visual-regression

visual-regression is a plugin for Claude Code from pnakhat/qa-ai-repo. Its manifest loads nothing; the 1 skill, 1 agent it bundles cost 194 tokens per session together, scanned A, original, MIT.

A visual testing setup for Playwright that compares current screenshots with approved reference images. It controls changing factors such as animations, time, fonts, data, and screen size so differences are easier to trust.

In plain words
What is it for?
Use it to create and review pixel or perceptual screenshot checks, mask dynamic areas such as timestamps, tune difference limits, and keep screenshot baselines consistent with CI.
Why use it?
It finds unintended changes to a page or component that ordinary functional tests may miss, while reducing noisy differences caused by nondeterministic rendering.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to create and review pixel or perceptual screenshot checks, mask dynamic areas such as timestamps, tune difference limits, and keep screenshot baselines consistent with CI.

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Install in Claude Code
/plugin marketplace add pnakhat/qa-ai-repo
/plugin install visual-regression
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.

Clone the repo
git clone --depth 1 https://github.com/pnakhat/qa-ai-repo

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-regression

README.md
[![agentmods](https://agentmods.dev/badge/plugins/pnakhat/qa-ai-repo/visual-regression/github.svg)](https://agentmods.dev/plugins/pnakhat/qa-ai-repo/visual-regression)
Your own site
<a href="https://agentmods.dev/plugins/pnakhat/qa-ai-repo/visual-regression"><img src="https://agentmods.dev/badge/plugins/pnakhat/qa-ai-repo/visual-regression/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 visual-regression

Your own site · 80×15
<a href="https://agentmods.dev/plugins/pnakhat/qa-ai-repo/visual-regression"><img src="https://agentmods.dev/badge/plugins/pnakhat/qa-ai-repo/visual-regression.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill, 1 agent cost 194 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

visual-regression 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 10d 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.

visual-regression/.claude-plugin/plugin.json · 18 lines

What it actually says

{
  "name": "visual-regression",
  "displayName": "Visual Regression Testing",
  "version": "0.10.0",
  "description": "Set up reliable perceptual and pixel screenshot diffing with Playwright's `toHaveScreenshot` that catches real visual bugs without drowning teams in false positives. Determinism comes first: disable animations and transitions, freeze the clock and seed or mock data, pin fonts, viewport, and device-scale factor, and generate baselines in a container that matches CI so anti-aliasing lines up. Tunes thresholds (`maxDiffPixelRatio`, `maxDiffPixels`) starting strict and loosening only with justification, masks dynamic regions like timestamps and avatars, and right-sizes scope to the smallest meaningful region — component snapshots over full-page goldens. Treats every diff as a question to triage, not an automatic failure, and reviews baseline changes deliberately. Enforces guardrails against committing laptop-generated baselines, zero-threshold subpixel noise, blind `--update-snapshots`, and snapshotting a whole page to check one component.",
  "author": {
    "name": "pnakhat"
  },
  "homepage": "https://github.com/pnakhat/qa-ai-repo/tree/main/visual-regression",
  "repository": "https://github.com/pnakhat/qa-ai-repo",
  "license": "MIT",
  "keywords": [
    "qa",
    "testing",
    "visual-regression"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 skill, 1 agent travel with it, and installing the plugin installs all of them — 194 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. 10d ago Changed cadfcdfbc94d
  2. 11d ago First seen · 18 lines scan A 6dfe92d51db5

Subscribe to this mod's changes

visual-regression is a plugin published in the GitHub repository pnakhat/qa-ai-repo (2 stars, last pushed 10d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-10-06.