mui

A set of coding conventions for MUI, also called Material UI, a React component library for building interfaces. It covers imports, the sx styling prop, styled components, and themes.

In plain words
What is it for?
Use it when writing or reviewing MUI components, choosing imports, applying responsive styles, and configuring themes.
Why use it?
It helps keep MUI code consistent and avoids common patterns that can increase bundle size or make styling harder to maintain.

Skill for Claude CodeCodex

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/ggombee/code-forge/mui
Any agent
npx skills add ggombee/code-forge --skill mui
Clone the repo
git clone --depth 1 https://github.com/ggombee/code-forge

Made for: Claude Code, Codex.

Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,556 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00032 $0.01556
Opus 5 $0.00016 $0.00778
Sonnet 5 $0.00006 $0.00311
Haiku 4.5 $0.00003 $0.00156

Measured yesterday against content hash c7d2a1707a21, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mui 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 yesterday.

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.

modules/design-systems/mui/SKILL.md · 266 lines

How it starts

The opening of the file, as written. The whole thing — 266 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MUI (Material UI) 컨벤션


Import 패턴

// ✅ 좋은 예: 트리 쉐이킹이 가능한 named import
import Button from '@mui/material/Button';
import TextField from '@mui/material/TextField';
import Box from '@mui/material/Box';

// ✅ 아이콘 import
import SearchIcon from '@mui/icons-material/Search';
import CloseIcon from '@mui/icons-material/Close';

// ❌ 나쁜 예: 배럴 import (번들 크기 증가 가능)
import { Button, TextField, Box } from '@mui/material';

sx prop 사용

sx prop은 MUI 컴포넌트에 인라인 스타일을 적용하는 방법이다.

import Box from '@mui/material/Box';
import Typography from '@mui/material/Typography';

// ✅ 간단한 스타일: sx prop 사용
function OrderCard() {
  return (
    <Box
      sx={{
        padding: 2,           // theme.spacing(2) = 16px
        marginBottom: 1,
        backgroundColor: 'background.paper',
        borderRadius: 1,
        boxShadow: 1,
        '&:hover': {
          boxShadow: 3,
        },
      }}
    >
      <Typography
        variant="h6"
        sx={{
          color: 'text.primary',
          fontWeight: 'bold',
        }}
      >
        주문 제목
      </Typography>
    </Box>
  );
}
// 반응형 스타일 (breakpoints)
<Box
  sx={{
    width: {
      xs: '100%',   // mobile
      sm: '50%',    // tablet
      md: '33%',    // desktop
    },
    fontSize: { xs: 14, md: 16 },
  }}
/>

styled() API

복잡한 스타일이나 재사용 컴포넌트에는 styled()를 사용한다.

import { styled } from '@mui/material/styles';
import Button from '@mui/material/Button';
import Box from '@mui/material/Box';

// ✅ styled()로 커스텀 컴포넌트 생성
const StyledButton = styled(Button)(({ theme }) => ({
  borderRadius: theme.spacing(3),
  padding: theme.spacing(1, 3),
  textTransform: 'none',
  '&:hover': {
    backgroundColor: theme.palette.primary.dark,
  },
}));

const CardContainer = styled(Box)(({ theme }) => ({
  padding: theme.spacing(2),
  borderRadius: theme.shape.borderRadius,
  backgroundColor: theme.palette.background.paper,
  [theme.breakpoints.down('sm')]: {
    padding: theme.spacing(1),
  },
}));

Read the full file on GitHub · 266 lines

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 First seen · 266 lines · 32 tokens per session scan A c7d2a1707a21

Subscribe to this mod's changes

mui is a skill published in the GitHub repository ggombee/code-forge (13 stars, last pushed 2mo ago), licensed MIT. It adds 32 tokens to every session and 1,556 once invoked, about $0.0002 per session on Opus 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.

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