What is quality-reviewer?

A code-quality reviewer that checks source code for readability and maintainability problems. It focuses on issues such as unclear names, repeated logic, long functions, deep nesting, and missing error handling.

Use it for a focused code-quality review or as one reviewer in a multi-agent review process.

It helps find code that is difficult to understand or change before those problems spread. It does not review security, speed, or documentation.

quality-reviewer — Agent for Claude Code by PacktPublishing

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.

Clone the repo

git clone --depth 1 https://github.com/PacktPublishing/The-Claude-Code-Operating-Model

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/packtpublishing/the-claude-code-operating-model/quality-reviewer/github.svg)](https://agentmods.dev/agents/packtpublishing/the-claude-code-operating-model/quality-reviewer)

Your own site

<a href="https://agentmods.dev/agents/packtpublishing/the-claude-code-operating-model/quality-reviewer"><img src="https://agentmods.dev/badge/agents/packtpublishing/the-claude-code-operating-model/quality-reviewer/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/packtpublishing/the-claude-code-operating-model/quality-reviewer"><img src="https://agentmods.dev/badge/agents/packtpublishing/the-claude-code-operating-model/quality-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 66 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 311 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.

Model	Per session	Once invoked
Fable 5.1	$0.00066	$0.00311
Opus 5.5	$0.00026	$0.00124
Sonnet 5.5	$0.00013	$0.00062
Haiku 4.5	$0.00007	$0.00031

Measured 2mo ago against content hash 9e2984c58e89, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

quality-reviewer 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 2mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

quality-reviewer — 100% identical, 0 lines differ

ch04-subagents/multi-agent-review/.claude/agents/quality-reviewer.md · 42 lines

What it actually says

You are a code-quality-only reviewer. Stay in your lane — security and performance issues are out of scope.

Scope (only these)

Poor naming (x, tmp, data2, abbreviations without context)
DRY violations (same logic repeated 3+ times)
Long functions (>50 lines, >4 branch depth)
Magic numbers (literal constants without naming)
Missing error handling (try with no catch logic, swallowed errors)
Deep nesting (>3 levels of if/for/while)
Mixed concerns (HTTP + business logic + DB in one function)

Output Format

## Code Quality Review

| Severity | Line | Issue | Fix |
|----------|------|-------|-----|
| MAJOR    | 12   | Function `process()` is 87 lines, 5-level nesting | Extract `validateInput()`, `applyDiscount()`, `persist()` |

Findings: N major, N minor.

If no issues: No code quality issues found in scope.

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.

2mo ago First seen · 42 lines · 66 tokens per session scan A 9e2984c58e89

Subscribe to this mod's changes

quality-reviewer is an agent published in the GitHub repository PacktPublishing/The-Claude-Code-Operating-Model (21 stars, last pushed 3mo ago), licensed MIT. It adds 66 tokens to every session and 311 once invoked, about $0.0003 per session on Opus 5.5. 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.

Code review

quality-reviewer next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
quality-reviewerPacktPublishing/The-Claude-Code-Operating-Model	Agent	21	3mo ago	MIT	A	66	Claude Code
cpp-revieweraffaan-m/ECC	Agent	299k	yesterday	MIT	A	41	Claude Code, Kiro
thermo-nuclear-code-quality-review-subagentmichael-denyer/pstack-claude	Agent	4.1k	yesterday	MIT	A	68	Claude Code
review-obsidian-guidelinesuphy/obsidian-reminder	Agent	662	2d ago	MIT	A	63	Claude Code
karimo-implementeropensesh/KARIMO	Agent	290	25d ago	Apache-2.0	A	49	Claude Code
atomic-auditordamusix/atomic-claude	Agent	116	5d ago	MIT	A	169	Claude Code
reviewergenkovich/sdd	Agent	199	23d ago	MIT	A	81	Claude Code