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/lc-semba-ryuichiro/semba-claude-plugins/webpifynpx skills add lc-semba-ryuichiro/semba-claude-plugins --skill webpifygit clone --depth 1 https://github.com/lc-semba-ryuichiro/semba-claude-pluginsWrote 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/lc-semba-ryuichiro/semba-claude-plugins/webpify)<a href="https://agentmods.dev/skills/lc-semba-ryuichiro/semba-claude-plugins/webpify"><img src="https://agentmods.dev/badge/skills/lc-semba-ryuichiro/semba-claude-plugins/webpify.svg" alt="Measured on agentmods" 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 | $0.00094 | $0.02382 |
| Opus 5 | $0.00047 | $0.01191 |
| Sonnet 5 | $0.00019 | $0.00476 |
| Haiku 4.5 | $0.00009 | $0.00238 |
Grade A, and why
webpify 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 6d 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 — 248 lines — stays where its author put it; the contents beside it link to each section on GitHub.
webpify 使用ガイド
目次
概要
webpifyはPNG/JPEG/GIF画像をWebP形式に変換するCLIツール。ファイルサイズを削減しながら画質を維持し、Webパフォーマンスを向上させる。
事前準備チェックリスト
変換する前に確認する。
- Node.js 22.0.0以上がインストールされているか
- 対象画像ファイルのバックアップは不要か
- 出力先ディレクトリの書き込み権限があるか
実行方法
webpifyはnpxで都度実行する。グローバルインストールは不要。
npx @semba-ryuichiro/webpify@latest [入力パス] [オプション]
CLI オプション一覧
| オプション | 説明 | デフォルト |
|---|---|---|
-o, --output <dir> |
出力ディレクトリを指定 | 元ファイルと同じ場所 |
-q, --quality <n> |
品質レベル (1-100) | 100 |
-r, --recursive |
サブディレクトリも再帰的に処理 | false |
-f, --force |
既存の WebP ファイルを上書き | false |
--lossless |
可逆圧縮モードで変換 | false |
--list |
WebP ファイルの情報を一覧表示 | - |
--absolute |
一覧表示時に絶対パスで表示 | false |
--quiet |
統計情報の出力を抑制 | false |
-v, --version |
バージョン表示 | - |
-h, --help |
ヘルプ表示 | - |
よくある使用パターン
単一ファイル変換
npx @semba-ryuichiro/webpify@latest image.png
What ships with it
1 file 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.
- 6d ago First seen · 248 lines · 94 tokens per session scan A 4a2f3d28b9b4
webpify is a skill published in the GitHub repository lc-semba-ryuichiro/semba-claude-plugins (1 stars, last pushed 5mo ago), licensed MIT. It adds 94 tokens to every session and 2,382 once invoked, about $0.0005 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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