impact-reviewer

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

Part of the dev-crew plugin — 14 skills, 41 agents, 3 hooks shipped together

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.

agentmods
npx agentmods add agents/morodomi/dev-crew/impact-reviewer
Clone the repo
git clone --depth 1 https://github.com/morodomi/dev-crew

Or install dev-crew, the plugin that ships this one along with the rest of its 14 skills, 41 agents, 3 hooks.

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 471 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00044 $0.00471
Opus 5 $0.00022 $0.00235
Sonnet 5 $0.00009 $0.00094
Haiku 4.5 $0.00004 $0.00047

Measured 2d ago against content hash 90b3dc370dc5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

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 · 37 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

{"blocking_score": 0-100, "issues": [{"severity": "critical|important|optional", "category": "dependency|public-api|spof|circular-dep", "message", "suggestion"}]}

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

指摘の性質 担当
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

ブロッキングスコア基準

blocking_score: パイプラインをブロックすべき度合い(0 = 問題なし, 100 = ブロック必須) 80-100→BLOCK | 50-79→WARN | 0-49→PASS

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. 2d 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 4d ago), licensed MIT. It adds 44 tokens to every session and 471 once invoked, about $0.0002 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.