curl --request GET \
  --url https://api.mnemom.ai/v1/billing/features \
  --header 'Authorization: Bearer <token>'

{
  "plan_id": "<string>",
  "feature_flags": {},
  "limits": {},
  "included_checks": 123,
  "check_count_this_period": 123,
  "subscription_status": "<string>"
}