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Agent skill

UI Cloner

by ragnar-pwninskjold in ragnar-pwninskjold/tech-snacks

A skill your agent uses when user provides a URL and wants to replicate or clone a website's UI, design, or visual style for their own product.

MITAuto-check passedFrontend & Design

Install UI Cloner

skills CLI
$ npx skills add ragnar-pwninskjold/tech-snacks --skill ui-cloner -a claude-code

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

GitHub CLI
$ gh skill install ragnar-pwninskjold/tech-snacks ui-cloner --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/ragnar-pwninskjold/tech-snacks.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/tech-snacks/skills/ui-cloner .claude/skills/ui-cloner && 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
ui-cloner
GitHub stars
137
Token cost
~1.1k tokens
SKILL.md length
535 words
Files
12 (incl. references)
Skills in repo
7
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when user provides a URL and wants to replicate or clone a website's UI, design, or visual style for their own product.

  • Works in 2 steps: Ask for audit mode selection. → MANDATORY: Open…
  • User provides a URL and wants to replicate
  • SKILL.md covers Overview, Pipeline, Supporting Artifacts and Plans Directory, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

UI Cloner is an agent skill from ragnar-pwninskjold/tech-snacks. Use when user provides a URL and wants to replicate or clone a website's UI, design, or visual style for their own product. Entry point for the full 4-phase SRIP pipeline.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 14 other files, including reference files (for example `examples/site-dna.example.md`, `references/iterator.md` and `references/phase-1-forensic-audit.md`).

It sits in Frontend & Design, covering UI design and Design to code. The repository describes itself as: A skill library for vibe coders that make cool stuff. The licence is MIT.

When your agent uses it

  • User provides a URL and wants to replicate
  • Clone a websites UI
  • Visual style for their own product

Example prompts

  • “/ui-cloner”

Workflow steps

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

  1. Ask for audit mode selection.
  2. MANDATORY: Open references/phase-1-forensic-audit.md and execute its instructions. Do not begin any forensic work before reading that…

What it can do on your machine

Read from SKILL.md and the folder at commit 2d9a73b. 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

    No scripts in the folder and no shell commands in SKILL.md.

    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

UI Cloner loads about 1.1k tokens when it runs, and up to ~11k if it reads all its reference files. Until then it costs about 45 tokens; SKILL.md has 535 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~45
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~11k

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 ragnar-pwninskjold/tech-snacks at commit 2d9a73b, republished under its MIT licence (© ragnar-pwninskjold). 535 words, ~1,133 tokens.

Download SKILL.mdSave it as .claude/skills/ui-cloner/SKILL.md (or your agent's skills folder). This skill also uses 11 other files; get the full folder from GitHub.
name
ui-cloner
description
Use when user provides a URL and wants to replicate or clone a website's UI, design, or visual style for their own product. Entry point for the full 4-phase SRIP pipeline.

UI Cloner — Site Replication Intelligence Protocol (SRIP)

Overview

You are a Senior Creative Technologist and UI Forensics Expert. Your mission: analyze a target website with clinical precision, interview the user about their brand, and synthesize a one-shot replication prompt a developer can execute to build a pixel-faithful recreation adapted to the user's identity.

Announce at start: "I'm using the ui-cloner skill to run the Site Replication Intelligence Protocol."

Pipeline

Run the 4 phases in strict order. Each phase is defined by a reference document in this skill.

EXTREMELY IMPORTANT — READ THIS CAREFULLY: The reference documents below are not advisory. They are the authoritative procedures for this skill. At the start of each phase you MUST open the corresponding reference file and execute its instructions verbatim — every step, every console snippet, every block scaffold. You may NOT summarize, paraphrase, skip, or infer the procedure from memory. Templates and examples are load-bearing artifacts referenced from inside the reference files; when a reference says "fill the X block" or "see the example," you follow that pointer.

Phase 1 → references/phase-1-forensic-audit.md   (analyze the target URL → Site DNA)
Phase 2 → references/phase-2-brand-interview.md  (12-question brand interview)
Phase 3 → references/phase-3-synthesis.md        (generate the replication prompt)
Phase 4 → references/phase-4-quality-check.md    (verify before delivery)

MANDATORY at each phase boundary: Read the next phase's reference file in full before taking any action for that phase. If you attempt to execute a phase without having opened its reference file in this session, you are operating outside this skill's contract.

Supporting Artifacts

  • templates/ — canonical output shapes for each plan artifact. Reference files tell you WHEN to fill them; templates define WHAT shape the filled artifact must take.
  • examples/ — worked examples for the blocks where abstract field hints are insufficient. Read the example file when a reference file points to it — the example sets the fidelity bar.

Plans Directory

Each phase saves its output as a markdown file inside a plans/ directory in the current project directory (wherever the user is working). Create the directory if it doesn't exist.

plans/
  01-site-dna.md             ← Phase 1 output
  02-brand-interview.md      ← Phase 2 output
  03-replication-prompt.md   ← Phase 3 output
  04-final-prompt.md         ← Phase 4 output
  05-iterator.md             ← Iterator output (if refinement needed)
Show full SKILL.md (231 more words)Show less

Refinement (Post-Pipeline)

If the developer's first build attempt is poor or incomplete, run the iterator. It performs 5 structured passes comparing the current implementation against the Site DNA, producing targeted corrective prompts.

MANDATORY when refinement is requested: You MUST read references/iterator.md in full and follow its 5-pass procedure to the letter. Do not improvise a refinement loop. Do not merge passes. Do not skip any pass even if the implementation appears close to the reference — later passes surface polish issues that kill quality.

Audit Modes

Before starting Phase 1, ask the user which audit mode they want:

Standard Mode — Narrative descriptions of layout, tokens, animations, and interactions. Fast. Good for inspiration and general direction.

High-Fidelity Mode — Structured artifacts: ASCII wireframes, t=Xms animation timelines, property diff tables, state machines, scroll choreography maps. Slower but produces implementation-precision output. Required when the goal is a pixel-faithful clone.

Announce the selected mode: "Running [Standard / High-Fidelity] Mode audit on [URL]."

Store the mode selection as AUDIT_MODE: standard | high-fidelity at the top of plans/01-site-dna.md. The Phase 1 reference uses this flag to determine output format.

Activation

When given a URL:

  1. Ask for audit mode selection.
  2. MANDATORY: Open references/phase-1-forensic-audit.md and execute its instructions. Do not begin any forensic work before reading that reference file end-to-end. The reference file is the authoritative procedure for Phase 1 — not this orchestrator.

Do not ask any other clarifying questions first.

© ragnar-pwninskjold, 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 11 other files (references) in plugins/tech-snacks/skills/ui-cloner of ragnar-pwninskjold/tech-snacks.

  • SKILL.md
  • examples/site-dna.example.md
  • references/iterator.md
  • references/phase-1-forensic-audit.md
  • references/phase-2-brand-interview.md
  • references/phase-3-synthesis.md
  • references/phase-4-quality-check.md
  • templates/brand-interview.template.md
  • templates/final-prompt.template.md
  • templates/iterator.template.md
  • templates/replication-prompt.template.md
  • templates/site-dna.template.md

Open the folder on GitHubat commit 2d9a73b

Compare with similar skills

UI Cloner 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.

UI Cloner compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
UI Cloner this skillragnar-pwninskjold/tech-snacks137—~1.1kAutomated safety check: PassMIT
Figma Design to Codewarpdotdev/warp65k4 repos~2.9kAutomated safety check: PassAGPL-3.0
Tastemaker UI Designcodeswithroh/tastemaker444—~16kAutomated safety check: PassMIT
Build Figmacursor/plugins11k—~961Automated safety check: PassNone
Product Design Workflow BundleXiaomiMiMo/MiMo-Code14k—~721Automated safety check: PassMIT
Stitch UI Designaiskillstore/marketplace4335 repos~2.7kAutomated safety check: PassNone

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Categories

Questions about UI Cloner

What does UI Cloner do?

A skill your agent uses when user provides a URL and wants to replicate or clone a website's UI, design, or visual style for their own product. UI Cloner is an agent skill from ragnar-pwninskjold/tech-snacks. Use when user provides a URL and wants to replicate or clone a website's UI, design, or visual style for their own product.

When should I use UI Cloner?

UI Cloner fits situations like: user provides a URL and wants to replicate; clone a websites UI; visual style for their own product.

How do I install UI Cloner in Claude Code?

Run `npx skills add ragnar-pwninskjold/tech-snacks --skill ui-cloner -a claude-code`. Or copy the skill folder (plugins/tech-snacks/skills/ui-cloner in ragnar-pwninskjold/tech-snacks) into .claude/skills/ui-cloner in your project. Claude Code loads it when a task matches its description.

How do I install UI Cloner in Codex?

Run `npx skills add ragnar-pwninskjold/tech-snacks --skill ui-cloner -a codex`. Or copy the skill folder (plugins/tech-snacks/skills/ui-cloner in ragnar-pwninskjold/tech-snacks) into .agents/skills/ui-cloner in your project. Codex loads it when a task matches its description.

Can I use UI Cloner 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 ragnar-pwninskjold/tech-snacks --skill ui-cloner -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ui-cloner, .gemini/skills/ui-cloner, .github/skills/ui-cloner and .opencode/skills/ui-cloner in your project.

What does UI Cloner need to run?

SKILL.md names no scripts, command-line tools or credentials: UI Cloner is instructions for the agent only.

Does UI Cloner 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 UI Cloner 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 UI Cloner use?

UI Cloner 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 UI Cloner use?

About 1.1k tokens (SKILL.md is roughly 4.5k 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 10k tokens, read only when the agent opens those files.

What are the alternatives to UI Cloner?

Skills that share tags, products or a category with UI Cloner: Figma Design to Code (warpdotdev/warp, 65k stars), Tastemaker UI Design (codeswithroh/tastemaker, 444 stars), Build Figma (cursor/plugins, 11k stars) and Product Design Workflow Bundle (XiaomiMiMo/MiMo-Code, 14k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains UI Cloner?

ragnar-pwninskjold (a GitHub user) maintains it in ragnar-pwninskjold/tech-snacks, which has 137 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on August 18, 2026.

Source: ragnar-pwninskjold/tech-snacks on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.