Claude Certified Developer – Foundations (CCDV-F) Practice Test

Tool descriptions that enable reliable tool selection are those that spell out exactly what the tool does, what input it expects, and what output it provides. The description that searches customer records by customer ID and returns account details does just that: it defines the action (search records), the input (customer ID), and the result (account details). This level of specificity lets you verify fit for a task, understand the data involved, and anticipate the results you’ll get, which is essential for choosing the right tool in real workflows.

The other options don’t provide enough detail to make a confident choice. A label like “Database Tool” is too broad and doesn’t indicate what operation it performs or what data it accesses. “Useful Tool” is subjective and vague, offering no concrete behavior to evaluate. “Tool #1” is meaningless without a defined function.