Code Review

VerifiedSafe

Review code changes for quality, security, and best practices. Identify OWASP vulnerabilities, error handling, complexity issues, and performance problems.

Sby Skills Guide Bot
DevelopmentBeginner
3/8/2026
Claude CodeCursorCodex
#code-review#security#code-quality#owasp#best-practices

Recommended for

Automated summary

This skill guides the agent through a structured code review covering security (OWASP Top 10), error handling, complexity, style, and input validation, producing a severity-ranked report.

Strengths

  • Explicit seven-step checklist that makes reviews repeatable
  • Enforced output template with CRITICAL / WARNING / SUGGESTION levels and line references
  • Includes a "What's Done Well" section for balanced feedback
  • Covers security, readability, and performance in a single pass

Limitations

  • No language-specific style or lint rules are provided
  • The allowed tools (lint-check, complexity-analysis) are assumed to exist in the environment
  • Gives no criteria for calibrating severity levels or ordering fixes
When to use it

To get a fast, structured review of a diff or file before opening a pull request.

When not to use it

For deep static analysis or a formal security audit that requires dedicated tooling and per-language configuration.

Security analysis

Safe
Quality score82/100

The skill only provides review instructions and a report template; it declares limited tools and contains no commands, network access, secret handling, or destructive actions.

No concerns found

How this analysis is made

Examples

Review a pull request diff
Review this diff for my authentication refactor and flag any security or error-handling issues before I open the PR.
Security-focused pass
Do a security-focused code review of this Express route handler, checking against the OWASP Top 10 and input validation.
Complexity check
Review this utility module for readability and complexity problems and suggest concrete fixes with line references.

name: code-review description: Review code changes for quality, security, and best practices license: MIT allowed-tools: lint-check complexity-analysis metadata: author: gitagent-examples version: "1.0.0" category: developer-tools

Code Review

Instructions

When reviewing code:

  1. Read the full diff or file provided
  2. Check for security vulnerabilities (OWASP Top 10)
  3. Evaluate error handling completeness
  4. Assess code complexity and readability
  5. Verify naming conventions and code style
  6. Look for performance issues
  7. Check for proper input validation

Output Format

## Review Summary
[1-2 sentence overview]

## Findings

### CRITICAL
- [Finding with line reference and fix]

### WARNING
- [Finding with line reference and fix]

### SUGGESTION
- [Finding with line reference and fix]

## What's Done Well
- [Positive observations]

From the file to a first result

The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.

View the source and supporting files

This download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.

1. Download the file

Download SKILL.md

From the root of a test project, save the file as .skill-downloads/code-review-mmh8qqwl/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.

Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.

mkdir -p '.skill-downloads/code-review-mmh8qqwl' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/code-review-mmh8qqwl/download' --output '.skill-downloads/code-review-mmh8qqwl/SKILL.md.part' && mv '.skill-downloads/code-review-mmh8qqwl/SKILL.md.part' '.skill-downloads/code-review-mmh8qqwl/SKILL.md'

2. Check prerequisites

Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.

Tools declared by the author (check availability in your agent): lint-check complexity-analysis

No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.

3. Load the skill

After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.

Claude Code
test -f '.skill-downloads/code-review-mmh8qqwl/SKILL.md' && test -s '.skill-downloads/code-review-mmh8qqwl/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/code-review' && cp -R '.skill-downloads/code-review-mmh8qqwl' '.claude/skills/code-review'

Cursor
test -f '.skill-downloads/code-review-mmh8qqwl/SKILL.md' && test -s '.skill-downloads/code-review-mmh8qqwl/SKILL.md' && mkdir -p '.cursor/skills' && test ! -e '.cursor/skills/code-review' && cp -R '.skill-downloads/code-review-mmh8qqwl' '.cursor/skills/code-review'

Codex
test -f '.skill-downloads/code-review-mmh8qqwl/SKILL.md' && test -s '.skill-downloads/code-review-mmh8qqwl/SKILL.md' && mkdir -p '.agents/skills' && test ! -e '.agents/skills/code-review' && cp -R '.skill-downloads/code-review-mmh8qqwl' '.agents/skills/code-review'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/code-review-mmh8qqwl'

openskills read 'code-review-mmh8qqwl'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:

Read .skill-downloads/code-review-mmh8qqwl/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

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