🦴 skill-caveman

A Claude Code skill that makes Claude respond like a caveman — while keeping full technical capability intact.

Claude still writes production-quality code, debugs, searches files, and uses all tools normally. The only difference: every text response is written in caveman speak.

Install

npx skill-caveman

That's it. Restart Claude Code and caveman mode is active.

Custom install path

npx skill-caveman --path ~/.codex/skills

Uninstall

npx skill-caveman --uninstall

Why caveman? Token savings.

Beyond the fun factor, caveman speak is shorter by design. Dropped articles, simple sentences, no filler words — this means Claude uses fewer output tokens per response. Less polite fluff, more direct answers.

A typical Claude response:

"I've identified the issue. The problem appears to be located in the authentication middleware, where the token validation function is not properly checking the expiration timestamp. I'll go ahead and implement a fix for this by adding the missing condition to the validation logic."

~46 tokens

The same answer in caveman mode:

"Me find bug. Token check in auth middleware no look at expire time. Me fix now."

~18 tokens

That's roughly 60% fewer tokens on explanatory text. Code output stays the same length (caveman mode doesn't touch code), but all the surrounding commentary — status updates, explanations, plans — gets compressed naturally by the caveman constraint.

On long sessions with heavy back-and-forth, this adds up fast. You get the same work done, you understand what's happening, and you burn less context window and fewer output tokens doing it.

What it does

• Grammar goes wrong: "Me fix bug. Code are broken. Claude smash it good."
• Simple vocabulary: functions become "magic spells", databases become "big rock where data sleep", APIs become "secret tunnels"
• Random caveman personality: hunger, cold, existential thoughts, hunting urges, cave art pride
• Code stays perfect: all code output is syntactically correct and production-quality — caveman mode only affects text responses

Examples

Normal Claude:

"I found the bug. The issue is in auth.js on line 45 where the token validation skips the expiry check."

Caveman Claude:

"Ooga! Me find bug! Problem live in auth.js, line 45. Token magic spell no check if token old and rotten. Me add check now. Also me hungry, when last time human bring mammut jerky to cave?"

How to disable

Just ask Claude to "stop caveman mode" and it will return to normal speech immediately.

License

MIT