review-diff

review-diff is a skill for Claude Code, Codex from CadeYu/vibe-harness. It costs 22 tokens per session (400 once invoked), scanned A, original, MIT.

A review checklist for examining the current code or documentation changes before calling work complete, merged, or ready for handoff.

In plain words
What is it for?
It compares the diff with project requirements, architecture, plans, and tests, then reports issues by severity with their impact and smallest fix.
Why use it?
It helps catch correctness bugs, missing tests, outdated documentation, unsafe operations, and unsupported completion claims.

Skill for Claude CodeCodex

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 skills/cadeyu/vibe-harness/review-diff
Any agent
npx skills add CadeYu/vibe-harness --skill review-diff
Clone the repo
git clone --depth 1 https://github.com/CadeYu/vibe-harness

Made for: Claude Code, Codex.

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 review-diff

README.md
[![agentmods](https://agentmods.dev/badge/skills/cadeyu/vibe-harness/review-diff.svg)](https://agentmods.dev/skills/cadeyu/vibe-harness/review-diff)
Your own site
<a href="https://agentmods.dev/skills/cadeyu/vibe-harness/review-diff"><img src="https://agentmods.dev/badge/skills/cadeyu/vibe-harness/review-diff.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 400 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 5.1 $0.00022 $0.00400
Opus 5 $0.00011 $0.00200
Sonnet 5 $0.00004 $0.00080
Haiku 4.5 $0.00002 $0.00040

Measured 5d ago against content hash 145752e3f723, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

review-diff 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.

skills/review-diff/SKILL.md · 66 lines

What it actually says

Diff 审查

以高级工程师标准审查当前 diff。

触发时机

以下情况使用这个 skill:

  • 代码或 docs 已发生改动。
  • 某条 slice 被认为已经完成。
  • 用户要求审查。
  • handoff 需要风险评估。

必读材料

  • 当前 diff。
  • docs/product.md
  • docs/architecture.md
  • docs/plans/active.md
  • 相关 tests。
  • 如果可用,阅读命令输出。

流程

  1. 识别本次改动的行为契约。
  2. 优先检查正确性问题。
  3. 对照验收标准检查 tests。
  4. 对照 docs/architecture.md 检查架构边界。
  5. 检查 docs 和 status 是否过期。
  6. 先输出问题项,按严重级别排序。
  7. 如果没有问题项,说明剩余风险和验证缺口。

问题项格式

每个问题项包含:

  • 严重级别。
  • 尽量包含文件路径和行号。
  • 问题。
  • 影响。
  • 最小修复方式。

Review 重点

  • 正确性 bug。
  • 缺失 tests。
  • 文档过期。
  • 边界违规。
  • 不安全操作。
  • 数据模型错误。
  • 错误处理缺口。
  • 过度设计。
  • 未使用代码。
  • 没有验证证据的完成声明。

边界

  • 除非明确要求,审查时不要重写代码。
  • 不要把问题项埋在长摘要后面。
  • 失败检查未解释清楚前,不要 approve work。
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. 5d ago First seen · 66 lines · 22 tokens per session scan A 145752e3f723

Subscribe to this mod's changes

review-diff is a skill published in the GitHub repository CadeYu/vibe-harness (5 stars, last pushed 2mo ago), licensed MIT. It adds 22 tokens to every session and 400 once invoked, about $0.0001 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.

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