agentmods.dev

CodeAppsDevelopmentStandard: Skill for Claude Code

.github/skills/code-apps/SKILL.md

code-apps is a skill for Claude Code, Codex from geekfujiwara/CodeAppsDevelopmentStandard. It costs 112 tokens per session (21,215 once invoked), scanned A, original, MIT.

A guide for building Power Apps Code Apps: browser-based applications hosted in Microsoft Power Apps. It uses TypeScript, React, Tailwind CSS, and Dataverse, Microsoft's data platform.

In plain words
What is it for?
Use it to design screens, create a React and Vite app, connect it to Dataverse, configure security-related browser rules, send email, and deploy updates.
Why use it?
It gives a defined path from screen design to deployment and data connection, reducing uncertainty when setting up and updating these applications.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: names the AskUserQuestion tool.

This is geekfujiwara/CodeAppsDevelopmentStandard's own configuration. It tells Claude Code and Codex 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 [`mobile-apps`](../mobile-apps/SKILL.md) へ切り替える。Native は Private Preview で本番利用できない。.

not rated 78repo +3 changed 2d ago A scan SkillSpector: warn 112 tokens original MIT
View source ↗ geekfujiwara/CodeAppsDevelopmentStandard
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/code-apps/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/geekfujiwara/CodeAppsDevelopmentStandard

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 code-apps

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/geekfujiwara/codeappsdevelopmentstandard/code-apps"><img src="https://agentmods.dev/badge/skills/geekfujiwara/codeappsdevelopmentstandard/code-apps.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 112 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 21,215 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 warn 7 Sept 2026
SkillSpector: 30 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 118
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 138
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 257
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • medium MCP Rug Pull · line 117
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 122
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 173
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 174
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 176
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 179
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 194
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 195
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 238
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 250
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 251
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 252
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 262
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 265
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 278
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 282
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 295
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
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 $0.00112 $0.21215
Opus 5.5 $0.00045 $0.08486
Sonnet 5.5 $0.00022 $0.04243
Haiku 4.5 $0.00011 $0.02122

Measured 2d ago against content hash 20a2ef152e34, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-apps 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 2d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (references/patch-nameutils.cjs), 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/code-apps/SKILL.md · 887 lines

How it starts

The opening of the file, as written. The whole thing — 887 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Apps 開発スキル

Power Apps Code Apps（コードファースト）を TypeScript + React + Tailwind CSS で開発する。 UI 設計・CSP 構成・メール送信パターンまで Code Apps 開発の全領域をカバーする統合スキル。

プラント・設備の JSON 駆動設計: モジュール設計パターン と 追加テンプレート を参照。敷地・ユニット・ポート接続、CSP 対応検証器、 Python 候補生成、Dataverse 改訂・提案レビューを再利用できる。既存アプリへのアドオンであり scaffold 元ではない。 型・形状・共有保存の単独テストを先に通し、導入後のブラウザー/Teams/一般利用者権限は別ゲートで実測する。

設計と保守を統合する場合: Plant Design & Maintenance サンプル を参照。 既存画面・合成3Dモデル・部位別の故障／修理・ヒートマップ・AI候補の変更前後比較を同梱。 npm ci → Python依存導入 → npm run generate → npm run predeploy で単体検証できる。 AI候補は確定まで下書きに適用せず、共有保存と分離する。外部接続は既定無効。Code App は Dataverse と Copilot Studio の生成サービスだけへ接続し、MCP Server は Copilot Studio のツールとして構成する。

3D モデル（建物・家具・設備）を扱う場合: 3D 資産の共通利用 を参照。 既定 CSP で読める資産の持ち方（画像は img-src 'self'、JSON は import、GLB の扱い）、素材ライブラリの色合わせ・ライセンス、 契約検証（scripts/validate_3d_assets.py）とヘッドレス描画確認（scripts/capture_3d.mjs。ソフトウェア描画で黒くなる問題を含む）、 実在の GLB（テクスチャ埋め込み）を既定 CSP の中で表示する方法（?inline + createImageBitmap のプラグイン）を再利用できる。 工事・設備の進捗を 3D で見せる場合（完成形を破線、施工中をクリッピングで立ち上げる、部位と工程の対応、GLB の書き出し）は 3D 施工進捗モデル を参照。drei の <Environment preset> は CSP で失敗するとアプリ全体が落ちるので使わない（チェック 13 が検出）。

図面レビューを非同期会話で回す場合: 図面コミュニケーション アドオン と PoC サンプル を参照。版付き図面 JSON と検証器、A3 の SVG 描画、 注釈／タスク、候補の差分・採用・Undo、会話の相関コントラクト（会話 ID・ターン ID・編集バージョン・基準ハッシュ、重複ターン拒否）、 A3 PDF を生成する Python スキルを再利用できる。Dataverse 未接続時は DEMO ワーカーであることを UI に明示し、実エージェント応答と偽らない。

[!NOTE] 本スキルは React + Vite の Web Code Apps 用。Expo／React Native、camera／barcode／location 等の 端末ネイティブ機能、Power Apps Developer app、Wrap が要件なら mobile-apps へ切り替える。Native は Private Preview で本番利用できない。

[!NOTE] Microsoft Learn の現行概要では、Code Apps は React / Vue などの SPA を Power Apps 上でホストする仕組み とされている。 この開発標準はその中でも React ベース実装に標準化したガイドであり、他フレームワーク一般論ではなく、このリポジトリのテンプレートと運用実績に基づく推奨事項をまとめている。

Read the full file on GitHub · 887 lines

Files

What ships with it

60 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. 2d ago Changed · +2 lines 20a2ef152e34
  2. 9d ago Changed · +4 lines 6d94ee2699fc
  3. 12d ago Changed · +4 lines 4c369115b90e
  4. 16d ago Changed · +53 lines 147d07879f76
  5. 19d ago Changed · +14 lines · +30 tokens per session bab10c0db499
  6. 1mo ago Changed · +7 lines 5fa835db84d2
  7. 1mo ago Changed · +4 lines 5e5b7d425350
  8. 1mo ago Changed · +2 lines 10489f266892
  9. 1mo ago Changed · +28 lines a04fe4629955
  10. 1mo ago First seen · 769 lines · 82 tokens per session scan A 8fb4dbb0e7d1

Subscribe to this mod's changes

code-apps is a skill published in the GitHub repository geekfujiwara/CodeAppsDevelopmentStandard (78 stars, last pushed 2d ago), licensed MIT. It adds 112 tokens to every session and 21,215 once invoked, about $0.0004 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.

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