AI
Claude Code now tidies long idle chats before the cache runs out
Claude Code version 2.1.299, released October 14, adds idle compaction in the terminal. If a conversation is over 200K tokens and sits idle for about 54 minutes, Claude Code now summarizes it before the one-hour prompt cache (a short-term memory that makes resumed chats cheaper) expires. You can tune it with CLAUDE_CODE_IDLE_COMPACT_MIN_TOKENS, or switch it off with "idleCompaction": false.
Some changes can break things. MCP allow rules now match only the named server, so use mcp__<server>__* for a whole server. Skills and commands with hidden or blank-like characters, or < > in their names, will not load until renamed. On your desk: after updating, open your custom skills and MCP permission rules and check that each one still loads.
Read the original at Claude Code changelog →