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.
npx agentmods add instructions/chatwork/chatwork-mcp-server/claude-mdgit clone --depth 1 https://github.com/chatwork/chatwork-mcp-serverWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00670 | $0.00670 |
| Opus 5 | $0.00335 | $0.00335 |
| Sonnet 5 | $0.00134 | $0.00134 |
| Haiku 4.5 | $0.00067 | $0.00067 |
Grade A, and why
chatwork-mcp-server 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 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.
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.
What it actually says
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
開発コマンド
ビルドとテスト
npm run build- esbuildでTypeScriptを単一のESMファイルにバンドルnpm run dev- ビルドをwatch モードで実行（開発時）npm run test- Vitestでテスト実行npm run type-check- TypeScript型チェックnpm run lint- ESLint + Prettier チェック
環境設定
- プロジェクトルートに
.env.testファイルが必要（Vitest用） CHATWORK_API_TOKEN環境変数が必要
アーキテクチャ概要
MCP サーバー実装
このプロジェクトは Chatwork API を Model Context Protocol (MCP) 経由で操作できるサーバーです。
主要コンポーネント
src/index.ts- エントリーポイント（StdioServerTransport でMCPサーバーを起動）src/server.ts- MCPサーバー設定と全ツール定義（40個以上のChatwork操作）src/chatworkClient.ts- Chatwork API v2 クライアント実装src/schema.ts- Zod スキーマ定義（全APIエンドポイントのパラメータ検証）src/toolCallbacks.ts- 各MCPツールの実装（APIコール→レスポンス変換）
提供機能
- ユーザー情報（自分の情報、ステータス、タスク一覧、コンタクト一覧）
- チャット管理（作成、取得、更新、削除/退席、メンバー管理）
- メッセージ操作（一覧、投稿、既読/未読、取得、更新、削除）
- タスク管理（一覧、作成、取得、ステータス更新）
- ファイル管理（一覧、ファイル情報取得）
- 招待リンク管理（取得、作成、更新、削除）
- コンタクト承認依頼（一覧、承認、拒否）
データフロー
- MCP クライアント（Claude等）がツール呼び出し
server.tsでツール定義とスキーマ検証toolCallbacks.tsでパラメータ処理chatworkClient.tsでChatwork API v2 呼び出し- レスポンスをMCP形式に変換して返却
設定とデプロイ
- npm パッケージとして
@chatwork/mcp-serverで公開 dist/index.jsが実行可能バイナリ- ES2022 modules、bundler resolution使用
- 厳密なTypeScript設定（@tsconfig/strictest）
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.
- 2d ago First seen · 58 lines · 670 tokens per session scan A c2e951f16f71
chatwork-mcp-server CLAUDE.md is an instructions file published in the GitHub repository chatwork/chatwork-mcp-server (43 stars, last pushed 19d ago), licensed MIT. It adds 670 tokens to every session, about $0.0034 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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