development

GAntigravity

Maintain code quality through automated analysis. Identify code smells, suggest refactoring, check for security vulnerabilities, enforce coding standards, and recommend performance optimizations.

code-reviewqualitybest-practicesrefactoring

Version 1.0.0Updated Jan 27, 2026

Capabilities

Identify code smells and anti-patterns

Suggest refactoring improvements

Check for security vulnerabilities

Enforce coding standards and conventions

Performance optimization recommendations

Use cases

Pull-request code reviews

Code-quality audits

Refactoring guidance

Learning best practices

Pre-commit quality checks

Try it

Example prompts to use with this skill

Prompt

Review this React component for best practices

Output

I'll analyze your React component for best practices: **Code Smells Identified:** 1. [x] Missing prop validation 2. [x] Inline function creation in render (performance) 3. [x] Direct state mutation **Recommendations:**

// Before
function UserCard({ user }) {
  const [count, setCount] = useState(0);
  return <button onClick={() => setCount(count + 1)}>Click</button>;
}

// After
interface UserCardProps {
  user: User;
}

function UserCard({ user }: UserCardProps) {
  const [count, setCount] = useState(0);
  const handleClick = useCallback(() => {
    setCount(prev => prev + 1);
  }, []);
  
  return <button onClick={handleClick}>Click {count}</button>;
}

**Improvements:** [+] Added TypeScript interface for props [+] Used useCallback to prevent function recreation [+] Used functional setState to avoid stale closures

Prompt

Check this API endpoint for security issues

Output

Security review of your API endpoint: **Security Issues Found:** 1. [CRITICAL] **SQL Injection Risk**

// Vulnerable
const query = `SELECT * FROM users WHERE id = ${req.params.id}`;

// Secure
const query = 'SELECT * FROM users WHERE id = ?';
db.query(query, [req.params.id]);

2. [HIGH] **Missing Input Validation**

// Add validation
const { error, value } = schema.validate(req.body);
if (error) return res.status(400).json({ error: error.message });

3. [MEDIUM] **No Rate Limiting**

// Add rate limiting middleware
const rateLimit = require('express-rate-limit');
app.use('/api/', rateLimit({ windowMs: 15 * 60 * 1000, max: 100 }));

**Best Practices:** [+] Use parameterized queries [+] Validate all user input [+] Implement rate limiting [+] Add authentication checks [+] Log security events

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