Code Review

Code Review is a skill for Claude Code, Codex from notforyou23/home23. It costs 26 tokens per session (377 once invoked), scanned A, original, MIT.

A review tool for patches, diffs, pull requests, and other sets of code changes.

In plain words
What is it for?
Use it to review an implementation before merging, focusing on behavioral risks and test gaps.
Why use it?
It looks for bugs, regressions, risky assumptions, and missing tests in the code that changed.

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/notforyou23/home23/code-review
Any agent
npx skills add notforyou23/home23 --skill code-review
Clone the repo
git clone --depth 1 https://github.com/notforyou23/home23

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 Code Review

README.md
[![agentmods](https://agentmods.dev/badge/skills/notforyou23/home23/code-review.svg)](https://agentmods.dev/skills/notforyou23/home23/code-review)
Your own site
<a href="https://agentmods.dev/skills/notforyou23/home23/code-review"><img src="https://agentmods.dev/badge/skills/notforyou23/home23/code-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 377 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 $0.00026 $0.00377
Opus 5 $0.00013 $0.00188
Sonnet 5 $0.00005 $0.00075
Haiku 4.5 $0.00003 $0.00038

Measured 5d ago against content hash 3c2e2d474b4d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Code 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 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.

workspace/skills/code-review/SKILL.md · 67 lines

What it actually says

Code Review

Use this skill when the task is to review a change set rather than implement new code.

When to use

Use code-review for:

  • pull requests
  • diffs and patches
  • “find bugs” asks
  • regression and test-gap inspection

Workflow

  1. Read the changed surface first.
  2. Look for behavioral regressions before style issues.
  3. Check invariants, data flow, edge cases, and failure handling.
  4. Note missing tests only when they would likely catch a real bug.
  5. Output findings first, ordered by severity.

Output

  • File or surface reference
  • Concrete risk
  • Why it matters
  • Minimal fix or follow-up

Gotchas

  • Do not praise obvious code. Findings come first.
  • Do not turn review into a rewrite proposal unless the change is fundamentally wrong.
  • If no findings exist, say that plainly and note residual risk or test gaps.

Examples

Review this PR for regressions and missing tests.
Focus on the changed files only.
Call out the highest-severity bugs first with file references.
Files

What ships with it

1 file 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.

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 · 67 lines · 26 tokens per session scan A 3c2e2d474b4d

Subscribe to this mod's changes

Code Review is a skill published in the GitHub repository notforyou23/home23 (11 stars, last pushed yesterday), licensed MIT. It adds 26 tokens to every session and 377 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 2026-08-30.

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