# reviewing-interface-quality

Audits an existing interface with screenshots, browser data, and CSS values. Use it before shipping or when a page feels unfinished.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 352 installs · ★ 15
- Author: osmontero
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/osmontero/opencode-skills/tree/HEAD/skills/reviewing-interface-quality/SKILL.md
- Updated: 2026-10-23
- HTML: https://affpapa.org/en/nevibecode/skills/reviewing-interface-quality

## What it does

The skill starts with rendered evidence instead of guesses from source code. It calls for screenshots at 1440px and 390px, an overflow check, console errors, and computed CSS values. This exposes clipped text, collapsed layouts, broken states, and inconsistent styling.

Its review covers first impression, system consistency, typography, layout, and responsive behavior. The supplied example uses Python with Playwright against `http://localhost:5173`; a static pass uses `grep` commands. Each finding must identify the location, explain the cause, and give a concrete replacement value. When rendering is impossible, visual findings are marked `PLAUSIBLE` rather than `CONFIRMED`.

Without a working runtime, visual findings cannot be marked `CONFIRMED`. Check that before starting the audit.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add osmontero/opencode-skills --skill reviewing-interface-quality -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/reviewing-interface-quality/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/reviewing-interface-quality/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add osmontero/opencode-skills --skill reviewing-interface-quality -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/reviewing-interface-quality/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add osmontero/opencode-skills --skill reviewing-interface-quality -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/reviewing-interface-quality/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install osmontero/opencode-skills reviewing-interface-quality
```

2. **Manually: put the files in place**
- File: `.github/skills/reviewing-interface-quality/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add osmontero/opencode-skills --skill reviewing-interface-quality -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/osmontero/opencode-skills --path skills/reviewing-interface-quality
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/reviewing-interface-quality/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add osmontero/opencode-skills --skill reviewing-interface-quality -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/osmontero/opencode-skills/tree/HEAD/skills/reviewing-interface-quality/SKILL.md

## When to use it
- check the interface at 1440px and 390px
- detect horizontal page overflow
- compare font sizes, spacing, and corner radii
- find browser console errors
- turn each issue into a concrete fix

## Example prompts
- Review the interface at `http://localhost:5173` at 1440px and 390px.
- Check for overflow, console errors, and inconsistent computed CSS values.
- Write a report with each issue’s location, cause, and replacement value.

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: da91771795bc1a28.

BEGIN THIRD-PARTY FILE da91771795bc1a28
````text
---
name: reviewing-interface-quality
description: Use when asked to review, critique, audit, or improve an existing user interface — "review this UI", "why does this look generic", "make this more polished", "design feedback", "does this look AI-generated", "audit this page". Also use as the final gate before shipping any frontend work, and when a UI renders correctly but feels unfinished, cheap, or inconsistent without an obvious cause.
---

# Reviewing Interface Quality

## Overview

"Make it look better" is not actionable. Interface quality problems have specific causes — an unenforced spacing scale, hierarchy varying on four dimensions at once, a state that was never designed — and a review is only useful if it names the cause and the fix.

**Core principle:** Every finding names a location, a cause, and a concrete replacement value. "The spacing feels off" is not a finding. "`.card` uses `padding: 14px` while everything else uses the 8px scale — change to `var(--space-s)`" is.

**Companion skills:** `designing-frontend-interfaces` (visual), `designing-user-experience` (behavior), `building-accessible-interfaces` (access). This skill audits against all three.

## The Iron Law

```
NO FINDING WITHOUT EVIDENCE YOU ACTUALLY GATHERED
```

Reviewing an interface means looking at it. Reading the source and inferring how it renders is not a review — it misses exactly the class of defect a review exists to catch: overflow, collapsed layouts, invisible text, layout shift, broken states.

**Minimum evidence before writing a single finding:** a screenshot at 1440px, a screenshot at 390px, and the computed values for anything you are about to call inconsistent.

## Checklist

1. **Gather evidence** — render at two widths, capture DOM and computed styles
2. **Pass 1: First impression** — 5 seconds, before analysis
3. **Pass 2: System consistency** — the highest-yield pass
4. **Pass 3: Typography**
5. **Pass 4: Layout and responsive**
6. **Pass 5: States and behavior**
7. **Pass 6: Accessibility**
8. **Pass 7: Motion and performance**
9. **Report** — severity-graded, each with location, cause, fix

## Step 1: Gather Evidence

```python
from playwright.sync_api import sync_playwright
URL = "http://localhost:5173"   # or file:///abs/path/index.html

with sync_playwright() as p:
    b = p.chromium.launch()
    pg = b.new_page(viewport={"width": 1440, "height": 900})
    errors = []
    pg.on("console", lambda m: m.type == "error" and errors.append(m.text))
    pg.goto(URL); pg.wait_for_load_state("networkidle")
    pg.screenshot(path="/tmp/rev-desktop.png", full_page=True)

    # Horizontal overflow — always a bug
    print("OVERFLOW:", pg.evaluate("""() => [...document.querySelectorAll('*')]
````
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