frontend

frontend is a skill for Claude Code, Codex from code-yeongyu/oh-my-openagent. It costs 49 tokens per session (4,451 once invoked), scanned A, original, no licence file.

A required guide for building and reviewing websites and user interfaces, including React pages, visual design, and web performance.

In plain words
What is it for?
Use it when creating or redesigning pages and components, setting up React interfaces, auditing performance, or doing visual quality checks.
Why use it?
It provides rules for making interface work consistent, usable, visually polished, and checked against browser performance measures.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/code-yeongyu/oh-my-openagent/frontend
Any agent
npx skills add code-yeongyu/oh-my-openagent --skill frontend
Clone the repo
git clone --depth 1 https://github.com/code-yeongyu/oh-my-openagent

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/code-yeongyu/oh-my-openagent/frontend.svg)](https://agentmods.dev/skills/code-yeongyu/oh-my-openagent/frontend)
Your own site
<a href="https://agentmods.dev/skills/code-yeongyu/oh-my-openagent/frontend"><img src="https://agentmods.dev/badge/skills/code-yeongyu/oh-my-openagent/frontend.svg" alt="Measured on agentmods" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,451 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
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 $0.00049 $0.04451
Opus 5 $0.00024 $0.02226
Sonnet 5 $0.00010 $0.00890
Haiku 4.5 $0.00005 $0.00445

Measured yesterday against content hash 417eebfd3ff6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

frontend scanned grade A with 1 finding 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 yesterday.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/perfection/lighthouse-audit.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| Interaction or motion work — micro-interactions, animated components, transitions, gestures, hover/press/state feedback, "make it feel alive" | ALSO `references/design/interaction-skill.md`. The beui.dev catalog is the
packages/shared-skills/skills/frontend/SKILL.md · 152 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

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. yesterday Changed · -134 tokens per session 417eebfd3ff6
  2. 6d ago First seen · 152 lines · 183 tokens per session scan A 159c32005214

Subscribe to this mod's changes

frontend is a skill published in the GitHub repository code-yeongyu/oh-my-openagent (68,736 stars, last pushed today), with no licence file. It adds 49 tokens to every session and 4,451 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.