CCDV-F: Claude Certified Developer — Foundations

By Anthropic · Question Mode

QuestionQ3

VerifiedTools and MCPs

The team is considering whether to implement a new capability as a custom tool or use an existing built-in tool that almost meets the use case but is missing one specific feature. How should you make the decision?

Explanation

Choose the approach based on whether the built-in tool can be extended to support the missing feature and whether that is preferable to the flexibility, implementation effort, and ongoing maintenance of a custom tool. This evaluates the relevant technical and lifecycle trade-off across both options.

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