Agent skill

Replica Design

by Jakeschincariol in Jakeschincariol/replica-skill

Rebuilds an app's design system for a clone: colour roles, type scale, spacing, radius, shadows and every component with its states, as design tokens plus component specs, with original assets…

MITAuto-check passedFrontend & Design

Install Replica Design

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

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

GitHub CLI
$ gh skill install Jakeschincariol/replica-skill replica-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/Jakeschincariol/replica-skill.git skills-src && mkdir -p .claude/skills && cp -r skills-src/replica-design .claude/skills/replica-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
replica-design
GitHub stars
1.4k
Token cost
~994 tokens
SKILL.md length
446 words
Files
3
Skills in repo
11
Repo updated
First seen
Licence
MIT

At a glance

Rebuilds an app's design system for a clone: colour roles, type scale, spacing, radius, shadows and every component with its states, as design tokens plus component specs, with original assets…

  • Works in 4 steps: measure, do not guess → write the tokens → component specs → …
  • The user says match the design
  • SKILL.md covers The rules, Step 1: measure, do not guess, Step 2: write the tokens and Step 3: component specs, plus 2 more sections
  • Runs Python scripts from its folder; calls python3

What it does

Replica Design is an agent skill from Jakeschincariol/replica-skill. Rebuilds an app's design system for a clone: colour roles, type scale, spacing, radius, shadows and every component with its states, as design tokens plus component specs, with original assets instead of the target's logos, icons, illustrations or licensed fonts. Includes a WCAG contrast checker. Use when the user says "match the design", "rebuild the design system", "get the colours and fonts", "make it look like X", "design tokens for my clone", or after /replica-architect.

Its SKILL.md is about 990 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `contrast.py` and `tokens.json`).

It sits in Frontend & Design, covering Typography, Design tokens and Icons and illustration. The repository describes itself as: Eleven free Claude skills that clone any app: reverse-engineer it, rebuild it, test it for bugs, then fix what its users hate. Free, MIT. The licence is MIT.

When your agent uses it

  • The user says match the design
  • Rebuild the design system
  • Get the colours and fonts
  • Make it look like X

Example prompts

  • “match the design”
  • “rebuild the design system”
  • “get the colours and fonts”
  • “/replica-design”

Requirements

  • Python 3

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. measure, do not guess
  2. write the tokens
  3. component specs
  4. build the primitives

What it can do on your machine

Read from SKILL.md and the folder at commit 77c9436. 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

    Ships script files (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python3

    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

Replica Design loads about 994 tokens when it runs. Until then it costs about 124 tokens; SKILL.md has 446 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~124
When it runs · the whole SKILL.md, loaded when a task matches
~994

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

The full file from Jakeschincariol/replica-skill at commit 77c9436, republished under its MIT licence (© Jakeschincariol). 446 words, ~994 tokens.

Download SKILL.mdSave it as .claude/skills/replica-design/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
replica-design
description
Rebuilds an app's design system for a clone: colour roles, type scale, spacing, radius, shadows and every component with its states, as design tokens plus component specs, with original assets instead of the target's logos, icons, illustrations or licensed fonts. Includes a WCAG contrast checker. Use when the user says "match the design", "rebuild the design system", "get the colours and fonts", "make it look like X", "design tokens for my clone", or after /replica-architect.

replica-design

Reads replica/recon.md and the screenshots in replica/screens/. Writes replica/design/tokens.json (template in this folder), tokens.css, the Tailwind mapping, and replica/design/components.md.

bash
python3 contrast.py replica/design/tokens.json     # every text pair, WCAG ratio

The rules

What you rebuild is the system: the roles, the scale, the patterns, the way a form or a modal behaves. Those are not ownable, and users expect them. What you never take:

  • Logos, icons, illustrations, photos, sounds. Use an open icon set (Lucide, Phosphor, Heroicons, Tabler, all MIT or similar) and make or commission your own illustrations. Do not trace theirs.
  • Licensed fonts. If the original uses a paid or proprietary font, pick an open one with the same job: Inter, Geist, IBM Plex, Manrope, Source Serif.
  • Their copy. Every label and empty state gets written fresh.
  • Their brand colour. Record it as a role (accent), use a neutral placeholder now, and replica-brand gives you your own. The signature colour plus the signature layout is trade dress, and it changes before launch.

Step 1: measure, do not guess

From the screenshots (zoom in, use a colour picker on the user's machine):

  • Colour roles, not colours: bg, surface, border, border-input, text, text-muted, accent, on-accent, danger, success, warning. Count how many greys the app really uses. Usually 5 to 7.
  • Type scale: sizes, line heights, weights. Snap to a scale (12, 14, 16, 20, 28, 40 is common). Note the font category, not the font file.
  • Spacing: measure gaps between elements. It is almost always a 4 or 8 base. Write the scale.
  • Radius, shadow, motion: two or three of each.
  • Layout: max content width, grid, breakpoints, sidebar width, header height.
Show full SKILL.md (185 more words)Show less

Step 2: write the tokens

Fill tokens.json. Keep the role names. replica-brand only changes values. Generate tokens.css as custom properties and map them into Tailwind's theme so components use bg-surface text-muted, never raw hex.

Add a pairs list for every text and background combination the app uses, then:

bash
python3 contrast.py replica/design/tokens.json

AA is the floor: 4.5:1 for body text, 3:1 for large text and for input borders and focus rings. It exits 1 on a failure. Fix it in the tokens, not per component.

Step 3: component specs

For every component in the recon list, one block in components.md:

Button
  variants  primary, secondary, ghost, danger
  sizes     sm 32px, md 40px, lg 48px
  states    default, hover, active, focus-visible (2px ring, accent), disabled, loading
  tokens    bg accent, text on-accent, radius md, font sm/600
  a11y      real <button>, visible focus, loading keeps the label for screen readers
  used on   S02, S07, S09

Every state the recon saw, plus the ones it should have: focus, disabled, loading, error, empty. Keyboard and screen reader behaviour is part of the spec.

Step 4: build the primitives

Build the components in code once, in isolation (a /design route or Storybook), before any screen. Use an accessible base if the stack has one (Radix, shadcn/ui, React Aria). Screenshot the page. That is the design system check.

Output

tokens.json, tokens.css, the Tailwind config, components.md, the primitives built, and a contrast report with zero AA failures. Next: /replica-build.

© Jakeschincariol, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files in replica-design of Jakeschincariol/replica-skill.

  • SKILL.md
  • contrast.py
  • tokens.json

Open the folder on GitHubat commit 77c9436

Compare with similar skills

Replica 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.

Replica Design compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Replica Design this skillJakeschincariol/replica-skill1.4k—~994Automated safety check: PassMIT
Interface KitJuliusBrussee/skills1621 repos~5.3kAutomated safety check: PassMIT
Design Theme Guidesickn33/agentic-awesome-skills47k1 repos~5.7kAutomated safety check: PassMIT
Oma Designfirst-fluke/oh-my-agent1.3k—~2.9kAutomated safety check: PassMIT
Design Standardsrampstackco/claude-skills945—~2.4kAutomated safety check: PassMIT
Design SystemOhh-889/skyroc79511 repos~1.7kAutomated safety check: PassMIT

Similar skills

  • Interface Kit

    JuliusBrussee/skills

    Authoritative guide for implementing stunning, accessible, performant UI.

    162 GitHub starsUsed in 1 repo~5.3k tokens
    Frontend & DesignAuto-check passed
  • Design Theme Guide

    sickn33/agentic-awesome-skills

    Design-token register: colour, typography, spacing and radius tokens with light and dark values, contrast ratio and WCAG level.

    47k GitHub starsUsed in 1 repo~5.7k tokens
    Frontend & DesignAuto-check passed
  • Oma Design

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    1.3k GitHub stars~2.9k tokensUpdated today
    Frontend & DesignAuto-check passed
  • Design Standards

    rampstackco/claude-skills

    Apply production-grade design standards when building or reviewing pages, components, or UI.

    945 GitHub stars~2.4k tokensUpdated 3 days ago
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  • Design System

    Ohh-889/skyroc

    Token architecture, component specifications, and slide generation.

    795 GitHub starsUsed in 11 repos~1.7k tokens
    Frontend & DesignAuto-check passed
  • Scalar's design system — design tokens, theming (@scalar/themes), CSS variables, and the @scalar/components library.

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More from Jakeschincariol/replica-skill

All 11 skills in this repo
  • Replica Architect

    Jakeschincariol/replica-skill

    Plans the stack, database schema and API for an app clone, from the recon map replica-recon wrote.

    1.4k GitHub stars~1.1k tokensUpdated 6 days ago
    Auto-check passed
  • Replica Brand

    Jakeschincariol/replica-skill

    Names and rebrands an app clone so it is the user's own: name candidates with the trademark, domain, store and handle checks to run, a new palette checked for contrast, a logo brief, a voice guide…

    1.4k GitHub stars~1.1k tokensUpdated 6 days ago
    Auto-check passed
  • Replica Deploy

    Jakeschincariol/replica-skill

    Ships an app clone live on the user's own domain: a preflight gate (tests green, parity must-haves done, rebrand sweep clean, listing linted, legal pages up), production database and env vars, the…

    1.4k GitHub stars~1.1k tokensUpdated 6 days ago
    Auto-check passed
  • Replica Diff

    Jakeschincariol/replica-skill

    Compares an app clone against the original: a feature parity score from the feature matrix (weighted by must, should, could) with the missing list in build order, plus a screenshot layout diff that…

    1.4k GitHub stars~1k tokensUpdated 6 days ago
    Auto-check passed
  • Replica Entrepreneur

    Jakeschincariol/replica-skill

    Researches the app being cloned and reads what its real users say in public reviews (App Store, Google Play, G2, Capterra, Trustpilot, Reddit, Hacker News, its own feature-request board), then ranks…

    1.4k GitHub stars~1.2k tokensUpdated 6 days ago
    Auto-check passed
  • Replica Launch

    Jakeschincariol/replica-skill

    Writes the launch for an app clone: the landing page built on the positioning angle, pricing set against the original's public pricing and its users' complaints, and the App Store and Google Play…

    1.4k GitHub stars~1k tokensUpdated 6 days ago
    Auto-check passed

Questions about Replica Design

What does Replica Design do?

Rebuilds an app's design system for a clone: colour roles, type scale, spacing, radius, shadows and every component with its states, as design tokens plus component specs, with original assets…. Replica Design is an agent skill from Jakeschincariol/replica-skill. Rebuilds an app's design system for a clone: colour roles, type scale, spacing, radius, shadows and every component with its states, as design tokens plus component specs, with original assets instead of the target's logos, icons, illustrations or licensed fonts.

When should I use Replica Design?

Replica Design fits situations like: the user says match the design; rebuild the design system; get the colours and fonts; make it look like X.

How do I install Replica Design in Claude Code?

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

How do I install Replica Design in Codex?

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

Can I use Replica 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 Jakeschincariol/replica-skill --skill replica-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/replica-design, .gemini/skills/replica-design, .github/skills/replica-design and .opencode/skills/replica-design in your project.

What does Replica Design need to run?

Going by SKILL.md and its folder, Replica Design needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.

Does Replica 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 Replica 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 Replica Design use?

Replica Design is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Replica Design use?

About 994 tokens (SKILL.md is roughly 4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Replica Design?

Skills that share tags, products or a category with Replica Design: Interface Kit (JuliusBrussee/skills, 162 stars), Design Theme Guide (sickn33/agentic-awesome-skills, 47k stars), Oma Design (first-fluke/oh-my-agent, 1.3k stars) and Design Standards (rampstackco/claude-skills, 945 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Replica Design?

Jakeschincariol (a GitHub user) maintains it in Jakeschincariol/replica-skill, which has 1,432 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on October 3, 2026.

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