caveman-compress

70 / 100 · Review before installing

Check before installing. Some of what it can do is expected: a coding skill usually runs build and test commands.

By JuliusBrussee/caveman (GitHub) · coding · 118,803 stars · scanned at commit 3dc497a

Compress a memory file such as CLAUDE.md or a todo list into caveman format to save input tokens, keeping a readable backup. Sends the file's text to the configured model provider. Trigger: /caveman-compress.

Works with any agent that supports SKILL.md skills.

What this skill can do

Runs commands on your computer

The author does not mention this. It runs automatically when the plugin is installed. Expected for a coding skill.

Found in 10 places.

skills/caveman-compress/SECURITY.md, line 91. **subprocess usage**: The skill calls the `claude` CLI via `subprocess.run()` as a fallback when `ANTHROPIC_API_KEY` is not set. It can also call `opencode r
skills/caveman-compress/scripts/compress.py, line 588result = subprocess.run(command, **run_kwargs)
skills/caveman-compress/scripts/compress.py, line 592except subprocess.CalledProcessError as error:

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skills/caveman-compress/scripts/compress.py, line 595except subprocess.TimeoutExpired as error:
skills/caveman-compress/scripts/compress.py, line 787``ANTHROPIC_API_KEY`` to route through the SDK and skip the subprocess.
.claude-plugin/plugin.json, line 15"command": "command -v node >/dev/null 2>&1 || exit 0; HOOK_ROOT=$(printf %s \"${CLAUDE_PLUGIN_ROOT}\" | sed 's|^/\$[a-zA-Z]\$/|\\1:/|'); node \"$HOOK_ROOT/sr
.claude-plugin/plugin.json, line 27"command": "command -v node >/dev/null 2>&1 || exit 0; HOOK_ROOT=$(printf %s \"${CLAUDE_PLUGIN_ROOT}\" | sed 's|^/\$[a-zA-Z]\$/|\\1:/|'); node \"$HOOK_ROOT/sr
.claude-plugin/plugin.json, line 39"command": "command -v node >/dev/null 2>&1 || exit 0; HOOK_ROOT=$(printf %s \"${CLAUDE_PLUGIN_ROOT}\" | sed 's|^/\$[a-zA-Z]\$/|\\1:/|'); node \"$HOOK_ROOT/sr
.claude-plugin/plugin.json, line 51"command": "command -v node >/dev/null 2>&1 || exit 0; HOOK_ROOT=$(printf %s \"${CLAUDE_PLUGIN_ROOT}\" | sed 's|^/\$[a-zA-Z]\$/|\\1:/|'); node \"$HOOK_ROOT/sr
hooks/hooks-cursor.json, line 6"command": "node \"${CURSOR_PLUGIN_ROOT}/src/hooks/caveman-host-session-start.js\" cursor",

Sends data to these websites: api.anthropic.com

The author does not mention this.

Found in 4 places.

skills/caveman-compress/scripts/compress.py, line 23import urllib.request
skills/caveman-compress/scripts/compress.py, line 611import anthropic
skills/caveman-compress/scripts/compress.py, line 735request = urllib.request.Request(

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skills/caveman-compress/scripts/compress.py, line 746with urllib.request.urlopen(request, timeout=CLAUDE_CALL_TIMEOUT_SECONDS) as response:

Can call paid AI services billed to you

This is disclosed by the author in the skill's SKILL.md or README.

Found in 2 places.

skills/caveman-compress/scripts/compress.py, line 611import anthropic
SECURITY.md, line 41| Local Proxy + Engine | No | Request content, possibly transformed, and provider credentials go to the provider selected by the agent. Recovery originals stay

Downloads and installs other software

The author does not mention this.

Found in 2 places.

SECURITY.md, line 400- Skill scanners (Snyk Agent Scan, `npx skills` risk ratings) can rate
SECURITY.md, line 407`npx skills add JuliusBrussee/caveman --skill caveman`.

Safer alternatives

Low-risk skills in the same category (coding) that look related. Check that one does what you need.

Other copies in this repository

JuliusBrussee/caveman has 1 more folder with a skill named caveman-compress. This page shows the lowest-scoring copy.

plugins/caveman/skills/caveman-compress 85/100 · Low risk

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'caveman-compress' ] || [ -L ~/.agents/skills/'caveman-compress' ]; then echo 'A skill folder named caveman-compress already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/JuliusBrussee/caveman' "$d" && git -C "$d" checkout --quiet '3dc497a7f858c774d6e15b25e8c6120ef3a0eda8' -- 'skills/caveman-compress' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/caveman-compress' ~/.agents/skills/'caveman-compress' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'caveman-compress' ~/.claude/skills/'caveman-compress' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-10	`3dc497a`	70
2026-11-08	`1e91f13`	70
2026-11-07	`c310c9d`	60