Quick Reference: Handle the “JSON Mode Is Enough” Objection

The model already returns valid JSON. Why do we need a schema and another validator on top of that? Valid JSON only tells us the payload is parseable. It does not tell us the keys are the right ones, the enums are stable, the required fields are present, or the live business facts make the action safe. Schema and validation answer those separate questions. This response is strong because it concedes the real value of JSON mode while drawing a clean line between parseability, structural contract, and operational trust. Support angle for a PM Name the user-visible failure: silent misrouting,…

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