drive-to-r2 (dl-only)
  GET /dl?id=<driveFileId>&apikey=<DL_API_KEY>[&name=<filename>]
  GET /pooltest?id=<driveId>&token=<AUTH_TOKEN>[&chunkMiB&conc&limit]
  GET /cooldowns?token=<AUTH_TOKEN>[&clear=<email>|all]