Aggregate · Activation
Rolls up the records that reach this step into a summary — counts, sums, and lists — instead of acting on each one individually.
When to use it
Use it to summarize a run: how many companies matched, the total of a value across them, or a list of names to drop into a notification.
What it does
It waits for the run's records to arrive, then computes the roll-ups you configure and produces them as fields. A following step — often Notify — can report the summary.
Configure it
Roll-ups — choose what to compute: a count of records, a sum or average of a field, or a list of a field's values.
Cost
No credit cost. See Credits in workflows.
Gotchas
Aggregate summarizes a whole run, so it produces its result once the run's records have arrived — not per record.
Pair it with Notify to post the summary to Slack.