Claude Code – Everything You Can Configure That the Docs Don't Tell You
Summary
The article uncovers a trove of undocumented features in Claude Code's source code, including an auto-mode classifier, hooks (PreToolUse, SessionStart, PostToolUse), and memory systems that enable self-improvement and persistence across sessions. It provides concrete examples, configuration formats, and cautionary notes about versioning, showing how developers can extend Claude Code beyond official docs.