curl --request GET \
  --url https://files-api.evolink.ai/api/v1/files/quota \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "code": 200,
  "data": {
    "user_group": "default",
    "used_files": 35,
    "max_files": 2000,
    "remain_files": 65,
    "is_custom": false,
    "quota_reason": ""
  }
}