AI prompts that
actually work
for developers

Build a complete REST API endpoint in [framework] for [resource].

Requirements:
- [HTTP method] endpoint at /api/[path]
- Request validation with proper error messages
- Database interaction using [ORM/library]
- Proper HTTP status codes (200, 201, 400, 404, 500)
- Error handling with try/catch
- TypeScript types for request and response

Return the complete implementation with inline comments.

I have a bug in my [language/framework] application.

What's happening: [describe the current behavior]
What should happen: [describe expected behavior]
Error message (if any): [paste error]

Please:
1. List the most likely causes ranked by probability
2. For each cause, provide a specific diagnostic step
3. Once identified, provide the fix with explanation
4. Suggest a test to prevent regression

Analyze this code for performance issues:

```[language]
[paste code]
```

For each issue found:
1. Explain why it's slow (Big O complexity if relevant)
2. Show the optimized version
3. Estimate the improvement (e.g., "O(n²) → O(n)")
4. Note any tradeoffs of the optimization

Focus on: algorithmic complexity, memory usage, unnecessary
re-renders, N+1 queries, and blocking operations.