Borrowing it
Nothing to install: this file belongs to akaghef/M3E. 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/akaghef/M3E/main/.claude/skills/launch-beta/SKILL.mdgit clone --depth 1 https://github.com/akaghef/M3EWrote 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/akaghef/m3e/launch-beta)<a href="https://agentmods.dev/skills/akaghef/m3e/launch-beta"><img src="https://agentmods.dev/badge/skills/akaghef/m3e/launch-beta/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/akaghef/m3e/launch-beta"><img src="https://agentmods.dev/badge/skills/akaghef/m3e/launch-beta.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 | $0.00132 | $0.00754 |
| Opus 5.5 | $0.00053 | $0.00302 |
| Sonnet 5.5 | $0.00026 | $0.00151 |
| Haiku 4.5 | $0.00013 | $0.00075 |
Grade A, and why
launch-beta 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 5d 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
launch-beta — 指定ワークツリーの beta 起動
ロール指定でワークツリーを選び、scripts/beta/launch.bat をバックグラウンド実行する。
Usage
/launch-beta {role}
ロール → ブランチ → ワークツリー対応:
| role | branch | worktree path |
|---|---|---|
beta |
dev-beta |
c:\Users\Akaghef\dev\M3E-dev-beta\ |
data (既定) |
dev-data |
c:\Users\Akaghef\dev\M3E\ |
visual |
dev-visual |
c:\Users\Akaghef\dev\M3E-dev-visual\ |
役割名を省略した場合は、現在の CWD のワークツリーで起動する。
実行手順
-
git worktree listでロールに対応するワークツリーの存在を確認する。 存在しなければ、その旨をユーザーに報告して中断する （git worktree addはこのスキルでは行わない — 別途用意が必要）。 -
ロール名から launch.bat の絶対パスを決定する:
- beta →
c:/Users/Akaghef/dev/M3E-dev-beta/scripts/beta/launch.bat - data →
c:/Users/Akaghef/dev/M3E/scripts/beta/launch.bat - visual →
c:/Users/Akaghef/dev/M3E-dev-visual/scripts/beta/launch.bat
- beta →
-
Bash ツールで
run_in_background: trueで実行:<launch.bat 絶対パス> -
ユーザーには
http://localhost:4173/viewer.htmlおよびhttp://localhost:4173/home.htmlが 開けることを案内する（どちらのページが必要かはタスクによる）。
備考
- launch.bat は
%~dp0\..\..で自身のワークツリーを解決するので、どこから呼んでも正しいパスで起動する。 - port 4173 は launch.bat 内で自動解放される（既存プロセスがあれば kill）。
- ビルド物がない場合は失敗する。その場合は先に
npm --prefix beta run buildが必要。 - このスキルはサーバー起動「だけ」を行う。ビルド・テスト・ブラウザ起動は別スキルに任せる。
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.
- 5d ago First seen · 57 lines · 132 tokens per session scan A 6bd97af7c7e7
launch-beta is a skill published in the GitHub repository akaghef/M3E (11 stars, last pushed 5d ago), licensed MIT. It adds 132 tokens to every session and 754 once invoked, about $0.0005 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 2026-10-02.
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