Spot the Missing Runtime Gate
Distinguish schema validity from runtime validity when a tool call depends on live policy or state.
The shape is valid. The policy may not be. Which part of this workflow is the real issue? Schema validator passed Passing schema validation is good. It proves shape constraints, not live coupon eligibility. No live promotion-policy gate before execution Correct. Business-state checks must run after schema validation and before the tool action executes. Tool output returned to the model Returning tool output is part of the normal tool-calling loop. The unsafe gap is earlier, before execution. Product manager watching the workflow Observation helps incident response, but manual attention is not a validation mechanism in the execution path. Secure checkout…
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