tooltip/popover) — under .design-review/<task-or-slug>/ (ensure it's gitignored) so the human can review them without re-booting the app. The chrome-devtools screenshot tool only writes within the repo workspace root, so save there even when reviewing a worktree (not under the worktree path).
  4. Exercise Interaction States (hover / focus / open) with real input (real key/click events) — synthetic dispatch hides state-dependent bugs. Also cover the data / UI states the design defines (disabled / error / empty / loading), driven via the fixtures.
  5. Check for Unguarded Invariants — load-bearing geometry / colour with no e2e assertion.

Read the full file on GitHub · 51 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. 5d ago First seen · 51 lines · 25 tokens per session scan A b45e28b89252

Subscribe to this mod's changes

review-design is a skill published in the GitHub repository patforna/auto-task (3 stars, last pushed yesterday), licensed MIT. It adds 25 tokens to every session and 668 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.