cowork

cowork is a skill for Claude Code, Codex from geekfujiwara/CodeAppsDevelopmentStandard. It costs 116 tokens per session (8,619 once invoked), scanned A, original, MIT.

A development workflow for packaging a Microsoft Copilot Cowork add-on as a Microsoft 365 app. It combines an agent skill with a Dataverse connector, allowing Cowork to use business data when the required company and preview access is enabled.

In plain words
What is it for?
It is for creating Cowork plug-ins that connect to Dataverse, preparing their app package, configuring Microsoft Entra ID sign-in, and publishing them through Microsoft administration tools.
Why use it?
It guides the authentication, packaging, validation, and publishing steps needed to make a custom Cowork add-on available in a Microsoft 365 environment.

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/geekfujiwara/codeappsdevelopmentstandard/cowork
Any agent
npx skills add geekfujiwara/CodeAppsDevelopmentStandard --skill cowork
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 cowork

README.md
[![agentmods](https://agentmods.dev/badge/skills/geekfujiwara/codeappsdevelopmentstandard/cowork.svg)](https://agentmods.dev/skills/geekfujiwara/codeappsdevelopmentstandard/cowork)
Your own site
<a href="https://agentmods.dev/skills/geekfujiwara/codeappsdevelopmentstandard/cowork"><img src="https://agentmods.dev/badge/skills/geekfujiwara/codeappsdevelopmentstandard/cowork.svg" alt="Measured on agentmods" height="20"></a>
Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,619 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 $0.00116 $0.08619
Opus 5 $0.00058 $0.04310
Sonnet 5 $0.00023 $0.01724
Haiku 4.5 $0.00012 $0.00862

Measured 4d ago against content hash 7bdd366939b7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cowork 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 4d ago.

The scan reads SKILL.md. This mod also ships 6 executable files (scripts/build_agent_package.ps1, scripts/diagnose_cowork_connector.py, scripts/diagnose_dlp_block.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/cowork/SKILL.md · 447 lines

How it starts

The opening of the file, as written. The whole thing — 447 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cowork プラグイン開発(Dataverse MCP セット)

目的特化型の Copilot Cowork プラグイン(M365 アプリパッケージ .zip)を作る。 ビジネススキル(SKILL.md)と Dataverse MCP コネクタをセットにし、Entra ID の OAuth 2.0 認可コードフロー認証で Cowork から Dataverse を直接操作できるようにする。

前提: 利用テナントが Frontier プレビュー に参加していること。 会社環境で Cowork の利用が許可されている場合のみこのスキルを使用してください。利用可否が不明な場合は管理者に確認してください。 異常系・トラブルシュートは references/troubleshooting.md を参照。

パッケージ構成(Skills + remote connector)

<plugin-root>/
├── manifest.json                 # M365 Unified App Manifest v1.28
├── color.png                     # 192×192 フルカラーアイコン
├── outline.png                   # 32×32 アウトラインアイコン
├── build-package.ps1             # .zip 生成(検証付き)
└── skills/
    └── <skill-name>/             # kebab-case。フォルダ名 = SKILL.md の name と一致必須
        └── SKILL.md              # frontmatter(name/description) + ワークフロー本文

前提条件(最初に確認)

  1. 環境で Microsoft Cowork が許可されていること python .github/skills/standard/scripts/check_mcp_client.py cowork → ✅ なら OK。 未許可なら Power Platform 管理センター → 環境 → allowedmcpclient で有効化。
  2. Frontier 参加(管理者も Copilot → Settings → Frontier に登録)。
  3. ツール: Python 3(auth_helper.py / アイコン生成)、PowerShell(パッケージビルド)。

スキル同梱スクリプト(再利用)

scripts/ のスクリプトは汎用化されており、どのテナント・環境でも .envTENANT_ID / DATAVERSE_URL / PUBLISHER_PREFIX / COWORK_OAUTH_CLIENT_ID)を参照して動作する。

スクリプト 用途
scripts/setup_entra_oauth_graph.py (推奨) Entra OAuth クライアントアプリを Microsoft Graph API 経由で作成。auth_helper.py のキャッシュ済み認証を利用するため追加のデバイスコード認証が不要(Step 3)
scripts/setup_entra_oauth.ps1 (代替)az CLI 経由で同等の処理。az login のデバイスコード認証が必要(Step 3)
scripts/register_mcp_client.py Client ID を Dataverse 許可 MCP クライアント(allowedmcpclients)に登録・有効化・確認(Step 4)
scripts/diagnose_cowork_connector.py アプリ登録・admin consent・allowedmcpclients の3層をまとめて診断(Step 4→5 の間で実行推奨)
scripts/build_agent_package.ps1 .envCOWORK_OAUTH_REGISTRATION_ID(引用符付きでも可)を manifest.json のプレースホルダーに注入し、必須ファイルを検証して .zip を生成(Step 7)

Read the full file on GitHub · 447 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. 4d ago First seen · 447 lines · 116 tokens per session scan A 7bdd366939b7

Subscribe to this mod's changes

cowork is a skill published in the GitHub repository geekfujiwara/CodeAppsDevelopmentStandard (60 stars, last pushed today), licensed MIT. It adds 116 tokens to every session and 8,619 once invoked, about $0.0006 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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