diff --git a/src/pages/CalendarPage.tsx b/src/pages/CalendarPage.tsx
index 01175f9..b94f91b 100644
--- a/src/pages/CalendarPage.tsx
+++ b/src/pages/CalendarPage.tsx
@@ -228,12 +228,17 @@ export default function CalendarPage() {
       let response: any
       if (editingSlot) {
         // Edit existing slot
-        payload.date = selectedDate
-        response = await api.post(`/calendar/edit?date=${selectedDate}&slot_id=${editingSlot.slot_id}`, payload)
+        if (editingSlot.is_virtual) {
+          response = await api.patch(`/calendar/slots/virtual/${editingSlot.slot_id}`, payload)
+        } else if (editingSlot.slot_id) {
+          response = await api.patch(`/calendar/slots/${editingSlot.slot_id}`, payload)
+        } else {
+          throw new Error('Missing slot identifier for edit')
+        }
       } else {
         // Create new slot
         payload.date = selectedDate
-        response = await api.post('/calendar/schedule', payload)
+        response = await api.post('/calendar/slots', payload)
       }
 
       // Check for warnings in response
@@ -260,7 +265,13 @@ export default function CalendarPage() {
     if (!confirm(`Cancel this ${slot.slot_type} slot at ${slot.scheduled_at}?`)) return
     setError('')
     try {
-      await api.post(`/calendar/cancel?date=${selectedDate}&slot_id=${slot.slot_id}`)
+      if (slot.is_virtual) {
+        await api.post(`/calendar/slots/virtual/${slot.slot_id}/cancel`)
+      } else if (slot.slot_id) {
+        await api.post(`/calendar/slots/${slot.slot_id}/cancel`)
+      } else {
+        throw new Error('Missing slot identifier for cancel')
+      }
       fetchSlots(selectedDate)
     } catch (err: any) {
       setError(err.response?.data?.detail || 'Cancel failed')