What Order does, and when it works.
Order Block indicators automate a core Smart Money Concepts idea: the last opposing candle before an impulsive move marks an institutional 'order block' that price often revisits. Most scripts also draw Break of Structure (BOS) and Fair Value Gaps (FVG) for a full structural read.
They save the hours of manual mark-up that ICT/SMC trading normally demands, and keep your zones consistent. The better scripts let you tune mitigation rules and only show higher-timeframe blocks.
SMC is interpretive — order block tools draw zones, they do not confirm the institutional intent the methodology assumes. Backtest the rules you actually trade.