visual-testing

visual-testing is a skill for Claude Code from ironbee-ai/ironbee-devtools-skills. It costs 50 tokens per session (1,783 once invoked), scanned A, original, MIT.

A UI verification toolkit that captures screenshots and compares an implemented interface with a design or Figma file. It also checks responsive layouts and visual regressions, meaning unintended appearance changes.

In plain words
What is it for?
Use it to capture pages or elements, compare them with designs, test responsive behavior, and check for styling or layout regressions.
Why use it?
It helps find differences between the intended design and what users actually see across screen sizes.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

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/ironbee-ai/ironbee-devtools-skills/visual-testing
Any agent
npx skills add ironbee-ai/ironbee-devtools-skills --skill visual-testing
Clone the repo
git clone --depth 1 https://github.com/ironbee-ai/ironbee-devtools-skills

Made for: Claude Code.

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-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/ironbee-ai/ironbee-devtools-skills/visual-testing.svg)](https://agentmods.dev/skills/ironbee-ai/ironbee-devtools-skills/visual-testing)
Your own site
<a href="https://agentmods.dev/skills/ironbee-ai/ironbee-devtools-skills/visual-testing"><img src="https://agentmods.dev/badge/skills/ironbee-ai/ironbee-devtools-skills/visual-testing.svg" alt="Measured on agentmods" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,783 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 $0.00050 $0.01783
Opus 5 $0.00025 $0.00892
Sonnet 5 $0.00010 $0.00357
Haiku 4.5 $0.00005 $0.00178

Measured 6d ago against content hash 3363c1aafef8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

visual-testing 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 6d 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/visual-testing/SKILL.md · 226 lines

How it starts

The opening of the file, as written. The whole thing — 226 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Visual Testing Skill

Perform visual testing, UI verification, and design comparison using screenshots, responsive testing, and Figma integration.

When to Use

This skill activates when:

  • User wants to verify UI appearance
  • User asks to compare page with design or Figma
  • User needs responsive design testing
  • User wants to check for visual regressions
  • User mentions UI bugs or styling issues
  • User asks about design parity
  • User wants to validate implementation against design

Capabilities

Screenshot Capture

ironbee-browser-devtools-cli content take-screenshot --name "homepage"
ironbee-browser-devtools-cli content take-screenshot --name "element" --selector ".hero"
ironbee-browser-devtools-cli content take-screenshot --name "fullpage" --full-page
ironbee-browser-devtools-cli content take-screenshot --name "photo" --type jpeg --quality 80
ironbee-browser-devtools-cli content save-as-pdf --name "page" --format A4

Annotated Screenshot (ref labels)

Overlay numbered labels [1],[2] on interactive elements. Call a11y take-aria-snapshot first.

ironbee-browser-devtools-cli a11y take-aria-snapshot
ironbee-browser-devtools-cli content take-screenshot --annotate --name "annotated"
ironbee-browser-devtools-cli content take-screenshot --annotate --annotate-content --name "with-headings"

Responsive Testing

ironbee-browser-devtools-cli interaction resize-viewport --width 375 --height 667   # Mobile
ironbee-browser-devtools-cli interaction resize-viewport --width 768 --height 1024  # Tablet
ironbee-browser-devtools-cli interaction resize-viewport --width 1920 --height 1080 # Desktop

Figma Design Comparison

ironbee-browser-devtools-cli figma compare-page-with-design \
  --figma-file-key "ABC123xyz" \
  --figma-node-id "12:34"

ironbee-browser-devtools-cli figma compare-page-with-design \
  --figma-file-key "ABC123xyz" \
  --figma-node-id "12:34" \
  --selector ".hero-section"

ironbee-browser-devtools-cli figma compare-page-with-design \
  --figma-file-key "ABC123xyz" \
  --figma-node-id "12:34" \
  --mssim-mode semantic

Read the full file on GitHub · 226 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. 6d ago First seen · 226 lines · 50 tokens per session scan A 3363c1aafef8

Subscribe to this mod's changes

visual-testing is a skill published in the GitHub repository ironbee-ai/ironbee-devtools-skills (3 stars, last pushed 1mo ago), licensed MIT. It adds 50 tokens to every session and 1,783 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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