Agent skill

Design

by ninehills in ninehills/skills

Produces distinctive, production-grade UI for pages, components, visual interfaces, typography, and screenshot-driven polish.

No licenceAuto-check passedFrontend & Design

Install Design

skills CLI
$ npx skills add ninehills/skills --skill design -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install ninehills/skills design --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/ninehills/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/design .claude/skills/design && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
design
GitHub stars
280
Token cost
~4.7k tokens
SKILL.md length
2,663 words
Files
6 (incl. references)
Skills in repo
38
Repo updated
First seen
Licence
None found

At a glance

Produces distinctive, production-grade UI for pages, components, visual interfaces, typography, and screenshot-driven polish.

  • Works in 5 steps: Read the current UI evidence:… → Name the exact visual defect in one… → Make the smallest material, geometry,… → …
  • Users ask in any language for UI
  • SKILL.md covers Outcome Contract, Durable Context Preflight, Visual Quick-Fix Mode and Screenshot Iteration Mode, plus 5 more sections
  • Calls bash

What it does

Design is an agent skill from ninehills/skills. Produces distinctive, production-grade UI for pages, components, visual interfaces, typography, and screenshot-driven polish. Use when users ask in any language for UI, page, component, frontend, typography, screenshot-grounded visual polish, or complaints that a screen looks unclear, ugly, inconsistent, or visually wrong. Not for backend logic or data pipelines.

Its SKILL.md is about 4.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `references/design-aesthetic-quality.md`, `references/design-data-viz.md` and `references/design-reference.md`).

It sits in Frontend & Design, covering Typography and Data pipelines and ETL.

When your agent uses it

  • Users ask in any language for UI
  • Screenshot-grounded visual polish
  • Complaints that a screen looks unclear

Example prompts

  • “Use the design skill to produce distinctive, production-grade UI for pages, components, visual interfaces, typography, and screenshot-driven polish”
  • “/design”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Read the current UI evidence: screenshot, rendered page, native view, or responsible component.
  2. Name the exact visual defect in one sentence.
  3. Make the smallest material, geometry, spacing, contrast, typography, or text-fit change that fixes that defect.
  4. Verify the real running surface or generated artifact. Check long words, localized strings, compact states, and at least one narrow…
  5. If the fix touches three or more components, changes product behavior, or reveals a direction problem, stop and switch to Screenshot…

What it can do on your machine

Read from SKILL.md and the folder at commit f3e82a7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • bash

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Design loads about 4.7k tokens when it runs, and up to ~15k if it reads all its reference files. Until then it costs about 93 tokens; SKILL.md has 2,663 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~93
When it runs · the whole SKILL.md, loaded when a task matches
~4.7k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~15k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 2,663 words (~4,739 tokens).

“Prefix your first line with 🥷 inline, not as its own paragraph.”

— opening of SKILL.md by ninehills
name
design
when_to_use
设计, 做页面, 做组件, 不好看, 不和谐, 不清晰, 很丑, 很怪, 很傻, 突兀, 不协调, 字体, 字形, 排印, 排版, 样式, 前端, UI, 截图, build page, create component, make it look good, style, design, screenshot…
dispatch_intent
UI, component, page, visual interface, frontend, artifact-grounded screenshot aesthetic complaint

Read the full SKILL.md on GitHub

Files

SKILL.md and 5 other files (references) in design of ninehills/skills.

  • SKILL.md
  • references/design-aesthetic-quality.md
  • references/design-data-viz.md
  • references/design-reference.md
  • references/design-tokens.md
  • references/design-traps.md

Open the folder on GitHubat commit f3e82a7

Compare with similar skills

Design next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Design compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Design this skillninehills/skills280—~4.7kAutomated safety check: PassNone
Chart Style Unifieraipoch/medical-research-skills1.9k—~3kAutomated safety check: PassMIT
Impeccablebestofjs/bestofjs3.1k26 repos~2.6kAutomated safety check: PassMIT
Tailwindcss Developmentanonaddy/anonaddy4.9k10 repos~865Automated safety check: PassMIT
Design SystemOhh-889/skyroc79511 repos~1.7kAutomated safety check: PassMIT
Make Interfaces Feel Bettersamuelclay/NewsBlur7.6k10 repos~1.5kAutomated safety check: PassMIT

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  • Impeccable

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Questions about Design

What does Design do?

Produces distinctive, production-grade UI for pages, components, visual interfaces, typography, and screenshot-driven polish. Design is an agent skill from ninehills/skills. Produces distinctive, production-grade UI for pages, components, visual interfaces, typography, and screenshot-driven polish.

When should I use Design?

Design fits situations like: users ask in any language for UI; screenshot-grounded visual polish; complaints that a screen looks unclear.

How do I install Design in Claude Code?

Run `npx skills add ninehills/skills --skill design -a claude-code`. Or copy the skill folder (design in ninehills/skills) into .claude/skills/design in your project. Claude Code loads it when a task matches its description.

How do I install Design in Codex?

Run `npx skills add ninehills/skills --skill design -a codex`. Or copy the skill folder (design in ninehills/skills) into .agents/skills/design in your project. Codex loads it when a task matches its description.

Can I use Design in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ninehills/skills --skill design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/design, .gemini/skills/design, .github/skills/design and .opencode/skills/design in your project.

What does Design need to run?

Going by SKILL.md and its folder, Design needs the command-line tools its instructions call (bash).

Does Design access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Design safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Design use?

No licence was found for Design or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Design use?

About 4.7k tokens (SKILL.md is roughly 19k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 11k tokens, read only when the agent opens those files.

What are the alternatives to Design?

Skills that share tags, products or a category with Design: Chart Style Unifier (aipoch/medical-research-skills, 1.9k stars), Impeccable (bestofjs/bestofjs, 3.1k stars), Tailwindcss Development (anonaddy/anonaddy, 4.9k stars) and Design System (Ohh-889/skyroc, 795 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Design?

ninehills (a GitHub user) maintains it in ninehills/skills, which has 280 GitHub stars. The repository holds 38 skills in this directory. The repository was last updated on June 22, 2026.

Source: ninehills/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.