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 skills add eaglesakura/agent-skills --skill tool-read-document-skill-creatorgit clone --depth 1 https://github.com/eaglesakura/agent-skillsWrote 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/skills/eaglesakura/agent-skills/tool-read-document-skill-creator)<a href="https://agentmods.dev/skills/eaglesakura/agent-skills/tool-read-document-skill-creator"><img src="https://agentmods.dev/badge/skills/eaglesakura/agent-skills/tool-read-document-skill-creator/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/skills/eaglesakura/agent-skills/tool-read-document-skill-creator"><img src="https://agentmods.dev/badge/skills/eaglesakura/agent-skills/tool-read-document-skill-creator.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 | $0.00208 | $0.03307 |
| Opus 5 | $0.00104 | $0.01654 |
| Sonnet 5 | $0.00042 | $0.00661 |
| Haiku 4.5 | $0.00021 | $0.00331 |
Grade A, and why
tool-read-document-skill-creator 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 8d 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 — 187 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tool / Read-Document Skill Creator
ドキュメント索引 SKILL は、長い docs / references を Agent が いきなり全文ロードしない ための入口である。
「どの文書を、いつ、どの深さまで読むか」を SKILL に固定し、実行時の把握は常に markdown-search に委譲する。
本 SKILL は そうした索引 SKILL の定義ファイルを書く。markdown-search 本体の手順は書かない。
いつ使うか / 使わないか
- 使う: 複数 Markdown（
docs/・references/・設計資料など）を束ねて読む専用 SKILL の作成・改訂 - 使う: 既存の「リンク列挙だけ」の知識 SKILL を、Stage 1 必須の契約へ更新するとき
- 使わない: 汎用の任意 Markdown 探索そのもの（→
markdown-search） - 使わない: slash-command / Sub Agent 定義（→
tool-command-creator/tool-sub-agent-creator） - 使わない: ドキュメントの新規執筆・lint（→
markdown-documentation/markdown-fix）
出力先と命名
- プロジェクト共有:
.cursor/skills/{skill-name}/SKILL.mdまたは.agents/skills/{skill-name}/SKILL.md - APM パッケージのソース:
.apm/skills/{skill-name}/SKILL.md - ディレクトリ名と frontmatter
nameを一致させる - SKILL 名が未確定なら文脈から提案し、ユーザー確認後に確定する。ユーザーが既に指定しているならそれに従う
命名の目安
| パターン | 例 | 向いているとき |
|---|---|---|
{領域}-knowledge-{主題} |
repo-knowledge-architecture |
リポジトリ固有の知識索引 |
{領域}-spec-{主題} |
hq-spec-generative-ai-law |
仕様・制約の正本索引 |
{領域}-{主題}-docs |
backend-auth-docs |
docs 束の入口であることが主眼 |
ハイフン区切り・小文字。抽象名（docs-helper 等）は避け、どの文書群かが名前から分かるようにする。
必須: テンプレート準拠
出力は必ず assets/read-document-skill.md に従う。
プレースホルダ（{...}）と HTML コメントは最終成果物から除去する。
段階ロードの意味・スクリプトは references/loading-contract.md を確認してから本文へ落とす。
生成 SKILL の契約（必須）
作成・改訂する索引 SKILL 自体が、実行時に次を守るように書く。
トリガー（いつロードするか）
- 「いつ読むか」は frontmatter の
descriptionに集約する（本文に同じトリガーを重複させない） - 参照ドキュメントの主題・キーワード・判断場面を
descriptionに書く（押し気味でよい） - ユーザー／親プロンプトで対象文書・節・観点が制約されている場合は、その文脈を優先する（索引を機械的に全消化しない）
- 対象ドキュメントの内容要約は SKILL 本文に書かない（正本との齟齬を防ぐ。内容は正本を Stage で読む）
ロード深さ（Context 最適化）
- 把握手順・Stage・出力の取り方は 生成 SKILL 本文に再掲しない。
markdown-searchへの誘導のみにする（Context 節約） - 作成者向けの契約（適用時は Stage 1 から、全文先読み禁止など）は references/loading-contract.md を正とし、生成物では「
markdown-searchに従う」と書く - 「念のため全文」「全部まとめて Read」を生成 SKILL の既定手順にしない
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.
- 8d ago First seen · 187 lines · 208 tokens per session scan A 08ceb03296f3
tool-read-document-skill-creator is a skill published in the GitHub repository eaglesakura/agent-skills (2 stars, last pushed 2d ago), licensed MIT. It adds 208 tokens to every session and 3,307 once invoked, about $0.0010 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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