Caveman Skill Explodes to 64K Stars — Claude Code Skill Cuts 65% of Tokens by Talking Like a Caveman

GitHub·high signal

JuliusBrussee's caveman skill has gone viral at 64,487 GitHub stars, reducing Claude Code token usage by 65% through a simple trick: making the AI communicate in terse, caveman-style language. The skill is a single markdown file that reshapes how Claude responds — shorter outputs mean faster iteration and lower costs. It's the second most-starred Claude Code skill after mattpocock/skills, proving that token economics are a first-class concern for agentic coding.