Design to Code Agent Skill

Mockup-to-component pipeline using Google Stitch, 21st.dev, and Storybook MCP.

Context cost
6.2k tokensestimated from the bundle, loaded when it triggers
Bundle
4 files · 24.6 kBtext throughout, nothing executable
Licence
MITthe author’s own terms
Last change
—v1.0.1
Servers it uses
Noneruns standalone

What it does

Mockup-to-component pipeline using Google Stitch, 21st.dev, and Storybook MCP. Accepts a screenshot, a description, or a URL and produces production-ready React components, checking existing Storybook components before generating anything new. Use when implementing UI from a mockup or screenshot. To call the MCP tool surface on its own, with no design to convert, use storybook-mcp-integration.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

21st-devcomponentdesign-to-codefrontendmockupreactstitchui-generation
Filed under

Design & Media

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md18.4 kB · preview
--- name: design-to-code license: MIT compatibility: "Claude Code 2.1.277+. Optional: stitch (official Google Stitch), 21st-dev-magic, storybook-mcp (@storybook/addon-mcp) MCP servers." argument-hint: "[screenshot-path | description | url]" context: fork # user-typed commands stay interactive; CC >= 2.1.218 backgrounds forks by default (#3093) background: false user-invocable: true effort: high model: sonnet allowed-tools: "Read Write Edit Glob Grep Bash WebFetch WebSearch AskUserQuestion Agent TaskCreate TaskUpdate TaskList mcp__21st-dev-magic__search mcp__21st-dev-magic__search_picker mcp__21st-dev-magic__get_component mcp__21st-dev-magic__get_theme mcp__21st-dev-magic__get_usage mcp__stitch__list_projects mcp__plugin_hq-ext_stitch__list_projects mcp__stitch__get_project mcp__plugin_hq-ext_stitch__get_project mcp__stitch__list_screens mcp__plugin_hq-ext_stitch__list_screens mcp__stitch__get_screen mcp__plugin_hq-ext_stitch__get_screen mcp__stitch__generate_screen_from_text mcp__plugin_hq-ext_stitch__generate_screen_from_text mcp__storybook-mcp__list-all-documentation mcp__storybook-mcp__get-documentation mcp__storybook-mcp__preview-stories mcp__storybook-mcp__run-story-tests" # "Priority 2 — Search 21st.dev" (below) named the server but granted none of # its tools, so that whole branch was unreachable. Read-only surface only. # search/search_picker/metadata are unmetered; get_component is the only metered # tool (2/day on free, unlimited on paid — call get_usage, do not assume). # Browse first regardless: the USER should pick, not the model. # Stitch: body names these five (live stitch.googleapis.com/mcp roster). # Grant BOTH prefixes: standalone stitch (mcp__stitch__*) and hq-ext plugin # (mcp__plugin_hq-ext_stitch__*). See https://code.claude.com/docs/en/mcp-servers # Storybook MCP: body calls these when storybook-mcp is available. skills: - design-system-tokens - component-search - storybook-mcp-integration - design-context-extract - remember - memory metadata: category: workflow-automation mcp-server: stitch, 21st-dev-magic, storybook-mcp version: "1.0.1" author: "OrchestKit" complexity: "complex" tags: "design-to-code, stitch, 21st-dev, ui-generation, mockup, component, react, frontend" triggers: keywords: ["design to code", "mockup to code", "screenshot to component", "convert design", "implement ui from", "build from mockup"] examples: - "convert this screenshot into a React component" - "implement the UI from this Figma mockup" - "build a component from this design" anti-triggers: [explore, assess, review, brainstorm, extract design] paths: - "src/components/**/*.{tsx,css}" - "**/*design-tokens*" - ".storybook/**" ---
50# Design to Code
51
52Convert visual designs into production-ready React components using a four-stage pipeline: Extract, Match, Adapt, Render.
53
54```bash
55design-to-code screenshot of hero section # From description
56design-to-code /tmp/mockup.png # From screenshot
57design-to-code https://example.com/pricing # From URL
58```
59
60## Pipeline Overview
61
62```
63Input (screenshot/description/URL)
64 │
65 ▼
66┌─────────────────────────┐
67│ Stage 1: EXTRACT │ Stitch MCP → screen details + URLs
68│ generate_screen_from_text│ Create screens from a text prompt
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md2,187 words
Files4
LicenceMIT
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈790
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
5,360
on trigger
The instruction body and 3 supporting files, read only when the skill fires.
3.1%
of a 200k window
Ten skills this size would take about 31% of the window before you open a file.
050k100k150k200k context window

6.2k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

It does ask the agent to write files and to fetch pages, using the file and network access your client already has.

What it asks for
Writes filesyes
Network accessyes

Read from the allowed-tools line of this skill’s own SKILL.md. It also asks for Bash, which could do either, so what is not named there is not ruled out. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

4 files, 24.6 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md18.4 kB
  • test-cases.json2.8 kB
  • rules/_sections.md0.4 kB
  • rules/catalog-registration.md3.0 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 4 files you can review in full before installing. The MIT licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Design to Code · 6.2k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/design-to-code/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/design-to-code" ] && { [ ! -e .claude/skills/design-to-code ] || { mv .claude/skills/design-to-code "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/design-to-code" .claude/skills/ && echo "Installed .claude/skills/design-to-code"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add yonatangross/design-to-code

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/design-to-code/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/design-to-code/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/design-to-code" ] && { [ ! -e ~/.claude/skills/design-to-code ] || { mv ~/.claude/skills/design-to-code "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/design-to-code" ~/.claude/skills/ && echo "Installed ~/.claude/skills/design-to-code" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/design-to-code/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Version1.0.1
Publishedno release date on file
PriceFree
Referenceyonatangross/design-to-code

Versions

v1.0.1 is what is on the shelf; no release here carries a date. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

v1.0.1
  • No earlier releases have been published to the marketplace.
Pinning

The install command always fetches the release that is current the day you run it — v1.0.1 today — and cannot ask for an earlier one. The copy on your disk does not change until you run it again.

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