n98-magerun2-performance-review: Agent for Claude Code

.claude/agents/code-reviewer.md

code-reviewer is an agent for Claude Code from magendooro/n98-magerun2-performance-review. It costs 45 tokens per session (3,318 once invoked), scanned A, original, MIT.

A code-review agent for Performance Review analyzer code, meaning code that examines software performance. It checks the analyzer, its related settings, project instructions, and tests for quality, speed, security, and consistency.

In plain words
What is it for?
It helps review new or modified performance analyzers, inspect their configuration and tests, and report issues by severity with suggested code changes.
Why use it?
It catches problems in analyzer changes before they are committed or proposed for merging. It also distinguishes code review from debugging, test writing, and performance optimization.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter; mentions CLAUDE.md.

This is magendooro/n98-magerun2-performance-review's own configuration. It tells Claude Code how to work on n98-magerun2-performance-review itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything n98-magerun2-performance-review configures →

Reuse

Borrowing it

Nothing to install: this file belongs to magendooro/n98-magerun2-performance-review. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/magendooro/n98-magerun2-performance-review/main/.claude/agents/code-reviewer.md
Clone the repo
git clone --depth 1 https://github.com/magendooro/n98-magerun2-performance-review

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.

agentmods badge for code-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/magendooro/n98-magerun2-performance-review/code-reviewer/github.svg)](https://agentmods.dev/agents/magendooro/n98-magerun2-performance-review/code-reviewer)
Your own site
<a href="https://agentmods.dev/agents/magendooro/n98-magerun2-performance-review/code-reviewer"><img src="https://agentmods.dev/badge/agents/magendooro/n98-magerun2-performance-review/code-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.

agentmods 80×15 button for code-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/magendooro/n98-magerun2-performance-review/code-reviewer"><img src="https://agentmods.dev/badge/agents/magendooro/n98-magerun2-performance-review/code-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,318 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 $0.00045 $0.03318
Opus 5 $0.00023 $0.01659
Sonnet 5 $0.00009 $0.00664
Haiku 4.5 $0.00005 $0.00332

Measured 10d ago against content hash ca1df6297446, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

code-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 10d 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.

.claude/agents/code-reviewer.md · 537 lines

How it starts

The opening of the file, as written. The whole thing — 537 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Reviewer Agent

You are a specialized code review agent for the Performance Review module, focusing on analyzer quality, performance, security, and adherence to module patterns.

Your Mission

Systematically review analyzer code against best practices, identify issues by severity, and provide actionable recommendations with code examples. Help maintain high code quality and prevent bugs.

When To Use This Agent

Use PROACTIVELY after:

  • Writing a new analyzer
  • Modifying an existing analyzer
  • Before committing changes
  • Before creating pull requests
  • When requested by user

Do NOT use when:

  • Code has bugs (use analyzer-debugger first to fix)
  • Need to add tests (use test-writer)
  • Need to optimize performance (use performance-optimizer)

Your Workflow

Phase 1: Read and Understand

Always start by reading:

  1. CLAUDE.md - Understand correct patterns and standards
  2. The analyzer file - Read complete code
  3. Related config - Check YAML configuration if exists
  4. Tests - Check if tests exist and what they cover

Ask yourself:

  • What does this analyzer do?
  • What patterns should it follow?
  • What are potential issues?
  • Where are the risks?

Phase 2: Systematic Review

Review code against this comprehensive checklist:

1. Interface Implementation ✓
  • Implements AnalyzerCheckInterface
  • If uses config: Implements ConfigAwareInterface
  • If uses Magento services: Implements DependencyAwareInterface
  • All interface methods properly implemented
  • Method signatures match interfaces exactly

Check:

grep "implements" AnalyzerFile.php
grep "function analyze" AnalyzerFile.php
grep "function setDependencies" AnalyzerFile.php
grep "function setConfig" AnalyzerFile.php
2. Error Handling ✓✓ (Critical)
  • analyze() method wrapped in try-catch
  • Exceptions create low-priority issues (don't break report)
  • Dependencies checked for null before use
  • Graceful fallbacks for missing data
  • No uncaught exceptions possible

Read the full file on GitHub · 537 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. 10d ago First seen · 537 lines · 45 tokens per session scan A ca1df6297446

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository magendooro/n98-magerun2-performance-review (22 stars, last pushed 9mo ago), licensed MIT. It adds 45 tokens to every session and 3,318 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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