app/api/routers/calendar.py

@@ -299,8 +299,9 @@ def _apply_agent_slot_update(slot: TimeSlot, payload: SlotAgentUpdate) -> None:
         slot.attended = True
 
 
-@router.get(
+@router.api_route(
     "/agent/heartbeat",
+    methods=["GET", "POST"],
     response_model=AgentHeartbeatResponse,
     summary="Get all due slots for the calling agent",
 )