Chapter 5 Exercises

These exercises will help you implement robust validation with AI-friendly error messages.

Quiz

Test your understanding of validation and schema design:

Exercises

1. Validation Errors for AI ⭐⭐ Intermediate (25 min)
   • Implement a ValidationError struct with helpful fields
   • Create errors that help AI clients self-correct
   • Apply the four levels of validation

Key Concepts to Practice

• The Feedback Loop: Errors are how AI learns to use your tools correctly
• Structured Error Codes: RATE_LIMITED, NOT_FOUND, INVALID_FORMAT enable programmatic decisions
• Expected vs Received: Always show what you expected and what was sent
• Examples in Errors: Include concrete examples the AI can copy

Next Steps

After completing these exercises, continue to:

• Resources, Prompts, and Workflows - Give users control
• Chapter 4 Exercises - Review tool design principles