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/classmethod/tsumiki/dev-webtest-plannpx skills add classmethod/tsumiki --skill dev-webtest-plangit clone --depth 1 https://github.com/classmethod/tsumikiWhat 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 | $0.00153 | $0.08089 |
| Opus 5 | $0.00077 | $0.04045 |
| Sonnet 5 | $0.00031 | $0.01618 |
| Haiku 4.5 | $0.00015 | $0.00809 |
Grade C, and why
dev-webtest-plan scanned grade C with 2 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf tmp/webtest/plan/<plan-name>/ Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
API セットアップ/クリーンアップの設計も含む。Phase 2 の分析結果からAPIエンドポイント情報を活用し、各 webtest plan に実行可能な curl コマンドを設計する。 How it starts
The opening of the file, as written. The whole thing — 549 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Dev Webtest Plan
dev-plan の出力(acceptance-criteria.md の Given/When/Then、タスクファイルの Test Strategy 等)から、dev-webtest が実行する Playwright 用 Web テスト計画ファイルを自動生成するスキル。画面仕様ドキュメント(Screen Spec)の変更差分から既存テスト計画を更新する差分更新モードも備える。
前提知識
dev-* スキルフロー内の位置
dev-context → dev-plan → [dev-webtest-plan] → dev-impl → dev-verify → dev-webtest
↓ ↑
docs/dev/webtests/plans/*.md ─────────────────────────┘
dev-screen-spec → [dev-webtest-plan update] → dev-webtest
↓ (差分更新) ↑
docs/dev/webtests/plans/*.md ───────┘
引数フォーマット
/dev-webtest-plan <dev-plan-name> # 新規生成モード
/dev-webtest-plan update # 差分更新モード(全webtest計画対象)
/dev-webtest-plan update <plan-name> # 差分更新モード(特定webtest計画のみ)
dev-plan-name: 既存の Plan 名(docs/dev/plans/<dev-plan-name>/が存在すること)update: 差分更新モードのキーワードplan-name: 更新対象のwebtest計画名(省略時は全計画を対象)
モード自動判定
引数で自動判定する(ユーザー質問不要):
引数が "update" で始まる → 差分更新モード
それ以外 → 新規生成モード(現行通り)
新規生成モードのサブ判定
acceptance-criteria.md の存在で自動判定する:
| モード | 判定条件 | 特徴 |
|---|---|---|
| Full-spec | docs/dev/plans/<name>/acceptance-criteria.md が存在 |
AC の Given/When/Then から直接変換(🔵 多い) |
| Lightweight | acceptance-criteria.md が存在しない | タスクの Test Strategy から推論(🟡 主体、🔵 なし) |
差分更新モード
| モード | 判定条件 | 特徴 |
|---|---|---|
| 差分更新 | 引数が update で始まる |
画面仕様の変更差分からテスト計画を更新(🟡 source: screen-spec update) |
サブエージェント制約(重要)
サブエージェントは Task ツールを使用できない(ネスト不可のアーキテクチャ制約)。そのため:
- コード探索は Glob/Grep/Read を直接使用する
- TodoWrite は使用しない(TaskCreate/TaskUpdate で進捗管理する)
- サブエージェントに渡すのはファイルパスのみ。サブエージェントが自分で Read する
コンテキスト管理戦略
メインコンテキストの肥大化を防ぐため、中間ファイルとパス参照 を使用する:
- メインエージェントはファイルの全文を Read しない(パス存在確認・Grep での部分情報取得のみ)
- サブエージェントに渡すのはファイルパス。サブエージェントが自分で Read する
- Phase 間のデータ受け渡しは中間ファイル経由(
tmp/webtest/plan/<plan-name>/) - サブエージェントの返却はマーカー+ファイルパス+行数のみ
中間ファイル(新規生成モード)
tmp/webtest/plan/<plan-name>/
├── task-summary.md # Phase 2a で生成(タスクサマリー)
├── explore-plan-result.md # Phase 2a の出力(Plan 分析結果)
├── explore-code-result.md # Phase 2b の出力(UI 要素情報)
└── design-result.md # Phase 3 の出力(構造設計結果)
What ships with it
9 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.
- references/ac-to-scenario-mapping.md 8.4 KB
- references/design-prompt-template.md 8.0 KB
- references/explore-code-prompt-template.md 7.1 KB
- references/explore-plan-prompt-template.md 7.0 KB
- references/generate-prompt-template.md 8.2 KB
- references/lightweight-inference-guide.md 9.2 KB
- references/update-analyze-prompt-template.md 7.2 KB
- references/update-apply-prompt-template.md 7.4 KB
- references/webtest-plan-format.md 11 KB
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 · 549 lines · 153 tokens per session scan C ae91e84c1148
dev-webtest-plan is a skill published in the GitHub repository classmethod/tsumiki (974 stars, last pushed 25d ago), licensed MIT. It adds 153 tokens to every session and 8,089 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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