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 skills/masayan1126/masayan-uni-code-plugins/thumbnailnpx skills add masayan1126/masayan-uni-code-plugins --skill thumbnailgit clone --depth 1 https://github.com/masayan1126/masayan-uni-code-pluginsWhat 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 | $0.00046 | $0.00508 |
| Opus 5 | $0.00023 | $0.00254 |
| Sonnet 5 | $0.00009 | $0.00102 |
| Haiku 4.5 | $0.00005 | $0.00051 |
Grade A, and why
creating-thumbnails 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
サムネイル画像作成
ワークフロー
- アイデア確認:
progress/ideas.mdをチェックし、該当するアイデアがあれば提案 - プラットフォーム確認:
- ブログ: 1200x630 (OGP)
- YouTube: 1280x720 (16:9)
- コンテンツ確認: タイトル（20文字以内推奨）、テーマ
- スタイル選択:
- テキスト中心型
- 人物・キャラ型
- コンセプト型
- 比較型
- キャラクター確認（人物・キャラ型の場合）:
- 既存キャラクター使用 → プロンプトに「画像生成AI使用時にベース画像添付」の注記を含める
- 新規キャラクター → キャラクター詳細をプロンプトに記載
- AIっぽさ緩和オプション確認: ANTI_AI_STYLE.md 参照
- 「ベタ塗り」「デフォルメされたフォルム」を含めるか確認
- プロンプト生成: PROMPT_TEMPLATE.md 使用
- 成果物保存:
- プロンプト:
output/thumbnail/{タイトル}.md（ディレクトリがなければ作成） - 生成画像:
output/thumbnail/images/{タイトル}.png
- プロンプト:
- 進捗更新:
progress/ideas.mdを更新（完了したアイデアにチェック）
参照ファイル
- FORMATS.md: フォーマット定義
- PROMPT_TEMPLATE.md: テンプレート
- EXAMPLES.md: サンプル
必須ルール
- 日本語テキスト
- 高コントラスト配色
- クリック率を意識したデザイン
What ships with it
3 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.
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 · 42 lines · 46 tokens per session scan A 0e0f687b373a
creating-thumbnails is a skill published in the GitHub repository masayan1126/masayan-uni-code-plugins (5 stars, last pushed 5mo ago), licensed MIT. It adds 46 tokens to every session and 508 once invoked, about $0.0002 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 2026-08-31.
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