Instruction: Explain how you would respond to a production break caused by a tool contract change.
Context: Tests how the candidate diagnoses the problem, chooses the safest next step, and reasons through recovery. Explain how you would respond to a production break caused by a tool contract change.
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I would contain it by isolating the contract break quickly. That usually means a compatibility layer, stricter schema validation at the boundary, and failing closed for that tool path until the downstream response is normalized again.
I do not want the model seeing half-broken...
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