What problem does it solve? Project memory files like CLAUDE.md, todos, and preferences load on every AI session start, and large files consume input tokens repeatedly. This Skill compresses those natural language files into a terse caveman format, cutting token usage by roughly 46% on average while preserving all technical substance. ## Core Features & Use Cases - Token-Reducing Compression: Rewrites prose by removing articles, filler, hedging, and pleasantries while keeping meaning intact. - Strict Preservation: Code blocks, inline code, URLs, file paths, commands, headings, and technical terms are preserved exactly, enforced by automated validation. - Safe Backup Workflow: The original file is saved as FILE.original.md before overwriting, and the original is restored automatically if validation fails after retries. - Use Case: Run it on a 1000-token CLAUDE.md once, and every subsequent session loads the compressed version, saving hundreds of tokens per session. ## Quick Start Ask the AI to compress your CLAUDE.md memory file with the caveman compress command to shrink it and create a readable backup.