I created a board here to demonstrate
curl --location 'https://api.figma.com/v1/files/l9giJNba4NDJwBIl5EDD2S' \
--header 'X-Figma-Token: TOKEN'
All I get is
"name": "Elephant23",
"characters": "Elephant23",
...
"name": "Test",
"characters": "Test"
Is this expected?