impact-reviewer

impact-reviewer is an agent for Claude Code from morodomi/dev-crew. It costs 44 tokens per session (547 once invoked), scanned A, original, MIT.

A code-review agent that examines how a change can affect the rest of a codebase. It checks dependencies, public APIs, single points of failure, and circular dependencies.

In plain words
What is it for?
Use it to identify affected modules, breaking interface changes, newly created single points of failure, and dependency cycles.
Why use it?
It helps reveal downstream breakage and architectural risks before a change is merged or released.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the dev-crew plugin — 28 skills, 41 agents, 3 hooks shipped together

Good fit Use it to identify affected modules, breaking interface changes, newly created single points of failure, and dependency cycles.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/morodomi/dev-crew/impact-reviewer
Install

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.

Clone the repo
git clone --depth 1 https://github.com/morodomi/dev-crew

Made for: Claude Code.

Or install dev-crew, the plugin that ships this one along with the rest of its 28 skills, 41 agents, 3 hooks.

Wrote 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.

agentmods badge for impact-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/morodomi/dev-crew/impact-reviewer/github.svg)](https://agentmods.dev/agents/morodomi/dev-crew/impact-reviewer)
Your own site
<a href="https://agentmods.dev/agents/morodomi/dev-crew/impact-reviewer"><img src="https://agentmods.dev/badge/agents/morodomi/dev-crew/impact-reviewer/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.

agentmods 80×15 button for impact-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/morodomi/dev-crew/impact-reviewer"><img src="https://agentmods.dev/badge/agents/morodomi/dev-crew/impact-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 547 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00044 $0.00547
Opus 5.5 $0.00018 $0.00219
Sonnet 5.5 $0.00009 $0.00109
Haiku 4.5 $0.00004 $0.00055

Measured 1mo ago against content hash 32599a36c2db, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

impact-reviewer 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.

agents/impact-reviewer.md · 42 lines

What it actually says

Focus

観点 チェック内容 参照元
依存分析 変更が影響する下流モジュールの列挙 C4 Model
公開 API 外部公開インターフェースの変更有無 C4 Model
SPOF 単一障害点の生成・悪化 SEI ATAM
循環依存 新たな循環依存の導入 SEI ATAM

Output

{"issues": [{"severity": "optional", "category": "dependency", "message": "...", "suggestion": "..."}]}

severity は critical|important|optional のいずれか。category は dependency|public-api|spof|circular-dep のいずれか。

change-safety-reviewer との分担(Dedup ルール)

指摘の性質 担当 例
下流モジュールへの連鎖影響 impact 依存モジュール列挙
公開APIの破壊的変更検出 impact エンドポイント削除
SPOF・循環依存の導入 impact 単一障害点の検出
デプロイ戦略・ロールバック手順 change-safety カナリアデプロイ未検討
blast radius(段階デプロイ) change-safety 影響範囲の限定

Severity 基準

  • critical = このまま進めば実害(バグ混入・セキュリティ・契約破壊)
  • important = 品質・保守性への実影響。対応推奨(defer 可)
  • optional = 改善提案

verdict への反映は triage(accept-apply/accept-defer に残った findings)通過後に skills/review/severity-verdict.sh が集計する(reject は除外)。0-100 の自己採点は廃止。

Changes

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.

  1. 1mo ago Changed · +5 lines 32599a36c2db
  2. 1mo ago First seen · 37 lines · 44 tokens per session scan A 90b3dc370dc5

Subscribe to this mod's changes

impact-reviewer is an agent published in the GitHub repository morodomi/dev-crew (1 stars, last pushed yesterday), licensed MIT. It adds 44 tokens to every session and 547 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 2026-08-31.

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