Claude Code Compaction: Why Your Session Forgets Mid-Task (and the Fix)
Last week I published a piece about handing off a Claude Code session without re-explaining everything. A reader left a comment that stuck with me: "Compaction is the limit that actually bites." He was right, and I'd glossed over it. So this post is the one I should have written first. If you searched for "claude code compaction" because your session suddenly stopped knowing things it knew an…
Claude Code sessions can suffer from "compaction," a process that happens when the model's context window nears its limit. During compaction, Claude writes a summary of the conversation, trims away the original messages, and continues with the summary plus any remaining unsummarized content. While the session appears to continue seamlessly, you may not realize what information you've lost.
Summaries are good at conveying gist, but they often omit specific decisions and reasons behind them. The fix lies in keeping essential decisions outside the conversation and reloading them after compaction. ContextForge 0.12.0 introduces a Claude Code hook that triggers after every compaction, automatically recalling and printing recent memories and pending tasks.
By configuring the hook to inject this context back into the session, you can minimize the impact of compaction and keep track of important decisions, even if they aren't explicitly mentioned in the compacted transcript.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
