Darwin Skill Optimizer
alchaincyf/darwin-skill
Scores SKILL.md files on a nine-dimension rubric, then improves them in a keep-or-revert loop with independent judge agents, test prompts, git history and human checkpoints.
审查和优化已有 Skill。用于检查技能质量、触发边界、冗余指令或重构技能说明；不用于执行该技能的业务任务. An agent skill from chujianyun/skills.
Install Skill Optimizer
$ npx skills add chujianyun/skills --skill skill-optimizer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install chujianyun/skills skill-optimizer --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/chujianyun/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/skill-optimizer .claude/skills/skill-optimizer && 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 "skill-optimizer" agent skill from https://github.com/chujianyun/skills/tree/main/skills/skill-optimizer into .claude/skills/skill-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-optimizer", 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/chujianyun/skills/tree/main/skills/skill-optimizerType 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 chujianyun/skills --skill skill-optimizer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install chujianyun/skills skill-optimizer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/chujianyun/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/skill-optimizer .agents/skills/skill-optimizer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "skill-optimizer" agent skill from https://github.com/chujianyun/skills/tree/main/skills/skill-optimizer into .agents/skills/skill-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-optimizer", 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 chujianyun/skills --skill skill-optimizer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install chujianyun/skills skill-optimizer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/chujianyun/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/skill-optimizer .cursor/skills/skill-optimizer && 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 "skill-optimizer" agent skill from https://github.com/chujianyun/skills/tree/main/skills/skill-optimizer into .cursor/skills/skill-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-optimizer", 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/chujianyun/skills.git --path skills/skill-optimizer--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 chujianyun/skills --skill skill-optimizer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install chujianyun/skills skill-optimizer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/chujianyun/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/skill-optimizer .gemini/skills/skill-optimizer && 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 "skill-optimizer" agent skill from https://github.com/chujianyun/skills/tree/main/skills/skill-optimizer into .gemini/skills/skill-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-optimizer", 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 chujianyun/skills skill-optimizerInstalls 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 chujianyun/skills --skill skill-optimizer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/chujianyun/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/skill-optimizer .github/skills/skill-optimizer && 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 "skill-optimizer" agent skill from https://github.com/chujianyun/skills/tree/main/skills/skill-optimizer into .github/skills/skill-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-optimizer", 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 chujianyun/skills --skill skill-optimizer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install chujianyun/skills skill-optimizer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/chujianyun/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/skill-optimizer .opencode/skills/skill-optimizer && 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 "skill-optimizer" agent skill from https://github.com/chujianyun/skills/tree/main/skills/skill-optimizer into .opencode/skills/skill-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-optimizer", 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
skill-optimizer- GitHub stars
- 740
- Token cost
- ~554 tokens
- SKILL.md length
- 62 words
- Files
- 5 (incl. references)
- Skills in repo
- 35
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
审查和优化已有 Skill。用于检查技能质量、触发边界、冗余指令或重构技能说明；不用于执行该技能的业务任务. An agent skill from chujianyun/skills.
- Works in 5 steps: 确定范围 → 审查并选择资料 → 给出诊断与方案 → …
- Tasks that involve Skill management
- SKILL.md covers 授权与边界, 工作流 and 输出契约
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Skill Optimizer is an agent skill from chujianyun/skills. 审查和优化已有 Skill。用于检查技能质量、触发边界、冗余指令或重构技能说明；不用于执行该技能的业务任务。
Its SKILL.md is about 550 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `README.md`, `references/review-checklist.md` and `references/skill-creation-best-practices-claude-api-docs.md`).
It sits in Agent Workflows, covering Skill management. The repository describes itself as: WuMing's Claude Skills.
When your agent uses it
- Tasks that involve Skill management
Example prompts
- “/skill-optimizer”
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- 确定范围
- 审查并选择资料
- 给出诊断与方案
- 实施
- 验证与收尾
What it can do on your machine
Read from SKILL.md and the folder at commit 62e7c89. 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
Skill Optimizer loads about 554 tokens when it runs, and up to ~10k if it reads all its reference files. Until then it costs about 18 tokens; SKILL.md has 62 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 62 words (~554 tokens).
- name
- skill-optimizer
Files
SKILL.md and 4 other files (references) in skills/skill-optimizer of chujianyun/skills.
- SKILL.md
- README.md
- references/review-checklist.md
- references/skill-creation-best-practices-claude-api-docs.md
- references/skill-design-review-framework.md
Open the folder on GitHubat commit 62e7c89
Compare with similar skills
Skill Optimizer 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 |
|---|---|---|---|---|---|---|
| Skill Optimizer this skillchujianyun/skills | 740 | — | ~554 | Automated safety check: Pass | Custom licence | |
| Darwin Skill Optimizeralchaincyf/darwin-skill | 6.2k | 1 repos | ~4.7k | Automated safety check: Pass | MIT | |
| Using Agent Skillsaddyosmani/agent-skills | 103k | 4 repos | ~2.4k | Automated safety check: Pass | MIT | |
| Ponytail Help CardDietrichGebert/ponytail | 158k | — | ~728 | Automated safety check: Pass | MIT | |
| Skill Creatorzhayujie/CowAgent | 47k | — | ~4.7k | Automated safety check: Notes | MIT | |
| Task Observerrebelytics/one-skill-to-rule-them-all | 3.2k | 1 repos | ~12k | Automated safety check: Pass | CC-BY-4.0 |
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Using Agent Skills
addyosmani/agent-skills
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rebelytics/one-skill-to-rule-them-all
Monitors task execution for skill improvement opportunities.
Open-Science Skill Creator
aipoch/open-science
Creates, revises, evaluates and publishes skills in the Open-Science app through its native host.skills composer, with optional test prompts and benchmarks.
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Questions about Skill Optimizer
What does Skill Optimizer do?
审查和优化已有 Skill。用于检查技能质量、触发边界、冗余指令或重构技能说明；不用于执行该技能的业务任务. An agent skill from chujianyun/skills. Skill Optimizer is an agent skill from chujianyun/skills.
When should I use Skill Optimizer?
Skill Optimizer fits situations like: tasks that involve Skill management.
How do I install Skill Optimizer in Claude Code?
Run `npx skills add chujianyun/skills --skill skill-optimizer -a claude-code`. Or copy the skill folder (skills/skill-optimizer in chujianyun/skills) into .claude/skills/skill-optimizer in your project. Claude Code loads it when a task matches its description.
How do I install Skill Optimizer in Codex?
Run `npx skills add chujianyun/skills --skill skill-optimizer -a codex`. Or copy the skill folder (skills/skill-optimizer in chujianyun/skills) into .agents/skills/skill-optimizer in your project. Codex loads it when a task matches its description.
Can I use Skill Optimizer 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 chujianyun/skills --skill skill-optimizer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-optimizer, .gemini/skills/skill-optimizer, .github/skills/skill-optimizer and .opencode/skills/skill-optimizer in your project.
What does Skill Optimizer need to run?
SKILL.md names no scripts, command-line tools or credentials: Skill Optimizer is instructions for the agent only.
Does Skill Optimizer 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 Skill Optimizer 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 Skill Optimizer use?
Skill Optimizer has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Skill Optimizer use?
About 554 tokens (SKILL.md is roughly 2.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 9.4k tokens, read only when the agent opens those files.
What are the alternatives to Skill Optimizer?
Skills that share tags, products or a category with Skill Optimizer: Darwin Skill Optimizer (alchaincyf/darwin-skill, 6.2k stars), Using Agent Skills (addyosmani/agent-skills, 103k stars), Ponytail Help Card (DietrichGebert/ponytail, 158k stars) and Skill Creator (zhayujie/CowAgent, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Skill Optimizer?
chujianyun (a GitHub user) maintains it in chujianyun/skills, which has 740 GitHub stars. The repository holds 35 skills in this directory. The repository was last updated on September 25, 2026.
Source: chujianyun/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.