reviewing-code

reviewing-code is a skill for Claude Code, Codex from alexei-led/cc-thingz. It costs 95 tokens per session (1,588 once invoked), scanned A, original, MIT.

A code-review guide for examining changed files, pull requests, or diffs. It reports possible defects instead of editing the code.

In plain words
What is it for?
Use it to review a small change quickly or carry out a standard or deeper review before merging code.
Why use it?
It helps find security, correctness, testing, reliability, performance, maintainability, and documentation problems within the requested changes.

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/alexei-led/cc-thingz/reviewing-code
Any agent
npx skills add alexei-led/cc-thingz --skill reviewing-code
Clone the repo
git clone --depth 1 https://github.com/alexei-led/cc-thingz

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 reviewing-code

README.md
[![agentmods](https://agentmods.dev/badge/skills/alexei-led/cc-thingz/reviewing-code.svg)](https://agentmods.dev/skills/alexei-led/cc-thingz/reviewing-code)
Your own site
<a href="https://agentmods.dev/skills/alexei-led/cc-thingz/reviewing-code"><img src="https://agentmods.dev/badge/skills/alexei-led/cc-thingz/reviewing-code.svg" alt="Measured on agentmods" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,588 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 $0.00095 $0.01588
Opus 5 $0.00048 $0.00794
Sonnet 5 $0.00019 $0.00318
Haiku 4.5 $0.00010 $0.00159

Measured 5d ago against content hash afd168998e9a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

reviewing-code 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.

src/skills/reviewing-code/SKILL.md · 177 lines

How it starts

The opening of the file, as written. The whole thing — 177 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Review

Produce findings, not edits. Review only the requested diff, PR, changed files, or file list. If scope or diff context is missing, ask one clarifying question.

Read first

Read references/severity-rubric.md before scoring or reporting findings. Load language references only for languages present in scope:

  • C#: references/csharp.md
  • Go: references/go.md
  • Java/Kotlin: references/java-kotlin.md
  • Python: references/python.md
  • Rust: references/rust.md
  • TypeScript: references/typescript.md
  • Web, HTML, CSS, JS, HTMX: references/web.md

Unsupported language: use this skill and the severity rubric only; report reduced coverage.

Review modes

Default mode is standard unless the user asks otherwise.

Quick:

  • Use for small, low-risk diffs.
  • Cover security and correctness only.
  • Review changed lines plus direct local context.

Standard:

  • Use for normal reviews.
  • Cover security, correctness, and tests.
  • Review changed files plus direct callers or callees when needed to validate a finding.

Deep:

  • Use when the user asks for deep, thorough, risk, or merge-safety review.
  • Cover all dimensions: security, correctness, tests, reliability, performance, maintainability, and docs.
  • Review changed files, relevant callers/callees, boundary inputs, and affected tests.

Team:

  • Use only when the user asks for team, parallel, multi-agent, or multi-pass review.
  • Split by dimension or file group, then consolidate into one report.
  • Deduplicate by file:line plus claim. Keep the strongest severity only when evidence supports it.
  • Put unresolved disagreements under Needs review, not confirmed findings.

External:

  • Use only when the user explicitly asks for external, Codex, second model, or second opinion.
  • Keep private code local unless the configured bridge runs locally or the user approved sharing.
  • Consolidate external output with the same severity rubric. Downgrade unsupported external claims to Needs review.
  • Report whether external review completed, was unavailable, or was skipped for privacy/tooling reasons.

Read the full file on GitHub · 177 lines

Files

What ships with it

9 files 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 · 177 lines · 95 tokens per session scan A afd168998e9a

Subscribe to this mod's changes

reviewing-code is a skill published in the GitHub repository alexei-led/cc-thingz (35 stars, last pushed 1mo ago), licensed MIT. It adds 95 tokens to every session and 1,588 once invoked, about $0.0005 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.

Related

Other skills, from other repositories

peekaboo

Provides runtime observation and interaction for native macOS interfaces through accessibility state and screenshots. Use when the task depends on visible or interactive state in a running SwiftUI/AppKit app: what is rendered, focused, selected, enabled, reachable through menus/windows/dialogs, or experienced across a…

johnkozaris/jko-claude-plugins · 104 tokens

electron-playwright-validator

This skill should be used when a user asks to launch, inspect, automate, test, validate, or debug an Electron desktop UI through Playwright/CDP, including blank renderers, runtime import failures, accessibility snapshots, layout defects, click-through flows, or post-change checks. Not for native macOS or mobile apps…

johnkozaris/jko-claude-plugins · 90 tokens

mobile-flows-maestro

This skill should be used when Maestro is explicitly requested or already present and the task is to author, run, or debug iOS/Android Maestro flows; use Maestro MCP; or handle Maestro selectors, system UI, permissions, Keychain, JavaScript, waits, device state, flakiness, or CI. Evidence includes a .maestro directory…

johnkozaris/jko-claude-plugins · 102 tokens

seam-probe

This skill should be used when testing or debugging an embedded-runtime boundary exposed through a dynamically loaded C-ABI library or Unix-domain socket, including requests to inspect exports, exercise FFI callbacks, send framed messages, reproduce seam crashes or hangs, fuzz a boundary, or correlate probe output…

johnkozaris/jko-claude-plugins · 82 tokens

validate-mobile

Run a Maestro flow on an explicitly selected iOS or Android device and report behavioral evidence.

johnkozaris/jko-claude-plugins · 20 tokens

validate-api

Run the project's Hurl scenarios with an OIDC access token passed as a secret variable.

johnkozaris/jko-claude-plugins · 20 tokens