visual-qa

visual-qa is a skill for Claude Code, Codex from Coinyak/onchainai. It costs 52 tokens per session (2,196 once invoked), scanned A, original, MIT.

A visual review workflow that uses screenshots and vision models to check whether a web interface matches its intended design. It looks for issues such as spacing, alignment, colors, responsive behavior, and accessibility.

In plain words
What is it for?
Use it to review a design, compare a rendered page with a mockup, or perform visual quality checks after building a component.
Why use it?
It finds visible problems that may be missed by reading code alone, especially before a page or component is shipped.

Skill for Claude CodeCodex

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/coinyak/onchainai/visual-qa
Any agent
npx skills add Coinyak/onchainai --skill visual-qa
Clone the repo
git clone --depth 1 https://github.com/Coinyak/onchainai

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 visual-qa

README.md
[![agentmods](https://agentmods.dev/badge/skills/coinyak/onchainai/visual-qa.svg)](https://agentmods.dev/skills/coinyak/onchainai/visual-qa)
Your own site
<a href="https://agentmods.dev/skills/coinyak/onchainai/visual-qa"><img src="https://agentmods.dev/badge/skills/coinyak/onchainai/visual-qa.svg" alt="Measured on agentmods" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,196 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 $0.00052 $0.02196
Opus 5 $0.00026 $0.01098
Sonnet 5 $0.00010 $0.00439
Haiku 4.5 $0.00005 $0.00220

Measured 4d ago against content hash 98eca5078b4d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

visual-qa 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 4d 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/visual-qa/SKILL.md · 329 lines

How it starts

The opening of the file, as written. The whole thing — 329 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Visual QA

Use vision models to self-review screenshots against design intent. Catch spacing issues, alignment problems, color inconsistencies, responsive bugs, and accessibility gaps before shipping.

When to Use

  • User asks to "review this design" or "check this screenshot"
  • After building a page/component, before shipping
  • User wants to compare implementation vs mockup/reference
  • User asks "does this look right?" or "what's off about this?"
  • Automated design QA step in a build workflow

Core Philosophy

  • Screenshot first, then critique. Always look at the actual rendered output, not just the code.
  • Be specific. "The spacing looks off" is useless. "The gap between the heading and paragraph is 32px but should be 16px based on the surrounding spacing rhythm" is useful.
  • Prioritize impact. Not every pixel matters. Focus on what users will actually notice.
  • Reference the intent. Compare against design tokens, mockups, or stated design goals.

How to Review

Step 1: Capture the Screenshot

Use one of these methods to get a screenshot:

Via browser tool:

browser: screenshot (captures the current page)

Via node screen capture (if available):

node: screen_record

Via Peekaboo (macOS):

exec: peekaboo screenshot

User-provided: The user may paste/attach a screenshot directly.

Step 2: Analyze with Vision

Use the image tool to analyze the screenshot:

image: [path or URL to screenshot]
prompt: "Review this UI screenshot for design quality..."

Step 3: Structured Review

Analyze the screenshot against these categories (in priority order):


Review Categories

1. Layout & Spacing

Check for:

  • Consistent spacing rhythm (is everything on the spacing grid?)
  • Alignment — are elements that should be aligned actually aligned?
  • Padding consistency within similar components
  • Container widths and max-widths
  • Responsive behavior (if multiple viewport screenshots available)

Read the full file on GitHub · 329 lines

Files

What ships with it

1 file 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.

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. 4d ago First seen · 329 lines · 52 tokens per session scan A 98eca5078b4d

Subscribe to this mod's changes

visual-qa is a skill published in the GitHub repository Coinyak/onchainai (1 stars, last pushed 1mo ago), licensed MIT. It adds 52 tokens to every session and 2,196 once invoked, about $0.0003 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.

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