mediumAnthropic OpenAI Microsoft

Your agent has many tools but keeps picking the wrong one or passing wrong parameters. How do you fix it?

Tool selection and parameter extraction are where agents quietly fail. The strongest answer treats the tool spec as the only thing the model sees, then fixes the design, not the model. Here is how.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Tool selection and parameter extraction are where agents quietly fail. The strongest answer treats the tool spec as the only thing the model sees, then fixes the design, not the model. Here is how.

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