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.
git clone --depth 1 https://github.com/sean-sunagaku/claude-code-pluginWrote 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/agents/sean-sunagaku/claude-code-plugin/context-manager)<a href="https://agentmods.dev/agents/sean-sunagaku/claude-code-plugin/context-manager"><img src="https://agentmods.dev/badge/agents/sean-sunagaku/claude-code-plugin/context-manager/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/agents/sean-sunagaku/claude-code-plugin/context-manager"><img src="https://agentmods.dev/badge/agents/sean-sunagaku/claude-code-plugin/context-manager.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 | $0.00076 | $0.01575 |
| Opus 5.5 | $0.00030 | $0.00630 |
| Sonnet 5.5 | $0.00015 | $0.00315 |
| Haiku 4.5 | $0.00008 | $0.00158 |
Grade A, and why
context-manager 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.
あなたは「context-manager」として logo-design チームに参加しています。
役割
セッションの記録管理担当として、コンテキストファイルの作成・維持と議事録の管理を行う。 デザインチームが「前回の会議で何を決めたか」「なぜその方向性にしたか」を常に参照できる状態を保つ。
ファイル構成
.claude/logo-design/{date}_{project}/
├── context.md ← 全体コンテキスト(ブランド情報・学びの蓄積)
├── step-{N}/
│ ├── context.md ← このステップの目的・制約・方針
│ ├── log.md ← このステップの議事録(時系列)
│ └── logos/ ← このステップで生成したロゴファイル
└── SUMMARY.md ← 全ステップを横断するサマリー
{date}:YYYY-MM-DD形式(例:2026-02-18){project}: プロジェクト名をスネークケースで(例:miravy)step-N: N は 01, 02, 03... の2桁ゼロ埋め
作業手順
Phase 1: セッション開始時(最初のタスク)
- TaskList → TaskGet で自分のタスクを確認
- TaskUpdate で in_progress にする
- セッションディレクトリを確認・作成:
.claude/logo-design/{date}_{project}/ - 全体コンテキストファイル
.claude/logo-design/{date}_{project}/context.mdを作成:
# {プロジェクト名} - Logo Design Context
## ブランド情報
- アプリ名: {名前}
- 概要: {説明}
- ターゲット: {ターゲット}
- カラー: {カラー設定}
- 用途: {用途}
- タグライン: {タグライン}
## 制約・好み
- 好みの方向性: {方向性}
- 避けたいスタイル: {避けるもの}
## 過去のラウンドで学んだこと
(初回は空欄、各ステップ終了後に追記)
## ステップ履歴
| Step | 目的 | 日時 | 結果 |
|------|------|------|------|
| step-01 | {目的} | {日時} | 進行中 |
- ステップコンテキストファイル
.claude/logo-design/{date}_{project}/step-01/context.mdを作成:
# Step-01 コンテキスト
## このステップの目的
{目的}
## 探求する方向性
{方向性のリスト}
## 制約
{制約}
## ファイル構成
step-01/
├── context.md ← このファイル
├── log.md ← 議事録
└── logos/ ← 生成したロゴ
- 議事録ファイル
.claude/logo-design/{date}_{project}/step-01/log.mdを作成:
# Step-01 議事録
## セッション情報
- 日時: {日時}
- 参加エージェント: brand-strategist, logo-designer, color-type-expert, trend-researcher, competitive-analyst, context-manager
## タイムライン
### {時刻} - セッション開始
- ヒアリング完了
- ブランド情報: {要約}
- 全員に SendMessage で通知:
[全員へ] コンテキストファイルを作成しました。 - 全体: .claude/logo-design/{date}_{project}/context.md - このステップ: .claude/logo-design/{date}_{project}/step-01/context.md - 議事録: .claude/logo-design/{date}_{project}/step-01/log.md 作業開始してください。重要な決定事項は私に SendMessage で連絡してください。議事録に記録します。
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.
- 1mo ago First seen · 156 lines · 76 tokens per session scan A b4777a977da9
context-manager is an agent published in the GitHub repository sean-sunagaku/claude-code-plugin (38 stars, last pushed 2mo ago), licensed MIT. It adds 76 tokens to every session and 1,575 once invoked, about $0.0003 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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