review

review is a skill for Claude Code from vasuag09/harness-claude. It costs 45 tokens per session (462 once invoked), scanned A, original, MIT.

A code review step for checking changed code before it is merged into a shared codebase.

In plain words
What is it for?
Use it immediately after modifying code to review a selected diff, report findings by file and line with severity, and require critical or high-severity fixes before merging.
Why use it?
It provides a fresh check for bugs, edge cases, poor error handling, confusing names, unnecessary complexity, duplication, and missing tests.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the harness-claude plugin — 32 skills, 8 agents, 6 hooks, 3 MCP servers shipped together

Good fit Use it immediately after modifying code to review a selected diff, report findings by file and line with severity, and require critical or high-severity fixes before merging.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/vasuag09/harness-claude/review
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.

Any agent
npx skills add vasuag09/harness-claude --skill review
Clone the repo
git clone --depth 1 https://github.com/vasuag09/harness-claude

Made for: Claude Code.

Or install harness-claude, the plugin that ships this one along with the rest of its 32 skills, 8 agents, 6 hooks, 3 MCP servers.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/vasuag09/harness-claude/review/github.svg)](https://agentmods.dev/skills/vasuag09/harness-claude/review)
Your own site
<a href="https://agentmods.dev/skills/vasuag09/harness-claude/review"><img src="https://agentmods.dev/badge/skills/vasuag09/harness-claude/review/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 review

Your own site · 80×15
<a href="https://agentmods.dev/skills/vasuag09/harness-claude/review"><img src="https://agentmods.dev/badge/skills/vasuag09/harness-claude/review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 462 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 $0.00045 $0.00462
Opus 5 $0.00023 $0.00231
Sonnet 5 $0.00009 $0.00092
Haiku 4.5 $0.00005 $0.00046

Measured 10d ago against content hash fd9230c76145, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

review 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 10d 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/SKILL.md · 39 lines

What it actually says

/review — code quality & correctness

Goal: catch bugs and quality issues before they merge.

Do this

  1. Delegate to harness-claude:code-reviewer with the diff in scope (git diff, git diff --staged, or the files named).
  2. The reviewer checks correctness, edge cases, error handling, naming, complexity, duplication, adherence to harness rules, and test coverage — reporting file:line with severity.
  3. Triage findings:
    • Critical → block, fix now.
    • High → fix before merge.
    • Medium/Low → fix when reasonable / note.
  4. Apply fixes, then re-review the changed lines if Critical/High were found.

Common rationalizations (don't accept these from yourself)

Excuse Reality
"The diff is tiny — review would be ceremony" Small diffs cause outsized breakage precisely because nobody looks. The reviewer is cheap; the regression isn't.
"I just wrote it, so I know it's correct" The author is the worst-placed reviewer. That's the whole reason this gate delegates to a fresh-context agent.
"It's only a High, and the user is waiting" High means fix before merge. Speed pressure is when gates earn their keep.
"I'll batch the findings with the next change" Deferred findings become permanent. Fix now while the context is loaded.

Red flags — stop and re-check

  • You summarized the diff to the reviewer instead of giving it the actual diff.
  • The review returned zero findings on a non-trivial change (suspicious, not reassuring).
  • Critical/High fixes landed but the changed lines were never re-reviewed.

Exit criterion

No Critical or High findings outstanding. Then /harness-claude:security-review (or run both in parallel if the change is security-sensitive).

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. 10d ago First seen · 39 lines · 45 tokens per session scan A fd9230c76145

Subscribe to this mod's changes

review is a skill published in the GitHub repository vasuag09/harness-claude (2 stars, last pushed 2mo ago), licensed MIT. It adds 45 tokens to every session and 462 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.