Vlmkit

Q: What is a Claude Code skill and how does the Vlmkit skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Vlmkit is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: automation · Last updated: 2026-05-27

type:audit

Entry-point for the `@mizchi/vlmkit` toolkit — VLM-driven frontend kit covering visual regression (snapshot / diff / regression-watch), markup synthesis from screenshots, design-token / theme / a11y / i18n audits, and a 2-stage VLM + LLM CSS auto-repair loop. Use when a coding agent has edited HTML/CSS and needs to know whether the visible output changed, where it changed, and which CSS properties drove the change — or when the task is markup-from-image / token / theme audit / fix-loop driven by VLM. This skill orients you to the 5 detailed sub-skills (vrt-visual-diff / vrt-migration-eval / vrt-markup-synth / vrt-regression-watch / vrt-css-fix-loop) and the verb-group CLI; pick the matching sub-skill once the task shape is clear.

From the source SKILL.md

vlmkit is a TypeScript visual-regression toolkit built on Playwright + pixelmatch. Beyond raw pixel diffs, it surfaces agent-friendly signal: computed-style deltas split into universal vs. breakpoint-gated, per-section diffRatio against component bboxes, worst-viewport screenshot paths inline, and (optionally) VLM-emitted CHANGE lists feeding an LLM CSS-fix step.

What this skill does

Vlmkit is a community-contributed Claude Code skill in the automation sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/vlmkit/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when a coding agent has edited HTML/CSS and needs to know whether the visible output changed, where it changed, and which CSS properties drove the change — or when the task is markup-from-image / token / theme audit / fix-loop driven by VLM. This skill orients you to the 5 detailed sub-skills (vrt-visual-diff / vrt-migration-eval / vrt-markup-synth / vrt-regression-watch / vrt-css-fix-loop) and the verb-group CLI; pick the matching sub-skill once the task shape is clear.

Who uses this skill

The Vlmkit Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 76,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/vlmkit
curl -L https://claudskills.com/skills/vlmkit/SKILL.md \
  -o ~/.claude/skills/vlmkit/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/vlmkit/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/vlmkit/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\vlmkit\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Vlmkit Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/vlmkit/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Vlmkit skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Vlmkit skill?

Use Vlmkit when your Claude Code task falls under the General category — specifically in the automation area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Vlmkit" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Vlmkit skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Vlmkit is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/mizchi/skills/blob/HEAD/ai/vlmkit/SKILL.md
Author: mizchi

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

mizchi. (2026). Vlmkit [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/vlmkit/

BibTeX

@misc{vlmkit-2026,
  author    = {mizchi},
  title     = {Vlmkit [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/vlmkit/}
}

Embed this skill

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Badge

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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