Illustrative cover generated by us — see the source repo for real examples.
How to use
- 1
Copy the install prompt
Sign in, then click the black button. One click, done.
- 2
Paste it to your agent
Send it in Claude Code, Codex, Cursor or similar. It installs itself.
- 3
Ask in one sentence
Say what you want, like below, and the agent follows this skill.
/caveman make me: Long agent sessions where token cost mattersExample message showing how to invoke it, not a real output.
What you get
- /caveman mode that stays on until you turn it off
- Terse commit messages and code reviews
- Compression helpers for long context
Good fit
- Long agent sessions where token cost matters
Not for
- User-facing prose that needs a polished tone
This is a pack of 22 skills. The installer lists them all; pick only the ones you need (--skill <name>).
- License
- Apache-2.0
- Author
- @JuliusBrussee
- Source
- JuliusBrussee/caveman/skills · ★ 110,117
Upstream description
🪨 why use many token when few token do trick. Viral skill + proxy for coding agents that cuts 65% of tokens by talking like a caveman.
Other ways to install
Prefer doing it yourself? These commands do the same as the button.
Read https://skilloop.dev/skills/caveman/install.md and follow the instructions to install the skill.
npx skills add https://github.com/JuliusBrussee/caveman -g -a claude-code
npx skills add https://github.com/JuliusBrussee/caveman -g -a codex
git clone --depth 1 https://github.com/JuliusBrussee/caveman.git /tmp/caveman # 22 skills inside — list them, then copy the ones you want: find /tmp/caveman/skills -name SKILL.md mkdir -p ~/.claude/skills && cp -r /tmp/caveman/skills/caveman ~/.claude/skills/caveman
Original work by its authors, redistributed under its license. We only link and describe it.
Related skills
Data Report Page
Turn a CSV, Excel or JSON file into a polished visual report page with charts and key takeaways.
Skill Creator
Create, edit and benchmark your own Agent Skills — including evals and description tuning for better triggering.
Brainstorming Before Building
Makes your coding agent clarify intent, requirements and design with you before it writes any code.
Systematic Debugging
A four-phase debugging discipline: find the root cause before proposing fixes, for any bug or failing test.