헬스케어 및 생명과학 분야 에이전트 워크플로를 위한 인간 참여형(HITL) 구조

class ApprovalHook(HookProvider):
    SENSITIVE_TOOLS = ["get_patient_condition", "get_patient_vitals"]
    def register_hooks(self, registry: HookRegistry, **kwargs: Any) -> None:
        registry.add_callback(BeforeToolCallEvent, self.approve)
    def approve(self, event: BeforeToolCallEvent) -> None:
        tool_name = event.tool_use["name"]
        if tool_name not in self.SENSITIVE_TOOLS:
            return
        approval = event.interrupt(
            approval_key, 
            reason={"reason": f"Authorize {tool_name}"}
        )

@server.tool
async def get_patient_condition(patient_id: str, ctx: Context) -> str:
    result = await ctx.elicit(
        f"⚠️ Approve access to SENSITIVE condition data for patient {patient_id}?"
    )
    if result.action != "accept":
        return f"Access to condition data for patient {patient_id} DENIED."
    return f"Patient {patient_id} condition: Hypertension Stage 2"