Install the "caveman" agent skill from https://github.com/ProgrammerAnthony/Expert-Coding-Harness/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.
Type 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.
skills CLI
$ npx skills add ProgrammerAnthony/Expert-Coding-Harness --skill caveman -a codex
Project install goes to .agents/skills/; add -g for ~/.codex/skills/.
Install the "caveman" agent skill from https://github.com/ProgrammerAnthony/Expert-Coding-Harness/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.
skills CLI
$ npx skills add ProgrammerAnthony/Expert-Coding-Harness --skill caveman -a cursor
Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.
Install the "caveman" agent skill from https://github.com/ProgrammerAnthony/Expert-Coding-Harness/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.
--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
skills CLI
$ npx skills add ProgrammerAnthony/Expert-Coding-Harness --skill caveman -a gemini-cli
Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.
Install the "caveman" agent skill from https://github.com/ProgrammerAnthony/Expert-Coding-Harness/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.
Installs 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).
skills CLI
$ npx skills add ProgrammerAnthony/Expert-Coding-Harness --skill caveman -a github-copilot
Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.
Install the "caveman" agent skill from https://github.com/ProgrammerAnthony/Expert-Coding-Harness/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.
skills CLI
$ npx skills add ProgrammerAnthony/Expert-Coding-Harness --skill caveman -a opencode
OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
Install the "caveman" agent skill from https://github.com/ProgrammerAnthony/Expert-Coding-Harness/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
235
Token cost
~217 tokens
SKILL.md length
45 words
Files
1
Skills in repo
23
Repo updated
First seen
Licence
MIT
At a glance
超压缩通信模式。通过去掉废话、冠词和客套语，在保持完整技术准确性的同时削减约 75% token 用量. An agent skill from ProgrammerAnthony/Expert-Coding-Harness.
SKILL.md covers 持久性, 规则 and 自动清晰例外
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Caveman is an agent skill from ProgrammerAnthony/Expert-Coding-Harness. 超压缩通信模式。通过去掉废话、冠词和客套语，在保持完整技术准确性的同时削减约 75% token 用量。 当用户说"caveman 模式"、"简洁模式"、"少废话"、"省 token"、"简短点"或调用 /caveman 时触发。
Its SKILL.md is about 220 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: 生产级 AI Agent 技能集，辅助AI Harness应用于企业开发，覆盖代码审查、代码安全审计、TDD、需求工程、实施计划与子代理编排、架构设计、调试、前端开发与技能创建全流程。 The licence is MIT.
Example prompts
“caveman 模式”
“省 token”
“/caveman”
What it can do on your machine
Read from SKILL.md and the folder at commit ab0b827. 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 217 tokens when it runs. Until then it costs about 31 tokens; SKILL.md has 45 words of instructions outside code blocks.
Always· name and description, kept in context so the agent knows when to use it
~31
When it runs· the whole SKILL.md, loaded when a task matches
~217
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.
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.
Caveman compared with similar skills
Skill
Stars
Used in
Tokens
Auto-check
Licence
Repo updated
Caveman this skillProgrammerAnthony/Expert-Coding-Harness
Turns a Caveman report-only optimization observation into one minimal code change and a paired baseline evaluation, after the operator picks which to pursue.
Acts on a Caveman learn report: reviews ranked token sinks, applies cost-lowering edits one at a time with your consent, and reports what each fix returned.
A skill your agent uses when 用户需要设计新系统架构、评审或优化已有系统架构、选择技术方案时。触发场景：架构分析、架构设计、系统设计、architecture、架构优化、系统架构、架构评审、架构咨询、技术方案、技术设计、如何组织代码结构、模块划分、服务拆分、数据库选型、微服务设计。
A skill your agent uses when 用户需要对代码进行安全审计、发现安全漏洞、上线前安全评估、检查代码是否存在安全风险时。触发场景：代码安全审计、安全审计、白盒审计、安全扫描、漏洞检测、漏洞挖掘、SQL注入、命令注入、XSS、SSRF、反序列化、认证绕过、越权、代码安全检查、security audit、code…
A skill your agent uses when 用户需要审查前端代码（React/Vue/Next.js/TypeScript/Tailwind等）、检查代码质量、性能问题、可维护性、安全漏洞、最佳实践落地时。触发场景：前端代码评审、前端代码优化、React/Vue代码检查、TypeScript代码审查、前端性能优化、前端安全审计、前端代码规范检查。
A skill your agent uses when 用户需要优化前端性能、提升页面加载速度、减少白屏时间、优化交互流畅度、进行性能排查时。触发场景：前端性能优化、页面加载慢、白屏时间长、卡顿、LCP/FID/CLS指标优化、前端性能分析、打包体积优化。
235 GitHub stars~701 tokensUpdated 4 mo ago
Auto-check passed
Questions about Caveman
What does Caveman do?
超压缩通信模式。通过去掉废话、冠词和客套语，在保持完整技术准确性的同时削减约 75% token 用量. An agent skill from ProgrammerAnthony/Expert-Coding-Harness. Caveman is an agent skill from ProgrammerAnthony/Expert-Coding-Harness.
How do I install Caveman in Claude Code?
Run `npx skills add ProgrammerAnthony/Expert-Coding-Harness --skill caveman -a claude-code`. Or copy the skill folder (skills/caveman in ProgrammerAnthony/Expert-Coding-Harness) 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 ProgrammerAnthony/Expert-Coding-Harness --skill caveman -a codex`. Or copy the skill folder (skills/caveman in ProgrammerAnthony/Expert-Coding-Harness) 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 ProgrammerAnthony/Expert-Coding-Harness --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?
Caveman is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Caveman use?
About 217 tokens (SKILL.md is roughly 868 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: Caveman Mode (JuliusBrussee/caveman, 110k stars), Caveman Experiment Manager (JuliusBrussee/caveman, 110k stars), Caveman Optimization Evaluator (JuliusBrussee/caveman, 110k stars) and Caveman Gateway Setup (JuliusBrussee/caveman, 110k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Caveman?
ProgrammerAnthony (a GitHub user) maintains it in ProgrammerAnthony/Expert-Coding-Harness, which has 235 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on May 11, 2026.
