Unverified50% confidenceFactExact time
In Claude, guards are called pre_tool_use hooks paired with a deny response; in OpenAI, the counterpart is tool_input_guardrail, which returns a rejection payload.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/11/2026
First Seen
Valid until: 1/9/2027
Sources
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