Caveman
Start with Caveman.

Three ways in. All free to install.

npx skills add JuliusBrussee/caveman
npm install -g @caveman-ai/cli && caveman setup --install
Browser extensionChatGPT · Claude · Gemini
Looking for Cloud?Currently in private development.
Installation guide Runs on your machine

caveman skill · MIT · 30+ agents

Why use many token when few token do trick.

A skill your agent loads. It takes the filler out of the answer and leaves code, commands and errors byte-for-byte exact.

72.8kstars on GitHub
Claude Codeskill · caveman · full
illustrative conversation · token counts are approximate~237 → ~68 tokens

Add it to your agent.
One command.

curl -fsSL https://raw.githubusercontent.com/JuliusBrussee/caveman/main/install.sh | bash
GitHub72.8kstars

MIT · Claude Code, Codex, Gemini, Cursor and 30+ more, from the same skill