curl --request GET \
  --url https://api.hubapi.com/crm/extensions/calling/2026-03/{appId}/settings \
  --header 'Authorization: Bearer <token>'

{
  "createdAt": "2023-11-07T05:31:56Z",
  "height": 123,
  "isReady": true,
  "name": "<string>",
  "supportsCustomObjects": true,
  "supportsInboundCalling": true,
  "updatedAt": "2023-11-07T05:31:56Z",
  "url": "<string>",
  "usesCallingWindow": true,
  "usesRemote": true,
  "width": 123
}