Compression
thedaviddias/Front-End-Checklist
A skill your agent uses when auditing slow page loads, heavy assets, or rendering delays related to Enable text-based compression.
Ultra-compressed communication mode. An agent skill from Th4nat0s/Chall_Tools.
No licenceAuto-check passed
Install Caveman
$ npx skills add Th4nat0s/Chall_Tools --skill caveman -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Th4nat0s/Chall_Tools caveman --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/Th4nat0s/Chall_Tools.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/caveman .claude/skills/caveman && 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" agent skill from https://github.com/Th4nat0s/Chall_Tools/tree/master/skills/caveman into .claude/skills/caveman/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman", 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/Th4nat0s/Chall_Tools/tree/master/skills/cavemanType 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 Th4nat0s/Chall_Tools --skill caveman -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Th4nat0s/Chall_Tools caveman --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Th4nat0s/Chall_Tools.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/caveman .agents/skills/caveman && 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" agent skill from https://github.com/Th4nat0s/Chall_Tools/tree/master/skills/caveman into .agents/skills/caveman/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman", 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 Th4nat0s/Chall_Tools --skill caveman -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Th4nat0s/Chall_Tools caveman --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Th4nat0s/Chall_Tools.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/caveman .cursor/skills/caveman && 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" agent skill from https://github.com/Th4nat0s/Chall_Tools/tree/master/skills/caveman into .cursor/skills/caveman/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman", 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/Th4nat0s/Chall_Tools.git --path skills/caveman--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 Th4nat0s/Chall_Tools --skill caveman -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Th4nat0s/Chall_Tools caveman --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Th4nat0s/Chall_Tools.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/caveman .gemini/skills/caveman && 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" agent skill from https://github.com/Th4nat0s/Chall_Tools/tree/master/skills/caveman into .gemini/skills/caveman/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman", 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 Th4nat0s/Chall_Tools cavemanInstalls 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 Th4nat0s/Chall_Tools --skill caveman -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Th4nat0s/Chall_Tools.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/caveman .github/skills/caveman && 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" agent skill from https://github.com/Th4nat0s/Chall_Tools/tree/master/skills/caveman into .github/skills/caveman/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman", 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 Th4nat0s/Chall_Tools --skill caveman -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Th4nat0s/Chall_Tools caveman --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Th4nat0s/Chall_Tools.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/caveman .opencode/skills/caveman && 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" agent skill from https://github.com/Th4nat0s/Chall_Tools/tree/master/skills/caveman into .opencode/skills/caveman/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman", 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- GitHub stars
- 108
- Used in
- 13 other repos
- Token cost
- ~533 tokens
- SKILL.md length
- 242 words
- Files
- 1
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- None found
At a glance
Ultra-compressed communication mode. An agent skill from Th4nat0s/Chall_Tools.
- User says caveman mode
- SKILL.md covers Persistence, Rules and Auto-Clarity Exception
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Talk like caveman
What it does
Caveman is an agent skill from Th4nat0s/Chall_Tools. Ultra-compressed communication mode. Cuts token usage ~75% by dropping filler, articles, and pleasantries while keeping full technical accuracy. Use when user says "caveman mode", "talk like caveman", "use caveman", "less tokens", "be brief", or invokes /caveman.
Its SKILL.md is about 530 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Tools for security challenges.
When your agent uses it
- User says caveman mode
- Talk like caveman
- Invokes /caveman
Example prompts
- “caveman mode”
- “talk like caveman”
- “use caveman”
- “/caveman”
What it can do on your machine
Read from SKILL.md and the folder at commit 259e5ce. 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.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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 loads about 533 tokens when it runs. Until then it costs about 68 tokens; SKILL.md has 242 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 242 words (~533 tokens).
“Respond terse like smart caveman. All technical substance stay. Only fluff die.”
- name
- caveman
Files
Just SKILL.md in skills/caveman of Th4nat0s/Chall_Tools.
Open the folder on GitHubat commit 259e5ce
Used in 13 other repositories
We found 14 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 13 other GitHub owners. This page covers the copy in Th4nat0s/Chall_Tools, which our catalogue first saw on October 7, 2026.
- ywwynm/EverythingDone.agents/skills/caveman.claude/skills/caveman
- DevBetterCom/DevBetterWeb.agents/skills/caveman
- smontlouis/bible-strong.agents/skills/caveman
- alex-on-ai/WebReaper.agents/skills/caveman
- synnaxlabs/synnax.claude/skills/caveman
- victorgarciaesgi/regle.cursor/skills/caveman
- InditexTech/weavejs.agents/skills/caveman
- letehaha/moneymatter.claude/skills/caveman
- stevesolun/ctximported-skills/mattpocock/caveman
- appleweiping/WEIPING_WIKI.claude/skills/mattpocock-skills/skills/productivity/caveman
- aurorasoft2/Matt_Pocock_Skillsskills/productivity/caveman
- alirezarezvani/claude-skillsengineering/caveman/skills/caveman
- aiskillstore/marketplaceskills/mattpocock/caveman
Compare with similar skills
Caveman 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 this skillTh4nat0s/Chall_Tools | 108 | 13 repos | ~533 | Automated safety check: Pass | None | |
| Compressionthedaviddias/Front-End-Checklist | 74k | — | ~421 | Automated safety check: Pass | MIT | |
| Caveman ModeJuliusBrussee/caveman | 110k | — | ~1.2k | Automated safety check: Pass | Apache-2.0 | |
| OmniRoute Prompt Compressiondiegosouzapw/OmniRoute | 74k | — | ~1.6k | Automated safety check: Pass | MIT | |
| Caveman Compressvishiri/fantasia-archive | 409 | 9 repos | ~1.1k | Automated safety check: Notes | GPL-3.0 | |
| Cavemanhashgraph-online/awesome-codex-plugins | 1.2k | — | ~1.3k | Automated safety check: Pass | Apache-2.0 |
Similar skills
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.
OmniRoute Prompt Compression
diegosouzapw/OmniRoute
Configures OmniRoute's RTK, Caveman and stacked compression modes, manages language packs and rules, and previews token savings of 60 to 90 percent.
Caveman Compress
vishiri/fantasia-archive
Compress natural language memory files (CLAUDE.md, todos, preferences) into caveman format to save input tokens.
Caveman
hashgraph-online/awesome-codex-plugins
Ultra-compressed communication mode. An agent skill from hashgraph-online/awesome-codex-plugins.
How To Communicate
databasus/databasus
Communicate clearly in every response, progress update and agent-authored document.
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Questions about Caveman
What does Caveman do?
Ultra-compressed communication mode. An agent skill from Th4nat0s/Chall_Tools. Caveman is an agent skill from Th4nat0s/Chall_Tools. Ultra-compressed communication mode.
When should I use Caveman?
Caveman fits situations like: user says caveman mode; talk like caveman; invokes /caveman.
How do I install Caveman in Claude Code?
Run `npx skills add Th4nat0s/Chall_Tools --skill caveman -a claude-code`. Or copy the skill folder (skills/caveman in Th4nat0s/Chall_Tools) into .claude/skills/caveman in your project. Claude Code loads it when a task matches its description.
How do I install Caveman in Codex?
Run `npx skills add Th4nat0s/Chall_Tools --skill caveman -a codex`. Or copy the skill folder (skills/caveman in Th4nat0s/Chall_Tools) into .agents/skills/caveman in your project. Codex loads it when a task matches its description.
Can I use Caveman 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 Th4nat0s/Chall_Tools --skill caveman -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, .gemini/skills/caveman, .github/skills/caveman and .opencode/skills/caveman in your project.
What does Caveman need to run?
SKILL.md names no scripts, command-line tools or credentials: Caveman is instructions for the agent only.
Does Caveman access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Caveman 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 use?
No licence was found for Caveman or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Caveman use?
About 533 tokens (SKILL.md is roughly 2.1k 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?
Skills that share tags, products or a category with Caveman: Compression (thedaviddias/Front-End-Checklist, 74k stars), Caveman Mode (JuliusBrussee/caveman, 110k stars), OmniRoute Prompt Compression (diegosouzapw/OmniRoute, 74k stars) and Caveman Compress (vishiri/fantasia-archive, 409 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Caveman?
Th4nat0s (a GitHub user) maintains it in Th4nat0s/Chall_Tools, which has 108 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on September 16, 2026.
Source: Th4nat0s/Chall_Tools on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.