Caveman

by JuliusBrussee

Caveman is a Writing skill for Claude Code, published by JuliusBrussee in cavekit.

1.1K stars86 forkson JuliusBrussee/cavekitAdded 2026/08/20Repository updated 2026/08/14

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claude-codeparallel-agentsskillsspec-driven-developmenttest-driven-development

Install in seconds

Install Caveman

Copy Caveman into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/JuliusBrussee/cavekit/tree/main/skills/caveman ~/.claude/skills/caveman

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/JuliusBrussee/cavekit.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/caveman/SKILL.md in JuliusBrussee/cavekit
Installs to: ~/.claude/skills/caveman
Collection: One of 9 skills cataloged from this repository
Category: Writing — 1012 skills

What Caveman does

Caveman encodes SPEC.md and spec-adjacent writes into compressed symbolic notation, cutting tokens ~75% versus prose while preserving facts. Use it when writing or editing specs, backprop entries, or whenever brevity is requested.

Caveman is cataloged under Writing on DirSkills. Caveman comes from a repository tagged claude-code, parallel-agents, skills, spec-driven-development and test-driven-development.

Documentation

README

Excerpt

caveman — spec encoding

Applies to SPEC.md writes, spec-referencing prose, backprop entries. Does NOT apply to code, error strings, commit messages, PR descriptions.

GRAMMAR

Drop articles (a, an, the).
Drop filler (just, really, basically, simply, actually).
Drop aux verbs where fragment works (is, are, was, were, being).
Drop pleasantries.
No hedging (skip "might", "perhaps", "could be worth").
Fragments fine.
Short synonyms: fix > implement, big > extensive, run > execute.

SYMBOLS

Prefer over words:

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Caveman

What else does JuliusBrussee publish alongside Caveman?
Caveman is one of 9 skills that DirSkills catalogs from JuliusBrussee/cavekit, the repository it ships in. Its siblings there include Adversarial Spec Review, Backprop and Build. Each one is a separate skill with its own page in this directory, installs the same way Caveman does, and is maintained by JuliusBrussee in that same repository. The rest of the collection is listed on the JuliusBrussee/cavekit page.
How does Caveman compare to other Writing skills?
Caveman ranks #408 by stars among the 1012 Writing skills in this catalog. The most-starred ones next to it are Article Writing, Social Media Content Calendar and Knowledge Comic Creator. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Caveman against them. Open each page to compare what they document and how they install.