threshold is true when the named indicator's value is on the specified side of a number. It exists alongside comparison for clarity in filters - same semantics, slightly different shape.

Shape

{ "type": "threshold", "indicator": "adx", "operator": ">", "value": 25 }

Params

indicator - column to read.
operator - >, <, >=, <=.
value - numeric threshold.

When to pick threshold vs comparison

Behaviorally identical for the value-vs-number case. Some teams use threshold for filters and comparison for side rules to make the intent visible at a glance. Either works.

Pitfalls

The operator must include the equality marker (>= not >) if you want bar-equal-to-threshold to count. Off-by-one on the equality side has cost real fills in our experience.