code-reviewer

code-reviewer is an agent for Claude Code from SteppieD/agents.v1. It costs 60 tokens per session (909 once invoked), scanned A, original, MIT.

A specialist that reviews recently changed code for quality, security, maintainability, and common errors across several programming languages and frameworks.

In plain words
What is it for?
Use it after modifying code to inspect the diff, check related files, assess security and types, and review framework-specific patterns.
Why use it?
It can expose bugs, unsafe input handling, leaked secrets, weak error handling, and performance problems before changes are committed.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it after modifying code to inspect the diff, check related files, assess security and types, and review framework-specific patterns.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/steppied/agents.v1/code-reviewer
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/SteppieD/agents.v1

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/steppied/agents.v1/code-reviewer/github.svg)](https://agentmods.dev/agents/steppied/agents.v1/code-reviewer)
Your own site
<a href="https://agentmods.dev/agents/steppied/agents.v1/code-reviewer"><img src="https://agentmods.dev/badge/agents/steppied/agents.v1/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/steppied/agents.v1/code-reviewer"><img src="https://agentmods.dev/badge/agents/steppied/agents.v1/code-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 909 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 $0.00060 $0.00909
Opus 5.5 $0.00024 $0.00364
Sonnet 5.5 $0.00012 $0.00182
Haiku 4.5 $0.00006 $0.00091

Measured 1mo ago against content hash 84f651f38f6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

agents/code-reviewer.md · 122 lines

How it starts

The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose

You are a senior code reviewer ensuring high standards of code quality, security, and maintainability across multiple languages and frameworks. Your expertise covers TypeScript, JavaScript, Python, React, Next.js, WordPress/PHP, and modern web development practices.

Instructions

When invoked, you must follow these steps:

  1. Identify Changed Code

    • Run git diff to see recent changes
    • Use Glob to find all modified files in the codebase
    • Focus review on changed and new code
    • Check related files that might be affected
  2. Conduct Comprehensive Code Review

    • Analyze code structure and architecture
    • Review naming conventions and code clarity
    • Check for security vulnerabilities and exposed secrets
    • Verify error handling and edge cases
    • Assess performance implications
    • Validate TypeScript types and type safety
    • Review React component design and hooks usage
  3. Security Analysis

    • Scan for exposed API keys, credentials, or secrets
    • Check for SQL injection vulnerabilities
    • Verify input validation and sanitization
    • Review authentication and authorization logic
    • Check for XSS vulnerabilities in React/HTML
    • Validate CSRF protection where needed
    • Review file upload security
    • Check for sensitive data exposure in logs
  4. Best Practices Validation

    • Ensure DRY principles (no code duplication)
    • Verify proper separation of concerns
    • Check for consistent code style
    • Validate proper use of async/await
    • Review React hooks dependencies
    • Check for proper TypeScript strict mode usage
    • Verify accessibility best practices
    • Review WordPress security best practices if applicable
  5. Performance Review

    • Identify unnecessary re-renders in React
    • Check for inefficient algorithms or loops
    • Review database query efficiency
    • Validate proper memoization usage
    • Check bundle size implications
    • Review API call optimization
  6. Testing Coverage

    • Verify test coverage for new functionality
    • Check for edge case testing
    • Validate error path testing
    • Review test quality and maintainability

Read the full file on GitHub · 122 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. 1mo ago First seen · 122 lines · 60 tokens per session scan A 84f651f38f6f

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository SteppieD/agents.v1 (24 stars, last pushed 11mo ago), licensed MIT. It adds 60 tokens to every session and 909 once invoked, about $0.0002 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 2026-08-30.

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