product-starter CLAUDE.md

product-starter CLAUDE.md is an instructions file for coding agents from jujunjun110/product-starter. It costs 1,104 tokens per session, scanned A, original, MIT.

Claude Code instructions for jujunjun110/product-starter, covering product starter, 使い方(利用者向け), コマンド一覧, claude code への指示(利用者は読まなくてok) and アーキテクチャ.

Instructions file

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 instructions/jujunjun110/product-starter/claude-md
Clone the repo
git clone --depth 1 https://github.com/jujunjun110/product-starter

Wrote this? Show the measurements

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agentmods badge for product-starter CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/jujunjun110/product-starter/claude-md.svg)](https://agentmods.dev/instructions/jujunjun110/product-starter/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/jujunjun110/product-starter/claude-md"><img src="https://agentmods.dev/badge/instructions/jujunjun110/product-starter/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,104 This file is loaded in full into every session.
When invoked 1,104 The same file — it is already loaded in full.
Security scan A 0 findings. 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 $0.01104 $0.01104
Opus 5 $0.00552 $0.00552
Sonnet 5 $0.00221 $0.00221
Haiku 4.5 $0.00110 $0.00110

Measured today against content hash dc44b0ee1681, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

product-starter CLAUDE.md 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 today.

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.

CLAUDE.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Product Starter

使い方(利用者向け)

  • pnpm dev で開発サーバーを起動
  • pnpm verify で品質チェック(変更後に実行)
  • 機能を追加したいときは Claude Code に「〇〇な機能を作って」と指示するだけでOK
  • テーブルを追加したいときは「〇〇テーブルを追加して」と指示
  • UIを作りたいときは「〇〇な画面を作って」と指示
  • エラーが出たらエラーメッセージを貼り付けて「直して」と指示

コマンド一覧

pnpm dev               # 開発サーバー起動
pnpm verify            # lint → prisma generate → typecheck → unit test → depcruise
pnpm test:unit         # Unit テスト
pnpm test:integration  # Integration テスト(要 DATABASE_URL, INTEGRATION_TEST=true)
pnpm lint:fix          # 自動フォーマット
pnpm db:migrate        # DBマイグレーション作成・適用
pnpm knip              # 未使用コード検出

Claude Code への指示(利用者は読まなくてOK)

アーキテクチャ

pnpm workspace monorepo。apps/webapp/ に Next.js 15 App Router アプリ。

バックエンド (src/backend/) は DDD 4層構造:

依存方向: presentation → application → domain ← infrastructure
  • domain — ビジネスルール。外部依存なし。最内層
  • application — UseCase。domain のみ依存(infrastructure 直接参照禁止、Gateway interface 経由)
  • infrastructure — Gateway/Repository 実装。domain の interface を implements
  • presentation — composition(唯一の DI ポイント、全層参照可)、loaders(読み取り)、actions(副作用)

ファイル配置ルール

src/backend/
├── domain/
│   ├── models/          # ドメインモデル (.model.ts)
│   ├── services/        # ドメインサービス (.service.ts)
│   ├── gateways/        # Gateway interface (.gateway.ts)
│   └── repositories/    # Repository interface (.repository.ts)
├── application/
│   └── usecases/        # UseCase (.usecase.ts)
├── infrastructure/
│   ├── adapters/        # Gateway 実装 (.adapter.ts) — 本番 + Stub
│   ├── repositories/    # Repository 実装 (.repository.ts)
│   └── db/              # DB接続 (prisma-client.ts)
└── presentation/
    ├── composition/     # DI組み立て (.composition.ts)
    ├── loaders/         # データ取得 (.loader.ts)
    └── actions/         # 副作用 (.action.ts, 'use server')

Key Rules

  • ファイル命名: kebab-case + レイヤーサフィックス
  • Rich Domain Model 必須。バリデーション・生成はモデル自身のメソッドで行う
  • サービス(UseCase, Domain Service)はクラスベース + コンストラクタ DI。関数エクスポート禁止
  • Domain 層のエラーは Result<T, E> 型で返す。Application/Infrastructure は throw
  • 外部 API の Gateway は必ず Stub 実装を用意し、Composition で環境変数に応じて切り替え
  • index.ts バレルエクスポート禁止
  • API Route 原則不使用(loaders + Server Actions パターン)
  • Server Component デフォルト。'use client' は必要な場合のみ

Read the full file on GitHub · 94 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. today First seen · 94 lines · 1,104 tokens per session scan A dc44b0ee1681

Subscribe to this mod's changes

product-starter CLAUDE.md is an instructions file published in the GitHub repository jujunjun110/product-starter (17 stars, last pushed 2mo ago), licensed MIT. It adds 1,104 tokens to every session, about $0.0055 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 2026-09-03.

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