aihero.dev·May 7, 2026
The AI Coding Dictionary defines "compaction" as an automatic process triggered by the harness when the context window nears capacity, which can lead to the loss of earlier decisions if not managed manually. For more resources and skills in AI engineering, users are encouraged to join AI Hero.
For someone tracking Claude Code, Cursor, Codex, and related AI coding tools, the key takeaway is the importance of manual compaction control in AI workflows. When working with tools that automatically compact or summarize context, like those using a harness, manually controlling what gets summarized can prevent critical early decisions from being lost, ensuring continuity and clarity in your AI coding projects.