CCA-F: Claude Certified Architect — Foundations

By Anthropic · Question Mode

QuestionQ20

Tool Design & MCP Integration

The update_user_profile tool accepts a required user_id and an optional fields_to_update object. During testing, Claude often leaves out user_id or supplies improperly structured data. What is most important to help Claude understand which parameter values it should provide?

Explanation

Detailed parameter descriptions give Claude the semantic context needed to supply a required identifier and format it correctly. Anthropic’s tool-use guidance identifies detailed descriptions as the most important factor for tool performance and recommends explaining what each parameter means and how it affects tool behavior.

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