Borrowing it
Nothing to install: this file belongs to onikan27/claude-code-monitor. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/onikan27/claude-code-monitor/main/CLAUDE.mdgit clone --depth 1 https://github.com/onikan27/claude-code-monitorWrote 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.
[](https://agentmods.dev/instructions/onikan27/claude-code-monitor/claude-md)<a href="https://agentmods.dev/instructions/onikan27/claude-code-monitor/claude-md"><img src="https://agentmods.dev/badge/instructions/onikan27/claude-code-monitor/claude-md/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.
<a href="https://agentmods.dev/instructions/onikan27/claude-code-monitor/claude-md"><img src="https://agentmods.dev/badge/instructions/onikan27/claude-code-monitor/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01332 | $0.01332 |
| Opus 5 | $0.00666 | $0.00666 |
| Sonnet 5 | $0.00266 | $0.00266 |
| Haiku 4.5 | $0.00133 | $0.00133 |
Grade B, and why
claude-code-monitor CLAUDE.md scanned grade B with 1 finding 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 12d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
- `~/.claude/settings.json` - Claude Codeのフック設定(`ccm setup`で自動設定) How it starts
The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Development Commands
npm run dev # 開発モード(ホットリロード付き)
npm run build # TypeScriptコンパイル
npm start # コンパイル済みJSを実行
# テスト
npm run test # テスト実行(単発)
npm run test:watch # テスト実行(ウォッチモード)
npm run test:coverage # カバレッジ付きテスト
npx vitest tests/handler.test.ts # 特定ファイルのテスト
npx vitest -t "updateSession" # 特定テスト名で絞り込み
# コード品質
npm run lint # biomeでリントチェック
npm run lint:fix # リント自動修正
npm run format # コードフォーマット
npm run typecheck # 型チェックのみ
フックイベントのテスト
# stdinからJSONを渡してフック処理をテスト
echo '{"session_id":"test-123","cwd":"/tmp"}' | npx tsx src/bin/ccm.tsx hook PreToolUse
Architecture
Claude Codeの複数セッションをリアルタイム監視するmacOS専用CLIツール。Ink(React for CLI)を使用したTUIとファイルベースの状態管理で動作する。
重要なファイルパス
~/.claude-monitor/sessions.json- セッション状態の永続化ファイル~/.claude/settings.json- Claude Codeのフック設定(ccm setupで自動設定)~/.claude/projects/*/TRANSCRIPT.md- 各セッションの会話履歴
データフロー
- Hook受信: Claude Codeがフックイベント(PreToolUse, PostToolUse, Notification, Stop, UserPromptSubmit)を発火
- 状態更新:
ccm hook <event>コマンドがstdinからJSONを受け取り、~/.claude-monitor/sessions.jsonを更新 - UI更新: chokidarでファイル変更を検知し、Dashboardコンポーネントが再描画
- モバイルWeb同期: WebSocketで接続中のクライアントにセッション更新をブロードキャスト
ディレクトリ構成
src/bin/ccm.tsx- CLIエントリーポイント(Commanderでコマンド定義)src/hook/handler.ts- フックイベント処理(stdin読み取り→状態更新)src/store/file-store.ts- セッション状態の永続化(JSON読み書き、TTY生存確認)src/setup/index.ts-~/.claude/settings.jsonへのフック自動設定src/server/index.ts- HTTP + WebSocketサーバー(モバイルWeb用)src/components/- InkベースのReactコンポーネント(Dashboard, SessionCard, Spinner)src/hooks/useSessions.ts- ファイル変更監視付きのReactフックsrc/hooks/useServer.ts- モバイルサーバー起動用フックsrc/utils/focus.ts- AppleScriptによるターミナルフォーカス機能src/utils/status.ts- ステータス表示ユーティリティsrc/types/index.ts- 型定義(HookEvent, Session, SessionStatus, StoreData)public/index.html- モバイルWeb UI(静的HTML)
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.
- 12d ago First seen · 109 lines · 1,332 tokens per session scan B bff554340a5b
claude-code-monitor CLAUDE.md is an instructions file published in the GitHub repository onikan27/claude-code-monitor (307 stars, last pushed 7mo ago), licensed MIT. It adds 1,332 tokens to every session, about $0.0067 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).