curl --request GET \
  --url https://app.gc.ai/api/external/v1/usage \
  --header 'Authorization: <api-key>'

{
  "start_date": "<string>",
  "end_date": "<string>",
  "timezone": "<string>",
  "web": {
    "messages": 123,
    "web_pages_scraped": 123,
    "files_uploaded": 123
  },
  "word": {
    "messages": 123,
    "redlines_applied": 123,
    "drafts_applied": 123
  },
  "api": {
    "requests": 123,
    "by_operation": {}
  }
}