code-quality

code-quality is a skill for Claude Code, Codex from gc-victor/supersimple. It costs 23 tokens per session (417 once invoked), scanned A, original, MIT.

A structured code-review guide that checks correctness, readability, design, security, and performance.

In plain words
What is it for?
Use it to review proposed code changes, assess their scope, identify risks, and decide which issues must be fixed before approval.
Why use it?
It helps find serious problems and prioritize fixes instead of treating every imperfection as equally important. It also checks whether a change makes the codebase easier or harder to maintain.

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/gc-victor/supersimple/code-quality
Any agent
npx skills add gc-victor/supersimple --skill code-quality
Clone the repo
git clone --depth 1 https://github.com/gc-victor/supersimple

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-quality

README.md
[![agentmods](https://agentmods.dev/badge/skills/gc-victor/supersimple/code-quality.svg)](https://agentmods.dev/skills/gc-victor/supersimple/code-quality)
Your own site
<a href="https://agentmods.dev/skills/gc-victor/supersimple/code-quality"><img src="https://agentmods.dev/badge/skills/gc-victor/supersimple/code-quality.svg" alt="Measured on agentmods" height="20"></a>
Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 417 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 $0.00023 $0.00417
Opus 5 $0.00012 $0.00209
Sonnet 5 $0.00005 $0.00083
Haiku 4.5 $0.00002 $0.00042

Measured 5d ago against content hash 592c0f6ef95d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-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 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.

skills/code-quality/SKILL.md · 81 lines

What it actually says

Code Quality Skill

Purpose

This skill MUST assess code across correctness, readability, architecture, security, and performance, and it SHOULD approve changes only when they clearly improve the codebase. Judge the real maintenance cost of the change, not theoretical perfection.

ReAct Framework

REASON — Is the change justified and well scoped?

  • Is the core problem clear?
  • Does the change solve one problem?
  • Is this the simplest solution that could work?
  • Is added complexity justified?
  • Was reuse considered?

ACT — Is the implementation high quality?

Review these five axes:

  1. Correctness
  2. Readability
  3. Architecture
  4. Security
  5. Performance

REFLECT — Is the system better after the change?

  • Did complexity stay flat or decrease?
  • Should any cleanup happen now instead of later?
  • Is knowledge preserved in understandable code?
  • Is the change easy to roll back or iterate on?

Severity Model

  • Critical: blocks approval
  • High: serious issue, must fix
  • Medium: should fix, but may not block
  • Low / Nit: optional improvement
  • FYI: context only

Only Critical and High issues block approval.

Change Size Guidance

  • ~100 lines: good
  • ~300 lines: acceptable if focused
  • ~1000 lines: too large; split it

Separate refactoring from feature work when possible.

Verification

Run the relevant checks before reporting:

  • lint,
  • type check,
  • tests,
  • dependency audit,
  • build.

Mark unavailable checks as N/A.

Red Flags

Treat AI-generated code as untrusted until verified; check edge cases, tests, and hidden assumptions carefully.

  • speculative abstractions,
  • opaque cleverness,
  • missing validation,
  • secrets in code,
  • N+1 or unbounded work,
  • oversized changes with weak justification.

Follow the ReAct framework above.

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 · 81 lines · 23 tokens per session scan A 592c0f6ef95d

Subscribe to this mod's changes

code-quality is a skill published in the GitHub repository gc-victor/supersimple (33 stars, last pushed 4mo ago), licensed MIT. It adds 23 tokens to every session and 417 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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