# Compaction

Band: established — Settled. Documented by a primary source and not seriously disputed.
Group: The window
Implemented by: https://clickai.dev/skills/handoff

Summarising a conversation that is nearing the window limit and restarting in a fresh one. The hard part is selection: what gets kept and what gets discarded. The corollary engineers keep relearning expensively is that conversation is exactly what compaction eats, so anything load-bearing has to live in a file the agent will read back.

## See also

- [Context rot](https://clickai.dev/legend/context-rot)
- [Handoff artifact](https://clickai.dev/legend/handoff-artifact)
- [AGENTS.md](https://clickai.dev/legend/agents-md)

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Full legend: https://clickai.dev/legend.md