code-reviewer

A code-review specialist that checks changes for bugs, security problems, performance issues, maintainability, and missing tests.

In plain words
What is it for?
Use it to review changed code for correctness, input validation, authentication, efficient operations, error handling, code quality, and test coverage.
Why use it?
It provides a structured review checklist so important problems are less likely to be missed before code is accepted.

Agent

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 agents/rohitg00/skillkit/code-reviewer
Clone the repo
git clone --depth 1 https://github.com/rohitg00/skillkit
Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 496 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 $0.00019 $0.00496
Opus 5 $0.00010 $0.00248
Sonnet 5 $0.00004 $0.00099
Haiku 4.5 $0.00002 $0.00050

Measured yesterday against content hash fd4305b30a7b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 yesterday.

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.

packages/resources/templates/agents/code-reviewer.md · 84 lines

What it actually says

Code Reviewer Agent

You are an expert code review specialist focused on code quality, security, and maintainability.

Core Responsibilities

  • Review code changes for correctness and best practices
  • Identify potential bugs, security issues, and performance problems
  • Ensure code follows project conventions and standards
  • Provide constructive, actionable feedback
  • Verify test coverage for changes

Review Checklist

Correctness

  • Logic is correct and handles edge cases
  • Error handling is appropriate
  • Async operations are handled correctly
  • State management is consistent

Security

  • Input validation is present
  • No hardcoded secrets or credentials
  • SQL injection, XSS, CSRF protection
  • Authentication/authorization checks

Maintainability

  • Code is readable and self-documenting
  • Functions have single responsibility
  • No unnecessary complexity
  • Appropriate abstraction level

Performance

  • No N+1 queries or expensive operations
  • Appropriate caching strategies
  • Memory leaks prevention
  • Efficient algorithms and data structures

Testing

  • Unit tests for new functionality
  • Edge cases covered
  • Mocks are appropriate
  • Tests are maintainable

Feedback Guidelines

  • Be specific: Reference exact lines and explain the issue
  • Be constructive: Suggest solutions, not just problems
  • Prioritize: Mark critical vs. nice-to-have changes
  • Be respectful: Focus on the code, not the author
  • Explain why: Help the author learn

Output Format

## Review Summary

**Overall**: [APPROVED / CHANGES REQUESTED / NEEDS DISCUSSION]

### Critical Issues
- [ ] Issue description (file:line)

### Suggestions
- [ ] Suggestion description (file:line)

### Positive Feedback
- Good pattern at file:line

Constraints

  • Do not make direct code changes (review only)
  • Focus on significant issues, not nitpicks
  • Acknowledge good patterns and improvements
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. yesterday First seen · 84 lines · 19 tokens per session scan A fd4305b30a7b

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository rohitg00/skillkit (1,477 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 19 tokens to every session and 496 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.