CodeAppsDevelopmentStandard: Skill for Claude Code

.github/skills/spec-builder/SKILL.md

spec-builder is a skill for Claude Code from geekfujiwara/CodeAppsDevelopmentStandard. It costs 60 tokens per session (3,385 once invoked), scanned A, original, MIT.

A workflow for turning source documents into a structured requirements specification, including business, functional, design, and test requirements.

In plain words
What is it for?
It helps scan input files, create intermediate Markdown, and produce an index plus four requirements documents in an organised folder structure.
Why use it?
It provides a consistent place to convert PDFs, presentations, spreadsheets, Word files, and images into documents developers can use.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: names the AskUserQuestion tool.

This is geekfujiwara/CodeAppsDevelopmentStandard's own configuration. It tells Claude Code how to work on CodeAppsDevelopmentStandard 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 CodeAppsDevelopmentStandard configures →

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is ★ 全体構成・コンポーネント選定・構築フェーズは [architecture スキル](../architecture/SKILL.md) を正とする。.

Reuse

Borrowing it

Nothing to install: this file belongs to geekfujiwara/CodeAppsDevelopmentStandard. 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/geekfujiwara/CodeAppsDevelopmentStandard/main/.github/skills/spec-builder/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/geekfujiwara/CodeAppsDevelopmentStandard

Made for: Claude Code.

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 spec-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/geekfujiwara/codeappsdevelopmentstandard/spec-builder/github.svg)](https://agentmods.dev/skills/geekfujiwara/codeappsdevelopmentstandard/spec-builder)
Your own site
<a href="https://agentmods.dev/skills/geekfujiwara/codeappsdevelopmentstandard/spec-builder"><img src="https://agentmods.dev/badge/skills/geekfujiwara/codeappsdevelopmentstandard/spec-builder/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 spec-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/geekfujiwara/codeappsdevelopmentstandard/spec-builder"><img src="https://agentmods.dev/badge/skills/geekfujiwara/codeappsdevelopmentstandard/spec-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,385 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 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 5.1 $0.00060 $0.03385
Opus 5.5 $0.00024 $0.01354
Sonnet 5.5 $0.00012 $0.00677
Haiku 4.5 $0.00006 $0.00338

Measured 10d ago against content hash 7eb1c1a04d3e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spec-builder 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 10d ago.

The scan reads SKILL.md. This mod also ships 5 executable files (scripts/convert_documents.py, scripts/document_io.py, scripts/organize_input.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.

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.

.github/skills/spec-builder/SKILL.md · 208 lines

How it starts

The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.

仕様書作成スキル(一次情報 → 要件定義書)

office ドキュメント(PDF / PowerPoint / Excel / Word など)は anthropics/skills で読み取り、
画像ファイル(PNG/JPG 等)は agent-ocr で OCR する。

フォルダ構造

spec/                          ← スキル専用ディレクトリ
├── input/                     # 一次資料。クイックスタートではルートの業務資料を安全に移動・整理
├── output/                    # 全出力はここに入る(ユーザーが参照)
│   ├── staging/               # ファイル単位の中間 markdown
│   └── docs/                  # 統合要件定義書 5 点
│       ├── index.md           # ドキュメント一覧・開発利用フロー
│       ├── business-requirements.md
│       ├── functional-requirements.md
│       ├── design-requirements.md
│       └── test-requirements.md
└── .cache/                    # システム内部用(ユーザーは触らない)
    ├── conversion-checklist.json
    ├── pending_ocr.json
    └── pending_skills.json

最初の依頼を簡単にする

このスキルは 引数なしでも開始できる。

  • 既定入力: spec/input/
  • 既定 staging 出力: spec/output/staging/
  • 既定 docs 出力: spec/output/docs/
  • 既定 checklist: spec/.cache/conversion-checklist.json
  • --input / --staging / --docs(互換: --output)/ --checklist を指定した場合はそのパスを優先する
  • spec/input/ に変換対象が見つからない場合、scripts/convert_documents.py はワークスペース・フォルダ全体をスキャンし、変換候補になりうるファイルがないか確認する。候補が見つかった場合は一覧を提示するので、spec/input/ へ移動するか --input で対象パスを指定する
  • 通常は元資料をその場所で読み、--input で指定する。クイックスタートの継続が承認された場合は、 下記の手順でルート直下の業務資料を spec/input/ へ整理する。その他の移動・削除は利用者の明示依頼が必要。

クイックスタートから呼ばれた場合

standard/references/quickstart.md の資料探索結果を引き継いで実行する。 .github に同梱された標準・サンプル、依存パッケージ、生成物、一時 clone、認証ファイルは業務資料ではない。 認証後の要望確認への継続回答を引き継ぎ、ルート直下の業務資料を spec/input/ へ移動・整理する。 エージェントが対象を選び、scripts/organize_input.py --workspace <workspace> --file "<document>" で計画し、 同じ引数に --apply を付けて実行する。複数ファイルは --file を繰り返す。 全件を事前検証し、同名ファイル・symlink・ルート外の指定・運用文書(README / AGENTS / LICENSE 等)を拒否する。 内容を照合してから元の場所のファイルを移し、失敗時は原本を保持してエラーを報告する。移動先・元の場所を記録する。 サブフォルダーの資料は元の場所を --input で参照してよい。原本の内容と承認済み仕様は保護する。 変換・統合後は architecture・テンプレート選定・開発環境へのフル構成デプロイ・実動作検証まで継続する。 業務資料から抽出した事実を推測で書き換えず、業界知識による補完は別の「仮説・推奨」として記録する。 資料なしなら空の変換結果で完了とせず、ワークスペース名から Step 0 で提案・選択された案を具体化し、 architecture の提案先行モードへ進む。白紙の業務ヒアリングは始めない。 既知事項や通常の実装判断で AskUserQuestion を繰り返さない。資料から分かることを自分で調べ、 本人の判断が不可欠な不足事項だけを確認する。

Read the full file on GitHub · 208 lines

Files

What ships with it

7 files 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. 10d ago Changed · +9 lines 7eb1c1a04d3e
  2. 17d ago Changed · +9 lines 2fcb6729f666
  3. 2mo ago First seen · 190 lines · 60 tokens per session scan A d7939165b089

Subscribe to this mod's changes

spec-builder is a skill published in the GitHub repository geekfujiwara/CodeAppsDevelopmentStandard (78 stars, last pushed yesterday), licensed MIT. It adds 60 tokens to every session and 3,385 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.

Related

spec-builder compared with skills from other repositories

spec-builder next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
spec-buildergeekfujiwara/CodeAppsDevelopmentStandardSkill78yesterdayMITA60Claude Code
orbit-notionnexu-io/open-designSkill106kyesterdayApache-2.0A117Claude Code, Codex
instrument-data-to-allotropeanthropics/knowledge-work-pluginsSkill35k2d agoApache-2.0A123Claude Code
baoyu-youtube-transcriptJimLiu/baoyu-skillsSkill27k4d agoMITA107Claude Code
apify-youtube-transcript-scrapersickn33/agentic-awesome-skillsSkill49kyesterdayMITA48Claude Code
legal-holdanthropics/claude-for-legalSkill9.9k3d agoApache-2.0A68Claude Code
ppt-reviewOrkas-AI/OrkasSkill9.0ktodayMITA2Claude Code, Codex