coding-standards

A set of coding guidelines for TypeScript, JavaScript, React, and Node.js, covering readable code, simple designs, reuse, naming, immutability, and error handling.

In plain words
What is it for?
Use it when writing or reviewing application code, naming variables and functions, sharing logic, avoiding direct data changes, and handling errors.
Why use it?
It gives the coding agent consistent rules for making code easier to read, maintain, and review.

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/codelably/harmony-claude-code/coding-standards
Any agent
npx skills add codelably/harmony-claude-code --skill coding-standards
Clone the repo
git clone --depth 1 https://github.com/codelably/harmony-claude-code

Made for: Claude Code, Codex.

Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,341 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00028 $0.03341
Opus 5 $0.00014 $0.01670
Sonnet 5 $0.00006 $0.00668
Haiku 4.5 $0.00003 $0.00334

Measured 2d ago against content hash 8e0176cbd820, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

coding-standards 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 2d 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.

Makes network callslowCapability

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

const response = await fetch(url)
docs/zh-TW/skills/coding-standards/SKILL.md · 521 lines

How it starts

The opening of the file, as written. The whole thing — 521 lines — stays where its author put it; the contents beside it link to each section on GitHub.

程式碼標準與最佳實務

適用於所有專案的通用程式碼標準。

程式碼品質原則

1. 可讀性優先

  • 程式碼被閱讀的次數遠多於被撰寫的次數
  • 使用清晰的變數和函式名稱
  • 優先使用自文件化的程式碼而非註解
  • 保持一致的格式化

2. KISS(保持簡單)

  • 使用最簡單的解決方案
  • 避免過度工程
  • 不做過早優化
  • 易於理解 > 聰明的程式碼

3. DRY(不重複自己)

  • 將共用邏輯提取為函式
  • 建立可重用的元件
  • 在模組間共享工具函式
  • 避免複製貼上程式設計

4. YAGNI(你不會需要它)

  • 在需要之前不要建置功能
  • 避免推測性的通用化
  • 只在需要時增加複雜度
  • 從簡單開始,需要時再重構

TypeScript/JavaScript 標準

變數命名

// ✅ 良好:描述性名稱
const marketSearchQuery = 'election'
const isUserAuthenticated = true
const totalRevenue = 1000

// ❌ 不良:不清楚的名稱
const q = 'election'
const flag = true
const x = 1000

函式命名

// ✅ 良好:動詞-名詞模式
async function fetchMarketData(marketId: string) { }
function calculateSimilarity(a: number[], b: number[]) { }
function isValidEmail(email: string): boolean { }

// ❌ 不良:不清楚或只有名詞
async function market(id: string) { }
function similarity(a, b) { }
function email(e) { }

不可變性模式(關鍵)

// ✅ 總是使用展開運算符
const updatedUser = {
  ...user,
  name: 'New Name'
}

const updatedArray = [...items, newItem]

// ❌ 永遠不要直接修改
user.name = 'New Name'  // 不良
items.push(newItem)     // 不良

錯誤處理

// ✅ 良好:完整的錯誤處理
async function fetchData(url: string) {
  try {
    const response = await fetch(url)

    if (!response.ok) {
      throw new Error(`HTTP ${response.status}: ${response.statusText}`)
    }

    return await response.json()
  } catch (error) {
    console.error('Fetch failed:', error)
    throw new Error('Failed to fetch data')
  }
}

// ❌ 不良:無錯誤處理
async function fetchData(url) {
  const response = await fetch(url)
  return response.json()
}

Async/Await 最佳實務

// ✅ 良好:可能時並行執行
const [users, markets, stats] = await Promise.all([
  fetchUsers(),
  fetchMarkets(),
  fetchStats()
])

// ❌ 不良:不必要的順序執行
const users = await fetchUsers()
const markets = await fetchMarkets()
const stats = await fetchStats()

型別安全

// ✅ 良好:正確的型別
interface Market {
  id: string
  name: string
  status: 'active' | 'resolved' | 'closed'
  created_at: Date
}

function getMarket(id: string): Promise<Market> {
  // 實作
}

// ❌ 不良:使用 'any'
function getMarket(id: any): Promise<any> {
  // 實作
}

Read the full file on GitHub · 521 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. 2d ago First seen · 521 lines · 28 tokens per session scan A 8e0176cbd820

Subscribe to this mod's changes

coding-standards is a skill published in the GitHub repository codelably/harmony-claude-code (42 stars, last pushed 6mo ago), licensed MIT. It adds 28 tokens to every session and 3,341 once invoked, about $0.0001 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.

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