CCDV-F: Claude Certified Developer — Foundations

By Anthropic · Question Mode

QuestionQ11

VerifiedTools and MCPs

A teammate asks why your Claude agent’s tool definitions contain detailed descriptions even though the tool names are already descriptive. They propose removing those descriptions to make the tool definitions simpler. How would you reply?

Explanation

Claude uses a tool’s description to understand what the tool does, when it should and should not be called, and how its parameters affect behavior. Detailed descriptions provide context that tool names cannot reliably express, helping Claude distinguish between tools and select the appropriate one. Anthropic identifies detailed tool descriptions as a key factor in tool-use performance.

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