code-review-and-quality

code-review-and-quality is a skill for Claude Code, Codex from LLl0k0laD/agent-skills. It costs 44 tokens per session (2,108 once invoked), scanned A, original, MIT.

A checklist for reviewing code before it is merged into the main project. It examines whether the change works, is understandable, fits the design, is secure, and performs well.

In plain words
What is it for?
Use it to review your own code or someone else's after features, refactors, and bug fixes, including checking edge cases, error handling, tests, security, and performance.
Why use it?
It catches defects and maintenance problems before a change becomes part of the shared codebase.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to review your own code or someone else's after features, refactors, and bug fixes, including checking edge cases, error handling, tests, security, and performance.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lll0k0lad/agent-skills/code-review-and-quality
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 LLl0k0laD/agent-skills --skill code-review-and-quality
Clone the repo
git clone --depth 1 https://github.com/LLl0k0laD/agent-skills

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-and-quality

README.md
[![agentmods](https://agentmods.dev/badge/skills/lll0k0lad/agent-skills/code-review-and-quality/github.svg)](https://agentmods.dev/skills/lll0k0lad/agent-skills/code-review-and-quality)
Your own site
<a href="https://agentmods.dev/skills/lll0k0lad/agent-skills/code-review-and-quality"><img src="https://agentmods.dev/badge/skills/lll0k0lad/agent-skills/code-review-and-quality/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 code-review-and-quality

Your own site · 80×15
<a href="https://agentmods.dev/skills/lll0k0lad/agent-skills/code-review-and-quality"><img src="https://agentmods.dev/badge/skills/lll0k0lad/agent-skills/code-review-and-quality.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,108 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 $0.00044 $0.02108
Opus 5 $0.00022 $0.01054
Sonnet 5 $0.00009 $0.00422
Haiku 4.5 $0.00004 $0.00211

Measured 12d ago against content hash 2ec6b3fdc513, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

code-review-and-quality 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 12d 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/code-review-and-quality/SKILL.md · 277 lines

How it starts

The opening of the file, as written. The whole thing — 277 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Review and Quality

Overview

Multi-dimensional code review with quality gates. Every change gets reviewed before merge — no exceptions. Review covers five axes: correctness, readability, architecture, security, and performance. The standard is: "Would a staff engineer approve this diff and the verification story?"

When to Use

  • Before merging any PR or change
  • After completing a feature implementation
  • When another agent or model produced code you need to evaluate
  • When refactoring existing code
  • After any bug fix (review both the fix and the regression test)

The Five-Axis Review

Every review evaluates code across these dimensions:

1. Correctness

Does the code do what it claims to do?

  • Does it match the spec or task requirements?
  • Are edge cases handled (null, empty, boundary values)?
  • Are error paths handled (not just the happy path)?
  • Does it pass all tests? Are the tests actually testing the right things?
  • Are there off-by-one errors, race conditions, or state inconsistencies?

2. Readability & Simplicity

Can another engineer (or agent) understand this code without the author explaining it?

  • Are names descriptive and consistent with project conventions? (No temp, data, result without context)
  • Is the control flow straightforward (avoid nested ternaries, deep callbacks)?
  • Is the code organized logically (related code grouped, clear module boundaries)?
  • Are there any "clever" tricks that should be simplified?
  • Could this be done in fewer lines? (1000 lines where 100 suffice is a failure)
  • Are abstractions earning their complexity? (Don't generalize until the third use case)
  • Would comments help clarify non-obvious intent? (But don't comment obvious code.)
  • Are there dead code artifacts: no-op variables (_unused), backwards-compat shims, or // removed comments?

3. Architecture

Does the change fit the system's design?

  • Does it follow existing patterns or introduce a new one? If new, is it justified?
  • Does it maintain clean module boundaries?
  • Is there code duplication that should be shared?
  • Are dependencies flowing in the right direction (no circular dependencies)?
  • Is the abstraction level appropriate (not over-engineered, not too coupled)?

Read the full file on GitHub · 277 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. 12d ago First seen · 277 lines · 44 tokens per session scan A 2ec6b3fdc513

Subscribe to this mod's changes

code-review-and-quality is a skill published in the GitHub repository LLl0k0laD/agent-skills (2 stars, last pushed yesterday), licensed MIT. It adds 44 tokens to every session and 2,108 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.