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Yosemite-Crew: Skill for Claude Code

.agents/skills/frontend-design/SKILL.md

frontend-design is a skill for Claude Code, Codex from YosemiteCrew/Yosemite-Crew. It costs 45 tokens per session (1,581 once invoked), scanned A, original, no licence file.

A guide to building frontend interfaces with the project’s design system, reusable components, visual rules, and styling tokens.

In plain words
What is it for?
Building or changing UI in apps/frontend using components such as Button, Card, and Badge.
Why use it?
It helps new interface changes match the existing look and behave consistently with the rest of the application.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is YosemiteCrew/Yosemite-Crew's own configuration. It tells Claude Code and Codex how to work on Yosemite-Crew itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Yosemite-Crew configures →

not rated 2.0krepo +1 yesterday A scan SkillSpector: pass 45 tokens custom licence
View source ↗ YosemiteCrew/Yosemite-Crew yosemitecrew.com
Reuse

Borrowing it

Nothing to install: this file belongs to YosemiteCrew/Yosemite-Crew. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/YosemiteCrew/Yosemite-Crew/main/.agents/skills/frontend-design/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/YosemiteCrew/Yosemite-Crew

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for frontend-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/yosemitecrew/yosemite-crew/frontend-design/github.svg)](https://agentmods.dev/skills/yosemitecrew/yosemite-crew/frontend-design)
Your own site
<a href="https://agentmods.dev/skills/yosemitecrew/yosemite-crew/frontend-design"><img src="https://agentmods.dev/badge/skills/yosemitecrew/yosemite-crew/frontend-design/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for frontend-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/yosemitecrew/yosemite-crew/frontend-design"><img src="https://agentmods.dev/badge/skills/yosemitecrew/yosemite-crew/frontend-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,581 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.01581
Opus 5.5 $0.00018 $0.00632
Sonnet 5.5 $0.00009 $0.00316
Haiku 4.5 $0.00005 $0.00158

Measured 2mo ago against content hash 38e98cf8b432, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

frontend-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/frontend-design/SKILL.md · 138 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 138 lines · 45 tokens per session scan A 38e98cf8b432

Subscribe to this mod's changes

frontend-design is a skill published in the GitHub repository YosemiteCrew/Yosemite-Crew (2,023 stars, last pushed yesterday), with no licence file. It adds 45 tokens to every session and 1,581 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

CSS and stylingDesign and UXFrontendanimal-healthanimalspetspimspmspractice-management-system
Related

frontend-design compared with skills from other repositories

frontend-design next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
frontend-designYosemiteCrew/Yosemite-CrewSkill2.0kyesterdaynoneA45Claude Code, Codex
anti-slop-designsickn33/agentic-awesome-skillsSkill49kyesterdayMITA34Claude Code
chakra-ui-builderchakra-ui/chakra-uiSkill41kyesterdayMITA214Claude Code, Codex
visual-ralphYeachan-Heo/oh-my-codexSkill34k3d agoMITA52Codex
open-design-setupcompozy/compozySkill2.8kyesterdayMITA67Claude Code, Codex
frontend-visual-qadaymade/claude-code-skillsSkill1.5kyesterdayMITA125Claude Code, Codex
prototype-webnexu-io/html-anythingSkill9.4k24d agoApache-2.0A24Claude Code, Codex