Tip: Install the 'Caveman' Skill to Cut Output Tokens ~65% Without Losing Answers

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JuliusBrussee/caveman is a Claude Code skill that instructs the model to answer in terse, telegraphic phrasing, cutting an average 65% of output tokens across 10 benchmark prompts (range 22–87%) while preserving the substance of the answer. Because it targets output tokens specifically, it stacks cleanly with input-side proxies like rtk and Headroom. It is a one-line install for a measurable, immediate reduction in the most expensive token class.