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Design HTML

Design HTML is an agent skill (a SKILL.md file) from garrytan/gstack. Design finalization: generates production-quality Pretext-native HTML/CSS. It works with Claude Code, Codex, Cursor, GitHub Copilot and OpenCode and has 135,577 GitHub stars across a repository of 9 listed skills.

github.com/garrytan/gstack/design-html (opens in a new tab)

View on GitHub (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/garrytan/gstack.git
cp -r gstack/design-html ~/.claude/skills/design-html   # personal, or .claude/skills in a project

In the Claude apps, zip the design-html folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/garrytan/gstack.git
cp -r gstack/design-html .agents/skills/design-html   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/garrytan/gstack.git
cp -r gstack/design-html .cursor/skills/design-html   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Design finalization: generates production-quality Pretext-native HTML/CSS. (gstack) Works with approved mockups from /design-shotgun, CEO plans from /plan-ceo-review, design review context from /plan-design-review, or from scratch with a user description. Text actually reflows, heights are computed, layouts are dynamic. 30KB overhead, zero deps. Smart API routing: picks the right Pretext patterns for each design type.

More skills in garrytan/gstack

9 skills are listed from this repository.

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FAQ

Design HTML FAQ

Still curious? Email info@appsgit.com.

What is the Design HTML skill?

Design HTML is an agent skill (a SKILL.md file) from garrytan/gstack. Design finalization: generates production-quality Pretext-native HTML/CSS. It works with Claude Code, Codex, Cursor, GitHub Copilot and OpenCode and has 135,577 GitHub stars across a repository of 9 listed skills. Its SKILL.md lives at github.com/garrytan/gstack/design-html.

How do I install the Design HTML skill?

Copy the design-html folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the Design HTML skill free?

Yes. The repository is open source under the MIT license.

Is Design HTML maintained?

The repository's most recent commit was on Oct 6, 2026. appsgit only lists skills from repositories with a commit in the last six months.