In Indicators this is not available yet as the kScript (legacy) recipe: the trade_volume_by_size class that hands every bar's tape pre-bucketed into USD order-size bands is declared for cross-host parity but refused by name (wrun_cells_unavailable), because this data plane has no point lane for it.
The nearest form is the live tape source: a celled input of prints at or above a native-size min_size, read as [offsetMs, price, size, side] blocks, so a whale flow line can start from the moment the daemon subscribes (no history, no USD buckets). For historical aggregate flow, side-split trades.volume inputs accumulate the way the Aggregated CVD recipe does.
What stays on kScript (legacy): the USD size buckets, the retail line, the per-bar trade counts and any bar before the subscription began; run the original with Use kScript engine.