curl --request POST \
  --url https://dev.voice.ai/api/v1/google/{agent_id}/oauth/start \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "return_path": "<string>",
  "managed_tools": {
    "google_calendar": {
      "enabled": true,
      "default_calendar_id": "<string>",
      "timezone": "<string>",
      "selected_operations": [
        "google_calendar_check_availability"
      ]
    },
    "google_sheets": {
      "enabled": true,
      "spreadsheet_id": "<string>",
      "sheet_name": "<string>",
      "selected_operations": [
        "google_sheets_append_row"
      ]
    },
    "google_gmail": {
      "enabled": true,
      "selected_operations": [
        "google_gmail_search_messages"
      ]
    }
  }
}
'

{
  "auth_url": "<string>",
  "requested_scopes": [
    "<string>"
  ]
}