code-review

A guide for reviewing code changes for correctness, design, security, testing, and readability before they are merged.

In plain words
What is it for?
Use it for pull-request reviews, self-reviews, merge decisions, edge-case checks, security checks, and test reviews.
Why use it?
It helps find important bugs and risks while keeping minor style comments from hiding higher-priority problems.

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

Made for: Claude Code, Codex.

Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 877 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 $0.00047 $0.00877
Opus 5 $0.00023 $0.00439
Sonnet 5 $0.00009 $0.00175
Haiku 4.5 $0.00005 $0.00088

Measured 2d ago against content hash 5f07bc91f87c, 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 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.

ronyup/internal/skeleton/skills/code-review/SKILL.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Review

Review for correctness and design first, style last (a formatter owns style). Prioritize feedback so the important things aren't lost in nits.

When to use

  • Reviewing a teammate's PR or diff.
  • Self-reviewing your own change before requesting review.
  • Deciding whether a change is safe to merge.

What to check, in priority order

  1. Correctness — does it do what it claims? Edge cases, error paths, off-by-one, nil/empty, concurrency, boundary conditions.
  2. Security & safety — input validation, authz checks, injection, secrets in code/logs, unsafe defaults.
  3. Design fit — right layer/abstraction; follows existing architecture and package-selection rules; no leaking concerns across boundaries. For RonyKit features, read clean-architecture — handlers thin, logic in internal/app, persistence behind internal/repo/port.go.
  4. Tests — meaningful tests for new behavior and fixed bugs; deterministic; assert behavior not internals.
  5. Readability — clear names, small functions, comments only where intent is non-obvious.
  6. Style — defer to the formatter/linter; don't hand-review spacing.

Watch for over-engineering

Complexity is a cost, not a credential. Flag code built to impress (or "just in case") rather than to meet a real requirement — it compounds maintenance with no user value. Quick lenses:

  • Deletion test — if this were removed, who'd notice and when? "Only the author" means it's not pulling its weight.
  • Abstraction needs ≥3 uses — one implementation behind an interface is indirection, not abstraction. Don't add a layer for a hypothetical second case.
  • Scale is actual, not imagined — generality/caching/sharding for traffic you don't have is speculation; prefer the simplest thing that fits today.
  • Dependencies earn their keep — a new library must save more than its footprint and upgrade burden; prefer a workspace helper (x/*, rony/*).
  • Premature optimization — no micro-optimizations without a measurement; readable beats clever on cold paths.

Read the full file on GitHub · 86 lines

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 · 86 lines · 47 tokens per session scan A 5f07bc91f87c

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository clubpay/ronykit (38 stars, last pushed 4d ago), licensed BSD-3-Clause. It adds 47 tokens to every session and 877 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 2026-08-30.

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