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Agent skill

Frontend Design Router

by code-yeongyu in code-yeongyu/oh-my-openagent

Routes frontend and UI work through design reference rulesets, with a design-system gate plus layout and print guidance, before any UI code is written.

Custom licenceAuto-check passedFrontend & Design

Install Frontend Design Router

skills CLI
$ npx skills add code-yeongyu/oh-my-openagent --skill frontend -a claude-code

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

GitHub CLI
$ gh skill install code-yeongyu/oh-my-openagent frontend --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/code-yeongyu/oh-my-openagent.git skills-src && mkdir -p .claude/skills && cp -r skills-src/packages/shared-skills/skills/frontend .claude/skills/frontend && 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
frontend
GitHub stars
70k
Token cost
~5.3k tokens
SKILL.md length
2,661 words
Files
34 (incl. scripts, references)
Skills in repo
44
Repo updated
First seen
Licence
Custom licence

At a glance

Routes frontend and UI work through design reference rulesets, with a design-system gate plus layout and print guidance, before any UI code is written.

  • Works in 4 steps: Concrete visual reference: the user… → Greenfield or fresh setup: if the user… → Existing project with DESIGN.md or a… → …
  • Building or restyling a page or component in a frontend app
  • SKILL.md covers Phase 0 — Route (before any UI…, Design System and Component…, Ruleset 1 — design… and Ruleset 2 — perfection…, plus 6 more sections
  • Calls python3 and uv

What it does

This skill acts as a router rather than a rulebook. For any UI task the agent must first name which reference files the request routes to and why each is needed, then read exactly those before touching code. The aim is to avoid generic AI-looking output, and the stated bar is work a senior product designer would ship.

Routing sends any UI implementation, styling or redesign to references/design/README.md first, which enforces two gates: a DESIGN.md design system must exist before any component is written, and React dev tooling (react-grab, react-scan and react-doctor) is installed by default. Layout problems add a layout reference and a named pattern gallery, and paged output such as PDF reports or print stylesheets adds a print reference. The folder also holds files on component catalogs, cloning from a URL, interaction and ambience.

When your agent uses it

  • Building or restyling a page or component in a frontend app
  • Fixing a layout that breaks at a given screen width
  • Producing a print stylesheet or paged PDF output from HTML
  • Establishing a design system before writing components
  • Making an interface look or feel a certain way

Example prompts

  • “Redesign the pricing page so it feels calm and premium.”
  • “The app shell breaks at narrow widths, so fix the layout and scroll ownership.”
  • “Our HTML invoice prints with half-empty pages, so fix the print stylesheet.”
  • “Set up a design system file before we build the settings screens.”

Workflow steps

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

  1. Concrete visual reference: the user supplied a reference — treat it as the visual contract, then handle it by kind
  2. Greenfield or fresh setup: if the user gave no concrete visual reference, design research is a build step with named deliverables — not…
  3. Existing project with DESIGN.md or a component system: read it, follow it, and update it before implementation only when the requested…
  4. Existing project with UI but no DESIGN.md and no reusable component layer: STOP and ask the user one focused question: should you preserve…

What it can do on your machine

Read from SKILL.md and the folder at commit cbd7dd2. 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 1 file in scripts/, which the agent can run.

    Shell commands in SKILL.md call:

    • python3
    • uv

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

  • Network

    No URLs in SKILL.md. Its commands use uv, which can reach the network depending on how they are called.

    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

Frontend Design Router loads about 5.3k tokens when it runs, and up to ~59k if it reads all its reference files. Until then it costs about 52 tokens; SKILL.md has 2,661 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~52
When it runs · the whole SKILL.md, loaded when a task matches
~5.3k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~59k

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); the scripts in this folder are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 2,661 words (~5,345 tokens).

“This file is a router, not a rulebook. The rules live in four rulesets under references/, and reading them is the work, not the preamble to it. Before touching any file, name the references the request routes to and the…”

— opening of SKILL.md by code-yeongyu, Custom licence
name
frontend

Read the full SKILL.md on GitHub

Files

SKILL.md and 33 other files (scripts, references) in packages/shared-skills/skills/frontend of code-yeongyu/oh-my-openagent.

  • SKILL.md
  • .gitignore
  • .npmignore
  • ATTRIBUTION.md
  • LICENSE-Apache-2.0.txt
  • references/design/README.md
  • references/design/_INDEX.md
  • references/design/ambience-skill.md
  • references/design/aside.md
  • references/design/clone-from-url.md
  • references/design/component-catalogs.md
  • references/design/design-system-architecture.md
  • references/design/interaction-skill.md
  • references/design/layout-skill.md
  • references/design/lazyweb.md
  • references/design/print-paged-media.md
  • references/design/react-dev-tooling-skill.md
  • references/design/stylegallery.md
  • references/designpowers
  • … and 15 more

Open the folder on GitHubat commit cbd7dd2

Used in 1 other repository

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders. This page covers the copy in code-yeongyu/oh-my-openagent, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Frontend Design Router 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.

Frontend Design Router compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Frontend Design Router this skillcode-yeongyu/oh-my-openagent70k—~5.3kAutomated safety check: PassCustom licence
Design StyleCastor6/tactus3761 repos~2.1kAutomated safety check: PassApache-2.0
Tailwind CSS Patternsever-works/ever-works1583 repos~1.6kAutomated safety check: NotesAGPL-3.0
Frontend UI FunctionalvictorGPT/vibeusage131—~939Automated safety check: PassMIT
Bryl Minimal Designbryllim/bryl-minimal-design114—~2.9kAutomated safety check: PassMIT
Using Ouds Web Version Major MinorOrange-OpenSource/Orange-Boosted-Bootstrap222—~4.1kAutomated safety check: PassMIT

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Works with

Categories

Questions about Frontend Design Router

What does Frontend Design Router do?

Routes frontend and UI work through design reference rulesets, with a design-system gate plus layout and print guidance, before any UI code is written. This skill acts as a router rather than a rulebook. For any UI task the agent must first name which reference files the request routes to and why each is needed, then read exactly those before touching code.

When should I use Frontend Design Router?

Frontend Design Router fits situations like: building or restyling a page or component in a frontend app; fixing a layout that breaks at a given screen width; producing a print stylesheet or paged PDF output from HTML; establishing a design system before writing components.

How do I install Frontend Design Router in Claude Code?

Run `npx skills add code-yeongyu/oh-my-openagent --skill frontend -a claude-code`. Or copy the skill folder (packages/shared-skills/skills/frontend in code-yeongyu/oh-my-openagent) into .claude/skills/frontend in your project. Claude Code loads it when a task matches its description.

How do I install Frontend Design Router in Codex?

Run `npx skills add code-yeongyu/oh-my-openagent --skill frontend -a codex`. Or copy the skill folder (packages/shared-skills/skills/frontend in code-yeongyu/oh-my-openagent) into .agents/skills/frontend in your project. Codex loads it when a task matches its description.

Can I use Frontend Design Router 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 code-yeongyu/oh-my-openagent --skill frontend -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/frontend, .gemini/skills/frontend, .github/skills/frontend and .opencode/skills/frontend in your project.

What does Frontend Design Router need to run?

Going by SKILL.md and its folder, Frontend Design Router needs the command-line tools its instructions call (python3 and uv).

Does Frontend Design Router access the network?

SKILL.md contains no URLs. Its commands use uv, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Frontend Design Router 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Frontend Design Router use?

Frontend Design Router has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Frontend Design Router use?

About 5.3k tokens (SKILL.md is roughly 21k 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 54k tokens, read only when the agent opens those files.

What are the alternatives to Frontend Design Router?

Skills that share tags, products or a category with Frontend Design Router: Design Style (Castor6/tactus, 376 stars), Tailwind CSS Patterns (ever-works/ever-works, 158 stars), Frontend UI Functional (victorGPT/vibeusage, 131 stars) and Bryl Minimal Design (bryllim/bryl-minimal-design, 114 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Frontend Design Router?

code-yeongyu (a GitHub user) maintains it in code-yeongyu/oh-my-openagent, which has 69,850 GitHub stars. The repository holds 44 skills in this directory. The repository was last updated on October 7, 2026.

Source: code-yeongyu/oh-my-openagent on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.