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 thkt/dotclaude --skill use-context-reviewer-testabilitygit clone --depth 1 https://github.com/thkt/dotclaudeWrote 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/thkt/dotclaude/use-context-reviewer-testability)<a href="https://agentmods.dev/skills/thkt/dotclaude/use-context-reviewer-testability"><img src="https://agentmods.dev/badge/skills/thkt/dotclaude/use-context-reviewer-testability/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/thkt/dotclaude/use-context-reviewer-testability"><img src="https://agentmods.dev/badge/skills/thkt/dotclaude/use-context-reviewer-testability.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 | $0.00046 | $0.00430 |
| Opus 5.5 | $0.00018 | $0.00172 |
| Sonnet 5.5 | $0.00009 | $0.00086 |
| Haiku 4.5 | $0.00005 | $0.00043 |
Grade A, and why
use-context-reviewer-testability 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 1mo 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
use-context-reviewer-testability
検出
| ID | パターン | 修正 |
|---|---|---|
| TE1 | import { db } の直接使用 |
依存をパラメータとして注入 |
| TE1 | クラス内の new Service() |
コンストラクタ注入 |
| TE2 | コンポーネント内の fetch() |
hook/service に抽出して注入 |
| TE2 | 副作用とロジックの混在 | pure/impure を分離 |
| TE3 | 深い mock チェーン | 依存を簡潔にする |
| TE4 | グローバルな config アクセス |
config を prop/parameter で渡す |
| TE4 | ロジック内の Date.now() |
clock/time provider を注入 |
| TE5 | 密結合 | 抽象に依存する (DIP) |
基準
テストセットアップが 10 行未満に収まる。
参照ファイル
| トピック | ファイル |
|---|---|
| DI | ${CLAUDE_SKILL_DIR}/references/dependency-injection.md |
| Pure | ${CLAUDE_SKILL_DIR}/references/pure-functions.md |
| Mocking | ${CLAUDE_SKILL_DIR}/references/mock-friendly.md |
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.
- 1mo ago First seen · 37 lines · 46 tokens per session scan A fd5586328ae2
use-context-reviewer-testability is a skill published in the GitHub repository thkt/dotclaude (12 stars, last pushed 25d ago), licensed MIT. It adds 46 tokens to every session and 430 once invoked, about $0.0002 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 2026-08-30.
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