Confirmation Filter

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Confirmation Filter – BOS + Follow-Through

Confirmation Filter is a structure tool that only marks validated shifts in price delivery, not every break of structure.

The script:

Builds swing structure from pivots

Identifies the swing low that carried the last bullish leg and the swing high that carried the last bearish leg

Waits for a close through that key swing (your usual BOS)

Then requires follow-through:

Bearish: within N bars, price makes a new low below the break candle’s low

Bullish: within N bars, price makes a new high above the break candle’s high

Only when this follow-through occurs does the indicator print a Confirmation Bullish / Confirmation Bearish line from the originating swing.

Why use it

Filters out many “one-bar” fake BOS moves

Highlights only those breaks that actually extend in the same direction

Keeps the chart clean by tracking a single confirmed state at a time

Inputs

Pivot length – sensitivity of swing detection

Line extension bars – how far the confirmation level is projected

Max bars for follow-through – window (in bars) within which price must extend beyond the break candle

Show labels – toggle on-chart text tags

Best used together with your own BOS / structure tools:

BOS = first break

Confirmation Filter = breaks that proved themselves with follow-through.

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Description
“Confirmation + Stop-Loss” identifies true structural breaks and filters out fake BOS signals.

The script detects a valid confirmation only when price both breaks a swing level and delivers beyond it. After confirmation, it plots an objective, structure-based stop-loss taken from the meaningful extreme of the break-leg.

No noise, no guessing. Just clean confirmation and a precise invalidation level.