oh-my-design: Skill for Claude Code

.claude/skills/omd-showcase/SKILL.md

omd:showcase is a skill for Claude Code from kwakseongjae/oh-my-design. It costs 71 tokens per session (760 once invoked), scanned A, original, MIT.

A tool that captures a webpage at planned scroll positions and turns the frames into an MP4 or GIF demonstration video.

In plain words
What is it for?
Use it to make single-page demos, compare several page versions side by side, and export videos or frame images.
Why use it?
It provides a repeatable way to show how a page looks and moves without relying on an unpredictable live screen recording.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

This is kwakseongjae/oh-my-design's own configuration. It tells Claude Code how to work on oh-my-design itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything oh-my-design configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is node test-v2/tools/showcase.mjs <run>/render.html --out demo.mp4 --seconds 12 --gif --label "omd".

Reuse

Borrowing it

Nothing to install: this file belongs to kwakseongjae/oh-my-design. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/kwakseongjae/oh-my-design/main/.claude/skills/omd-showcase/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/kwakseongjae/oh-my-design

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 omd:showcase

README.md
[![agentmods](https://agentmods.dev/badge/skills/kwakseongjae/oh-my-design/omd-showcase/github.svg)](https://agentmods.dev/skills/kwakseongjae/oh-my-design/omd-showcase)
Your own site
<a href="https://agentmods.dev/skills/kwakseongjae/oh-my-design/omd-showcase"><img src="https://agentmods.dev/badge/skills/kwakseongjae/oh-my-design/omd-showcase/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 omd:showcase

Your own site · 80×15
<a href="https://agentmods.dev/skills/kwakseongjae/oh-my-design/omd-showcase"><img src="https://agentmods.dev/badge/skills/kwakseongjae/oh-my-design/omd-showcase.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 760 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00071 $0.00760
Opus 5 $0.00036 $0.00380
Sonnet 5 $0.00014 $0.00152
Haiku 4.5 $0.00007 $0.00076

Measured 8d ago against content hash 99ebf60d9241, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

omd:showcase 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 8d 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.

.claude/skills/omd-showcase/SKILL.md · 42 lines

What it actually says

omd:showcase — 페이지에서 시연 영상까지 한 명령

엔진: test-v2/tools/showcase.mjs (설치본에서는 omd showcase). 실시간 녹화가 아니라 프레임 캡처다 — 스크롤 위치를 프레임마다 ease(t)로 놓고 2배율 스크린샷을 찍은 뒤 ffmpeg로 30fps H.264를 만든다. 같은 입력이면 같은 영상이 나오고, 페이지 리빌은 캡처 전에 한 번 끝내 둔다(시연은 구도·에셋·리듬을 보여 주는 것이지 리빌 타이밍을 재는 것이 아니다).

쓰는 법

test-v2/tools/가 있는 레포에서는 위쪽 두 줄을, 없으면(설치된 패키지) 아래 두 줄을 쓴다 — 같은 엔진에 같은 플래그다.

node test-v2/tools/showcase.mjs <run>/render.html --out demo.mp4 --seconds 12 --gif --label "omd"
node test-v2/tools/showcase.mjs --compare a/render.html b/render.html c/render.html --labels "hallmark|ui-ux-pro-max|omd" --out compare.mp4

omd showcase <run>/render.html --out demo.mp4 --seconds 12 --gif --label "omd"
omd showcase --compare a/render.html b/render.html c/render.html --labels "hallmark|ui-ux-pro-max|omd" --out compare.mp4
  • 단일: mp4(+gif). 비교: arm마다 개별 캡처 후 hstack — 페이지 높이가 달라도 각자 0→끝으로 정규화돼 동기 스크롤이 된다.
  • 기본 1440×900 @2x, 30fps, 시작·끝 1.2초 홀드. --dpr 1이면 가볍다.
  • ffmpeg가 없으면 프레임 PNG만 남기고 안내한다(omd:setup이 감지한다).

콘텐츠 룰 (X·Threads 소재일 때)

  • 페이지 하단의 비공식 고지가 프레임에 보여야 한다 — 이 도구는 고지를 만들지 않는다.
  • 레퍼런스 브랜드를 태그·멘션하지 않는다. 봉인 벤치 수치를 영상·캡션에 넣지 않는다.
  • 비교 영상의 조건(같은 브리프·같은 모델·같은 이미지 채널)을 캡션 첫 줄에 적는다.

산출

showcase.mp4(+.gif) — trace.md가 있는 런이면 그 아래에 showcase: 한 줄(프레임 수·초·명령)을 덧붙인다.

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. 8d ago First seen · 42 lines · 71 tokens per session scan A 99ebf60d9241

Subscribe to this mod's changes

omd:showcase is a skill published in the GitHub repository kwakseongjae/oh-my-design (498 stars, last pushed 4d ago), licensed MIT. It adds 71 tokens to every session and 760 once invoked, about $0.0004 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 2026-09-03.

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