Claude code - Cultivate your context window to get the max out of your tokens

A three-tier approach to managing Claude Code context windows addresses bloat from unnecessary codebase reading by implementing a Registry of all repos, per-repo codemaps loaded on demand, and just-in-time tools that fetch specific information when needed. The per-repo codemap layer achieved a measured 33x compression of input tokens in one active project. The Registry loads automatically at session start while the other layers provide additional context selectively based on current work.