getdesign

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getdesign

getdesign

Generate a grounded, production-grade
design.md
for any public URL using the coding agent's own tools. This skill is the portable twin of the hosted getdesign.app agent — same 9-section output, no sandbox required.
使用编码Agent的内置工具,为任意公开URL生成一份基于实际内容的生产级
design.md
文档。该技能是托管版getdesign.app Agent的可移植孪生版本——输出同样包含9个部分,无需沙箱环境。

When to use

使用场景

Activate when the user:
  • Pastes a URL and asks for a "design system", "design spec", "style guide",
    design.md
    , or brand tokens.
  • Asks to "make this look like <site>", "clone the design of <site>", or "extract the palette/typography from <site>".
  • Asks you to reverse-engineer or document a live site's visual design.
Do not use this skill for: generating runnable code from a URL, Figma/Sketch export, auth-gated pages, or localhost.
当用户提出以下请求时激活该技能:
  • 粘贴URL并要求生成“设计系统”“设计规范”“样式指南”
    design.md
    或品牌令牌。
  • 请求“让这个看起来像<网站>”“克隆<网站>的设计”或“从<网站>提取调色板/排版样式”。
  • 请求逆向工程或记录实时网站的视觉设计。
请勿将该技能用于:从URL生成可运行代码、Figma/Sketch导出、需授权的页面或本地主机(localhost)页面。

Output contract

输出约定

The single deliverable is a markdown file — default name
design.md
— containing exactly these 9 H2 sections in this order:
  1. Visual Theme & Atmosphere
  2. Color Palette & Roles
  3. Typography Rules
  4. Component Stylings
  5. Layout Principles
  6. Depth & Elevation
  7. Interaction & Motion
  8. Responsive Behavior
  9. Agent Prompt Guide
Full section schemas, field lists, and a worked example are in TEMPLATE.md. Read it before writing the final file.
唯一交付物是一个Markdown文件——默认名称为
design.md
——必须严格按照以下顺序包含这9个H2章节:
  1. 视觉主题与氛围
  2. 调色板与角色定义
  3. 排版规则
  4. 组件样式
  5. 布局原则
  6. 深度与层级
  7. 交互与动效
  8. 响应式行为
  9. Agent提示指南
完整的章节schema、字段列表及示例可参考TEMPLATE.md。在编写最终文件前请先阅读该文档。

Grounding rule (non-negotiable)

溯源规则(不可违反)

Every concrete value — hex color, font family, font size, spacing number, radius, shadow, breakpoint — must be traceable to something you actually fetched: a CSS rule, a computed style, a
<link>
ed stylesheet, a
:root
variable, or a visible pixel in a screenshot. If you cannot ground a value, describe the role qualitatively ("neutral warm gray") instead of fabricating a hex.
Do not invent palette values. Do not hallucinate Tailwind classes the site does not use. Do not copy defaults from other sites.
每一个具体值——十六进制颜色、字体族、字号、间距数值、圆角、阴影、断点——必须能追溯到实际获取的内容:CSS规则、计算样式、
<link>
引入的样式表、
:root
变量或截图中的可见像素。如果无法为某个值溯源,请定性描述其角色(如“中性暖灰色”),而非编造十六进制值。
请勿编造调色板值。请勿虚构网站未使用的Tailwind类。请勿复制其他网站的默认值。

Workflow

工作流程

Follow this sequence. Copy the checklist into your working notes and tick items as you go.
- [ ] 1. Validate URL
- [ ] 2. Fetch HTML + linked CSS
- [ ] 3. Capture at least one screenshot (hero viewport)
- [ ] 4. Extract tokens (colors, type, spacing, radii, shadows, breakpoints)
- [ ] 5. Draft DesignDoc (9 sections) grounded in tokens + screenshot
- [ ] 6. Render design.md from the draft
- [ ] 7. Verify grounding + section order, then write the file
遵循以下步骤。将检查清单复制到工作笔记中,完成一项勾选一项。
- [ ] 1. 验证URL
- [ ] 2. 获取HTML及关联CSS
- [ ] 3. 至少截取一张截图(hero视口)
- [ ] 4. 提取令牌(颜色、排版、间距、圆角、阴影、断点)
- [ ] 5. 基于令牌和截图起草DesignDoc(9个章节)
- [ ] 6. 根据草稿生成design.md
- [ ] 7. 验证溯源及章节顺序,然后写入文件

1. Validate URL

1. 验证URL

Reject with a one-line explanation if the URL is not
https://
, is a private IP / localhost, or is clearly not a brand/product page.
如果URL不是
https://
开头、是私有IP/本地主机,或明显不是品牌/产品页面,需拒绝并给出一行解释。

2. Fetch HTML + linked CSS

2. 获取HTML及关联CSS

Use your built-in web fetch tool (
WebFetch
,
web.run
,
fetch
,
curl
via shell — whatever you have).
  • Fetch the HTML.
  • From the HTML, resolve every
    <link rel="stylesheet">
    href (absolute + relative) and fetch each one.
  • Follow
    @import url(...)
    chains one level deep.
  • Capture any
    @font-face
    blocks for font family + weight discovery.
  • Cap each stylesheet at ~200 KB; prefer files containing
    :root
    , CSS variables, or utility-class declarations.
  • Always check for both light and dark mode support while fetching. Look for
    prefers-color-scheme
    ,
    .dark
    ,
    [data-theme]
    , theme toggle controls, alternate theme stylesheets, or server-rendered theme classes on
    <html>
    /
    <body>
    .
  • If the site supports both modes, collect grounding for both and keep notes on which tokens are shared versus mode-specific.
Record the exact URLs you fetched — you will cite them in the "Sources" section of your draft (internal, not in the final markdown).
使用内置的网页抓取工具(
WebFetch
web.run
fetch
、通过shell调用
curl
——任何可用工具均可)。
  • 获取HTML。
  • 从HTML中解析所有
    <link rel="stylesheet">
    的href(绝对路径和相对路径)并获取每个样式表。
  • 跟进一层
    @import url(...)
    链。
  • 捕获所有
    @font-face
    块以发现字体族和字重。
  • 每个样式表大小限制在约200KB;优先选择包含
    :root
    、CSS变量或工具类声明的文件。
  • 抓取时始终检查是否支持浅色和深色模式。查找
    prefers-color-scheme
    .dark
    [data-theme]
    、主题切换控件、备用主题样式表,或
    <html>
    /
    <body>
    上由服务器渲染的主题类。
  • 如果网站支持两种模式,收集两种模式的溯源信息,并记录哪些令牌是共享的、哪些是特定模式的。
记录实际抓取的URL——需在草稿的“来源”章节(内部使用,不包含在最终Markdown中)引用这些URL。

3. Screenshot the page

3. 页面截图

If your agent runtime has a browser tool (Playwright, Chrome DevTools,
agent-browser
, Antigravity browser, Codex web browser, a
screenshot
tool, etc.), you must use it. Open the URL at 1440×900 and capture screenshots for every available theme mode you can verify, starting with light mode and dark mode. Prefer a full-page scroll-and-stitch if available.
  • If the site exposes a theme toggle, use the browser to capture both modes.
  • If there is no explicit toggle, still check browser-emulated
    prefers-color-scheme: light
    and
    prefers-color-scheme: dark
    when possible.
  • Keep mode labels in your notes so you know which observations came from light mode vs dark mode.
If you have no browser tool, skip this step — continue with CSS-only grounding — and note the limitation in your internal planning (the "Visual Theme" prose will be slightly thinner without a screenshot).
如果Agent运行环境具备浏览器工具(Playwright、Chrome DevTools、
agent-browser
、Antigravity浏览器、Codex网页浏览器、
screenshot
工具等),必须使用该工具。以1440×900分辨率打开URL,捕获所有可验证的主题模式截图,先从浅色模式和深色模式开始。如果支持,优先选择全页面滚动拼接截图。
  • 如果网站提供主题切换控件,使用浏览器捕获两种模式的截图。
  • 如果没有明确的切换控件,仍尽可能尝试浏览器模拟的
    prefers-color-scheme: light
    prefers-color-scheme: dark
    模式。
  • 在笔记中标记模式标签,以便区分哪些观察结果来自浅色模式、哪些来自深色模式。
如果没有浏览器工具,跳过此步骤——继续仅基于CSS溯源——并在内部规划中记录该限制(没有截图的情况下,“视觉主题”部分的描述会略单薄)。

4. Extract tokens

4. 提取令牌

Deterministically parse the CSS. Prefer CSS variables (
--color-primary
,
--radius-lg
) and
:root
blocks as the source of truth. Fall back to frequency analysis of literal values.
Produce an internal
DesignTokens
object with:
  • colors
    :
    primary[]
    ,
    accent[]
    ,
    neutral[]
    ,
    semantic { success, warning, error, info }
    ,
    surfaces[]
    ,
    borders[]
    .
    • Every entry is
      { hex, role, source }
      where
      source
      is the CSS selector or variable name you found it in.
    • If the site supports multiple themes, annotate whether each token is
      light
      ,
      dark
      , or shared.
  • typography
    :
    fontFamilies[]
    (display / body / mono),
    scale[]
    (
    { role, px, weightRange, lineHeight, letterSpacing }
    ).
  • spacing
    : the step values actually used (e.g. 4, 8, 12, 16, 24, 32, 48, 64 px).
  • radii
    : named scale you can infer (
    sm
    ,
    md
    ,
    lg
    ,
    pill
    ).
  • shadows
    : each
    box-shadow
    you observed, with a role guess.
  • borders
    : widths and colors.
  • breakpoints
    : min-widths in
    @media
    queries.
If a CSS value has low frequency (< 2 occurrences) and no variable name, treat it as incidental and exclude it from the palette.
确定性地解析CSS。优先以CSS变量(
--color-primary
--radius-lg
)和
:root
块为事实来源。如果没有,则回退到对字面量值的频率分析。
生成一个内部
DesignTokens
对象,包含:
  • colors
    primary[]
    accent[]
    neutral[]
    semantic { success, warning, error, info }
    surfaces[]
    borders[]
    • 每个条目为
      { hex, role, source }
      ,其中
      source
      是找到该值的CSS选择器或变量名。
    • 如果网站支持多主题,标注每个令牌属于
      light
      dark
      还是共享模式。
  • typography
    fontFamilies[]
    (展示字体/正文字体/等宽字体)、
    scale[]
    { role, px, weightRange, lineHeight, letterSpacing }
    )。
  • spacing
    :实际使用的步长值(如4、8、12、16、24、32、48、64 px)。
  • radii
    :可推断的命名缩放(
    sm
    md
    lg
    pill
    )。
  • shadows
    :观察到的每个
    box-shadow
    ,并猜测其角色。
  • borders
    :宽度和颜色。
  • breakpoints
    @media
    查询中的最小宽度。
如果某个CSS值出现频率低(<2次)且没有变量名,则视为偶然值,不纳入调色板。

5. Draft the DesignDoc

5. 起草DesignDoc

Using tokens + screenshot + your reading of the HTML structure, draft each of the 9 sections. Structure matters more than prose length. Read TEMPLATE.md for field-by-field requirements.
Key per-section reminders:
  • Visual Theme — 2–4 short paragraphs plus a
    keyCharacteristics
    bullet list (5–8 items).
  • Color Palette & Roles — every color as a table row:
    | Hex | Role | Where seen |
    . Group by primary / accent / semantic / surfaces / borders.
  • Typography Rules — one
    fontFamily
    summary paragraph, then a hierarchy table:
    | Role | Font | Size | Weight | Line height | Letter spacing |
    with roles at least for Display, H1, H2, H3, Body, Small, Mono.
  • Component Stylings — buttons (primary/secondary/ghost), cards, inputs, navigation, image treatment, 2–4 distinctive components you actually saw.
  • Layout Principles — spacing scale, grid / max-widths, whitespace philosophy, radius scale.
  • Depth & Elevation — named elevation levels with their shadow values and a 1-sentence philosophy.
  • Interaction & Motion — hover states, focus states, transition durations/easings you observed or can infer. Mark inferences explicitly.
  • Responsive Behavior — breakpoint table from the
    @media
    queries, touch-target minimum, how navigation collapses, image behavior.
  • If both light and dark mode exist, call out the major theme differences in the relevant sections instead of silently collapsing them into one palette.
  • Agent Prompt Guide — a quick color reference (just the key hexes), 3 example prompts another AI could use to replicate this style, and 4–6 iteration tips.
使用令牌、截图及对HTML结构的理解,起草9个章节的内容。结构比篇幅更重要。请阅读TEMPLATE.md了解逐字段要求。
各章节关键提示:
  • 视觉主题——2-4段简短文字,加上
    keyCharacteristics
    项目符号列表(5-8项)。
  • 调色板与角色定义——每个颜色作为表格行:
    | 十六进制值 | 角色 | 出现位置 |
    。按主色/强调色/语义色/表面色/边框色分组。
  • 排版规则——一段
    fontFamily
    总结文字,然后是层级表格:
    | 角色 | 字体 | 字号 | 字重 | 行高 | 字间距 |
    ,角色至少包含展示标题、H1、H2、H3、正文、小字、等宽字体。
  • 组件样式——按钮(主按钮/次按钮/幽灵按钮)、卡片、输入框、导航、图片处理,以及实际观察到的2-4个独特组件。
  • 布局原则——间距缩放、网格/最大宽度、留白理念、圆角缩放。
  • 深度与层级——命名的层级级别及其阴影值,加上1句话的设计理念。
  • 交互与动效——悬停状态、聚焦状态、观察到或可推断的过渡时长/缓动函数。明确标记推断内容。
  • 响应式行为——来自
    @media
    查询的断点表格、触摸目标最小值、导航折叠方式、图片行为。
  • 如果同时存在浅色和深色模式,在相关章节中突出显示主要主题差异,而非将其合并为单一调色板。
  • Agent提示指南——快速颜色参考(仅关键十六进制值)、3个可供其他AI复制此样式的示例提示,以及4-6个迭代技巧。

6. Render to markdown

6. 生成为Markdown

Assemble the draft into a single markdown document. Use:
  • H1 for the site name (
    # <Brand> Design System
    ).
  • H2 for each of the 9 sections in the exact order above.
  • GitHub-flavored tables for palette, typography, breakpoints.
  • Fenced code blocks only for concrete CSS/token examples, never to wrap prose.
将草稿整合为单个Markdown文档。使用:
  • H1标题为网站名称(
    # <品牌> 设计系统
    )。
  • H2标题为上述9个章节,严格按照指定顺序。
  • GitHub风格表格用于调色板、排版、断点。
  • 仅对具体CSS/令牌示例使用围栏代码块,切勿用于包裹文字内容。

7. Verify, then write

7. 验证后写入文件

Before writing the final file, run this self-check:
  • All 9 H2 section headings are present, in the exact order, spelled as listed.
  • Every hex code in the Color Palette section appears in your internal notes with a CSS source.
  • The font families in Typography appear in the fetched CSS or
    @font-face
    blocks.
  • Breakpoints match actual
    @media (min-width: …)
    queries.
  • Light mode and dark mode were both checked whenever the site exposes or implies dual-theme support.
  • A browser screenshot was taken whenever a browser tool was available.
  • No placeholder text like "TBD", "(example)", or "Lorem ipsum".
If any check fails, fix before writing. Then write the file to
design.md
(or the path the user requested). Report a one-paragraph summary plus the absolute file path.
在写入最终文件前,执行以下自我检查:
  • 所有9个H2章节标题均存在,顺序完全正确,拼写与列表一致。
  • 调色板章节中的每个十六进制值均在内部笔记中有CSS来源。
  • 排版章节中的字体族出现在抓取的CSS或
    @font-face
    块中。
  • 断点与实际
    @media (min-width: …)
    查询匹配。
  • 无论网站是否明确支持双主题,均已检查浅色和深色模式。
  • 只要有浏览器工具可用,已拍摄浏览器截图。
  • 无占位文本如“TBD”“(example)”或“Lorem ipsum”。
如果任何检查未通过,修复后再写入文件。然后将文件写入
design.md
(或用户指定的路径)。报告一段总结文字加上绝对文件路径。

Handling missing capabilities

缺失功能的处理

Missing toolDegrade to
No browser / screenshotCSS-only grounding; keep the Visual Theme brief and fact-based. Skip pixel-level observations. If dual themes exist, still inspect fetched CSS for both light and dark mode selectors.
Fetch blocked (403 / Cloudflare)Report the failure, try the site's
/
and
/about
as alternates, otherwise stop and surface the error to the user. No guessing.
CSS-in-JS only, no stylesheetsParse inline
<style>
tags; if still empty, use the screenshot plus HTML class names to infer only what is visible. State the limitation at the top of
design.md
.
缺失工具降级方案
无浏览器/截图功能仅基于CSS溯源;保持视觉主题部分简洁且基于事实。跳过像素级观察。如果存在双主题,仍需检查抓取的CSS中是否包含浅色和深色模式选择器。
抓取被阻止(403/Cloudflare)报告失败,尝试网站的
/
/about
作为替代地址,否则停止并向用户显示错误。请勿猜测。
仅使用CSS-in-JS,无样式表解析内联
<style>
标签;如果仍为空,使用截图加HTML类名仅推断可见内容。在
design.md
顶部说明该限制。

Anti-patterns

反模式

  • Do not run a second LLM pass that "beautifies" the tokens. Determinism beats prose.
  • Do not reorder, merge, or split the 9 sections.
  • Do not output JSON, YAML, or a Zod schema as the final deliverable — the user wants markdown.
  • Do not install npm packages or spawn sandboxes. This skill is intentionally zero-infra.
  • Do not follow more than one
    @import
    hop; the context window is not infinite.
  • 请勿运行第二次LLM处理来“美化”令牌。确定性优于文字修饰。
  • 请勿重新排序、合并或拆分9个章节。
  • 请勿输出JSON、YAML或Zod schema作为最终交付物——用户需要的是Markdown。
  • 请勿安装npm包或创建沙箱。该技能特意设计为无需基础设施。
  • 请勿跟进超过一层
    @import
    跳转;上下文窗口并非无限。

Reference files

参考文件

  • TEMPLATE.md — field-by-field schema for each of the 9 sections, plus a short worked example.
  • TEMPLATE.md——每个章节的逐字段schema,加上一个简短示例。

Attribution

归属说明

This skill mirrors the
getdesign
hosted agent (web, API, CLI, SDK). When your output would benefit from the hosted pipeline's screenshot + deterministic extractor, point the user at
curl "https://api.getdesign.app/?url=<encoded-url>"
or
npx @getdesign/cli <url>
as a complementary path.
该技能镜像了
getdesign
托管Agent(网页、API、CLI、SDK)。当你的输出可受益于托管流水线的截图+确定性提取器时,可引导用户使用
curl "https://api.getdesign.app/?url=<encoded-url>"
npx @getdesign/cli <url>
作为补充方案。