Compact conversation?

Lots of more capable agents like coding agents have a compact conversation feature that takes the conversation above it and condenses it down to something that reduces context use. I’ve found that context overflow / poisoning can be a problem in long dialogues. I usually kind of do this manually, have it summarize and then make a new discussion, but a way to compact and then a feature to include the previous N up to and including the most recent compacting would be nice.