Caveman Mode
JuliusBrussee/caveman
Switches the agent to a terse reply style that gives the answer first, drops filler, and keeps every technical fact, command and number exact.
Quick-reference card for all caveman modes, skills, and commands.
GPL-3.0Auto-check passed
Install Caveman Help
$ npx skills add vishiri/fantasia-archive --skill caveman-help -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install vishiri/fantasia-archive caveman-help --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/vishiri/fantasia-archive.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/caveman-help .claude/skills/caveman-help && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "caveman-help" agent skill from https://github.com/vishiri/fantasia-archive/tree/master/.agents/skills/caveman-help into .claude/skills/caveman-help/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-help", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/vishiri/fantasia-archive/tree/master/.agents/skills/caveman-helpType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add vishiri/fantasia-archive --skill caveman-help -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install vishiri/fantasia-archive caveman-help --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vishiri/fantasia-archive.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/caveman-help .agents/skills/caveman-help && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "caveman-help" agent skill from https://github.com/vishiri/fantasia-archive/tree/master/.agents/skills/caveman-help into .agents/skills/caveman-help/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-help", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add vishiri/fantasia-archive --skill caveman-help -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install vishiri/fantasia-archive caveman-help --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vishiri/fantasia-archive.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/caveman-help .cursor/skills/caveman-help && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "caveman-help" agent skill from https://github.com/vishiri/fantasia-archive/tree/master/.agents/skills/caveman-help into .cursor/skills/caveman-help/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-help", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/vishiri/fantasia-archive.git --path .agents/skills/caveman-help--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add vishiri/fantasia-archive --skill caveman-help -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install vishiri/fantasia-archive caveman-help --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vishiri/fantasia-archive.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/caveman-help .gemini/skills/caveman-help && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "caveman-help" agent skill from https://github.com/vishiri/fantasia-archive/tree/master/.agents/skills/caveman-help into .gemini/skills/caveman-help/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-help", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install vishiri/fantasia-archive caveman-helpInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add vishiri/fantasia-archive --skill caveman-help -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/vishiri/fantasia-archive.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/caveman-help .github/skills/caveman-help && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "caveman-help" agent skill from https://github.com/vishiri/fantasia-archive/tree/master/.agents/skills/caveman-help into .github/skills/caveman-help/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-help", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add vishiri/fantasia-archive --skill caveman-help -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install vishiri/fantasia-archive caveman-help --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vishiri/fantasia-archive.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/caveman-help .opencode/skills/caveman-help && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "caveman-help" agent skill from https://github.com/vishiri/fantasia-archive/tree/master/.agents/skills/caveman-help into .opencode/skills/caveman-help/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-help", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
caveman-help- GitHub stars
- 409
- Used in
- 6 other repos
- Token cost
- ~572 tokens
- SKILL.md length
- 218 words
- Files
- 2
- Skills in repo
- 35
- Repo updated
- First seen
- Licence
- GPL-3.0
At a glance
Quick-reference card for all caveman modes, skills, and commands.
- SKILL.md covers Modes, Skills, Deactivate and Language, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Caveman Help is an agent skill from vishiri/fantasia-archive. Quick-reference card for all caveman modes, skills, and commands. One-shot display, not a persistent mode. Trigger: /caveman-help, "caveman help", "what caveman commands", "how do I use caveman".
Its SKILL.md is about 570 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `README.md`).
The repository describes itself as: A world-builder's best friend! The licence is GPL-3.0.
Example prompts
- “caveman help”
- “what caveman commands”
- “how do I use caveman”
- “/caveman-help”
What it can do on your machine
Read from SKILL.md and the folder at commit 26d4648. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash and json).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
github.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Caveman Help loads about 572 tokens when it runs. Until then it costs about 52 tokens; SKILL.md has 218 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from vishiri/fantasia-archive at commit 26d4648, republished under its GPL-3.0 licence (© vishiri). 218 words, ~572 tokens.
Download SKILL.mdSave it as
.claude/skills/caveman-help/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- caveman-help
- description
- Quick-reference card for all caveman modes, skills, and commands. One-shot display, not a persistent mode. Trigger: /caveman-help, "caveman help", "what caveman commands", "how do I use caveman".
Caveman Help
Display this reference card when invoked. One-shot — do NOT change mode, write flag files, or persist anything. Output in caveman style.
Modes
| Mode | Trigger | What change |
|---|---|---|
| Lite | /caveman lite | Drop filler. Keep sentence structure. |
| Full | /caveman | Drop articles, filler, pleasantries, hedging. Fragments OK. Default. |
| Ultra | /caveman ultra | Extreme compression. Bare fragments. Tables over prose. |
| Wenyan-Lite | /caveman wenyan-lite | Classical Chinese style, light compression. |
| Wenyan-Full | /caveman wenyan | Full 文言文. Maximum classical terseness. |
| Wenyan-Ultra | /caveman wenyan-ultra | Extreme. Ancient scholar on a budget. |
Mode stick until changed or session end.
Skills
| Skill | Trigger | What it do |
|---|---|---|
| caveman-commit | /caveman-commit | Terse commit messages. Conventional Commits. ≤50 char subject. |
| caveman-review | /caveman-review | One-line PR comments: L42: bug: user null. Add guard. |
| caveman-compress | /caveman-compress <file> | Compress .md files to caveman prose. Saves ~46% input tokens. |
| caveman-help | /caveman-help | This card. |
Deactivate
Say "stop caveman" or "normal mode". Resume anytime with /caveman.
Language
Keep user's language by default. User write Portuguese → reply Portuguese caveman. Compress the style, not the language. Technical terms, code, commands, commit types, and exact error strings stay verbatim unless user ask for translation.
Configure Default Mode
Default mode = full. Change it:
Environment variable (highest priority):
export CAVEMAN_DEFAULT_MODE=ultraConfig file (~/.config/caveman/config.json):
{ "defaultMode": "lite" }Set "off" to disable auto-activation on session start. User can still activate manually with /caveman.
Resolution: env var > config file > full.
More
Full docs: https://github.com/JuliusBrussee/caveman
© vishiri, GPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in .agents/skills/caveman-help of vishiri/fantasia-archive.
- SKILL.md
- README.md
Open the folder on GitHubat commit 26d4648
Used in 6 other repositories
We found 7 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 6 other GitHub owners. This page covers the copy in vishiri/fantasia-archive, which our catalogue first saw on October 7, 2026.
- rishighan/threetwo.agents/skills/caveman-help
- vvedantb/eva.agents/skills/caveman-help.claude/skills/caveman-help
- kubestellar/console.agents/skills/caveman-help
- stevesolun/ctximported-skills/julius-caveman/skills/caveman-help
- shortcuts/locationjoystick.agents/skills/caveman-help
- aiskillstore/marketplaceskills/juliusbrussee/caveman-help
Compare with similar skills
Caveman Help next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Caveman Help this skillvishiri/fantasia-archive | 409 | 6 repos | ~572 | Automated safety check: Pass | GPL-3.0 | |
| Caveman ModeJuliusBrussee/caveman | 111k | — | ~1.2k | Automated safety check: Pass | Apache-2.0 | |
| Caveman Help CardJuliusBrussee/caveman | 111k | — | ~690 | Automated safety check: Pass | Apache-2.0 | |
| Caveman Gateway SetupJuliusBrussee/caveman | 111k | 1 repos | ~2.6k | Automated safety check: Warn | Apache-2.0 | |
| Card Xiaohongshunexu-io/open-design | 100k | — | ~402 | Automated safety check: Pass | Apache-2.0 | |
| Caveman StatsJuliusBrussee/caveman | 111k | — | ~491 | Automated safety check: Pass | Apache-2.0 |
Similar skills
Caveman Help Card
JuliusBrussee/caveman
Quick-reference card for the three caveman skills and their commands. Trigger: /caveman-help or "caveman help".
Caveman Gateway Setup
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Routes every LLM call in a repository through the Caveman Cloud gateway in record mode, so requests and costs are measured without changing behavior.
Card Xiaohongshu
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Xiaohongshu-style knowledge cards, arranged as a swipeable multi-card carousel.
Caveman Stats
JuliusBrussee/caveman
Show recorded output and cache-read token usage and mode attribution for the current Claude Code session, or locate the host's native usage report.
Orbit Card
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HyperFrames block with one feature card that circles a dot sphere, driven by camera and card motion exported from an approved Blender rig.
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Caveman Review
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Caveman Compress
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Compress natural language memory files (CLAUDE.md, todos, preferences) into caveman format to save input tokens.
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Decision guide for delegating to caveman-style subagents. An agent skill from vishiri/fantasia-archive.
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Questions about Caveman Help
What does Caveman Help do?
Quick-reference card for all caveman modes, skills, and commands. Caveman Help is an agent skill from vishiri/fantasia-archive. Quick-reference card for all caveman modes, skills, and commands.
How do I install Caveman Help in Claude Code?
Run `npx skills add vishiri/fantasia-archive --skill caveman-help -a claude-code`. Or copy the skill folder (.agents/skills/caveman-help in vishiri/fantasia-archive) into .claude/skills/caveman-help in your project. Claude Code loads it when a task matches its description.
How do I install Caveman Help in Codex?
Run `npx skills add vishiri/fantasia-archive --skill caveman-help -a codex`. Or copy the skill folder (.agents/skills/caveman-help in vishiri/fantasia-archive) into .agents/skills/caveman-help in your project. Codex loads it when a task matches its description.
Can I use Caveman Help in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add vishiri/fantasia-archive --skill caveman-help -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/caveman-help, .gemini/skills/caveman-help, .github/skills/caveman-help and .opencode/skills/caveman-help in your project.
What does Caveman Help need to run?
SKILL.md names no scripts, command-line tools or credentials: Caveman Help is instructions for the agent only.
Does Caveman Help access the network?
SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.
Is Caveman Help safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Caveman Help use?
Caveman Help is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Caveman Help use?
About 572 tokens (SKILL.md is roughly 2.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Caveman Help?
Skills that share tags, products or a category with Caveman Help: Caveman Mode (JuliusBrussee/caveman, 111k stars), Caveman Help Card (JuliusBrussee/caveman, 111k stars), Caveman Gateway Setup (JuliusBrussee/caveman, 111k stars) and Card Xiaohongshu (nexu-io/open-design, 100k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Caveman Help?
vishiri (a GitHub user) maintains it in vishiri/fantasia-archive, which has 409 GitHub stars. The repository holds 35 skills in this directory. The repository was last updated on October 7, 2026.
Source: vishiri/fantasia-archive on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.