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.
Authors Agent Skills v1.0 packages (SKILL.md plus references/scripts), runs packageskill to produce a standards-compliant zip, and uses installskill to add skills from HTTPS, registry, workspace, or…
Install Skill Packager
$ npx skills add vixues/LeAgent --skill skill-packager -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install vixues/LeAgent skill-packager --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/vixues/LeAgent.git skills-src && mkdir -p .claude/skills && cp -r skills-src/backend/leagent/skills/builtin/skill-packager .claude/skills/skill-packager && 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-packager" agent skill from https://github.com/vixues/LeAgent/tree/main/backend/leagent/skills/builtin/skill-packager into .claude/skills/skill-packager/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-packager", 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/vixues/LeAgent/tree/main/backend/leagent/skills/builtin/skill-packagerType 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 vixues/LeAgent --skill skill-packager -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install vixues/LeAgent skill-packager --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vixues/LeAgent.git skills-src && mkdir -p .agents/skills && cp -r skills-src/backend/leagent/skills/builtin/skill-packager .agents/skills/skill-packager && 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-packager" agent skill from https://github.com/vixues/LeAgent/tree/main/backend/leagent/skills/builtin/skill-packager into .agents/skills/skill-packager/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-packager", 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 vixues/LeAgent --skill skill-packager -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install vixues/LeAgent skill-packager --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vixues/LeAgent.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/backend/leagent/skills/builtin/skill-packager .cursor/skills/skill-packager && 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-packager" agent skill from https://github.com/vixues/LeAgent/tree/main/backend/leagent/skills/builtin/skill-packager into .cursor/skills/skill-packager/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-packager", 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/vixues/LeAgent.git --path backend/leagent/skills/builtin/skill-packager--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 vixues/LeAgent --skill skill-packager -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install vixues/LeAgent skill-packager --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vixues/LeAgent.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/backend/leagent/skills/builtin/skill-packager .gemini/skills/skill-packager && 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-packager" agent skill from https://github.com/vixues/LeAgent/tree/main/backend/leagent/skills/builtin/skill-packager into .gemini/skills/skill-packager/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-packager", 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 vixues/LeAgent skill-packagerInstalls 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 vixues/LeAgent --skill skill-packager -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/vixues/LeAgent.git skills-src && mkdir -p .github/skills && cp -r skills-src/backend/leagent/skills/builtin/skill-packager .github/skills/skill-packager && 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-packager" agent skill from https://github.com/vixues/LeAgent/tree/main/backend/leagent/skills/builtin/skill-packager into .github/skills/skill-packager/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-packager", 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 vixues/LeAgent --skill skill-packager -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install vixues/LeAgent skill-packager --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vixues/LeAgent.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/backend/leagent/skills/builtin/skill-packager .opencode/skills/skill-packager && 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-packager" agent skill from https://github.com/vixues/LeAgent/tree/main/backend/leagent/skills/builtin/skill-packager into .opencode/skills/skill-packager/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-packager", 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-packager- GitHub stars
- 232
- Token cost
- ~656 tokens
- SKILL.md length
- 247 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Authors Agent Skills v1.0 packages (SKILL.md plus references/scripts), runs packageskill to produce a standards-compliant zip, and uses installskill to add skills from HTTPS, registry, workspace, or…
- The user wants to turn documentation
- SKILL.md covers When to use, Authoring layout, Tools (LeAgent) and Cursor / desktop import (manual), plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Code into a portable skill
What it does
Skill Packager is an agent skill from vixues/LeAgent. Authors Agent Skills v1.0 packages (SKILL.md plus references/scripts), runs packageskill to produce a standards-compliant zip, and uses installskill to add skills from HTTPS, registry, workspace, or an uploaded archive. Use when the user wants to turn documentation, workflows, or code into a portable skill, export a skill zip, or install a skill from a link or file without leaving the chat.
Its SKILL.md is about 660 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Agent Workflows, covering Skill management. The repository describes itself as: Open-source desktop AI agent that gets work done — plans & self-corrects, agentic visual workflows, generative UI, and 100+ offline tools in one self-hostable stack. The licence is Apache-2.0.
When your agent uses it
- The user wants to turn documentation
- Code into a portable skill
- Export a skill zip
- Install a skill from a link
Example prompts
- “Use the skill-packager skill to author Agent Skills v1.0 packages (SKILL.md plus references/scripts), runs packageskill to produce a…”
- “/skill-packager”
What it can do on your machine
Read from SKILL.md and the folder at commit 1f16bad. 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
Links to these hosts (documentation or services it may open):
agentskills.my
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 Packager loads about 656 tokens when it runs. Until then it costs about 103 tokens; SKILL.md has 247 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 vixues/LeAgent at commit 1f16bad, republished under its Apache-2.0 licence (© vixues). 247 words, ~656 tokens.
Download SKILL.mdSave it as
.claude/skills/skill-packager/SKILL.md (or your agent's skills folder).- name
- skill-packager
- description
- Authors Agent Skills v1.0 packages (SKILL.md plus references/scripts), runs package_skill to produce a standards-compliant zip, and uses install_skill to add skills from HTTPS, registry, workspace, or an uploaded archive. Use when the user wants to turn documentation, workflows, or code into a portable skill, export a skill zip, or install a skill from a link or file without leaving the chat.
- license
- Apache-2.0
- metadata.version
- 1.0.0
- metadata.category
- platform
- metadata.tags
- skills, skill, zip, pack, install, export, cursor, agentskills
Skill packager
Help the user create, package, and install Agent Skills v1.0 bundles.
When to use
- User finished a doc, workflow, or code and wants it reusable as a skill.
- User pastes an https:// link to a
.zip/.tar.gzskill bundle to install. - User wants a .zip to import into Cursor (
~/.cursor/skills/or.cursor/skills/) or another agent.
Authoring layout
- One directory per skill: directory name must equal the
namefield inSKILL.mdfrontmatter (kebab-case). - Put long prose in
references/orassets/; keepSKILL.mdconcise with links to those files. - Optional
scripts/for helpers; script execution may require server env flags—document that.
Tools (LeAgent)
| Goal | Tool |
|---|---|
| Validate + zip a folder | package_skill with skill_directory (optional output_path) |
| Install from URL | install_skill with source_type: url, url, optional sha256 |
| Install from registry | install_skill with source_type: registry, registry_skill_name |
| Install from project folder | install_skill with source_type: workspace, workspace_path, target_skill_name |
| Install from uploaded archive | install_skill with source_type: uploaded_archive, file_id |
After installation, use load_skill with the returned skill name to pull instructions.
Cursor / desktop import (manual)
If the user only needs Cursor (not LeAgent runtime): give them the zip from package_skill and instruct them to extract so one top-level folder skill-name/ contains SKILL.md, then copy that folder into %USERPROFILE%\.cursor\skills\ or the project’s .cursor/skills/. Do **not** place skills in ~/.cursor/skills-cursor/ (reserved for built-ins).
Quality checklist
-
descriptionin frontmatter states what the skill does and when to use it (third person). - Directory name matches
nameinSKILL.md. - Run
package_skillbefore sharing the zip; fix validation errors if any.
© vixues, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in backend/leagent/skills/builtin/skill-packager of vixues/LeAgent.
Open the folder on GitHubat commit 1f16bad
Compare with similar skills
Skill Packager 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 Packager this skillvixues/LeAgent | 232 | — | ~656 | Automated safety check: Pass | Apache-2.0 | |
| 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 |
Similar skills
Using Agent Skills
addyosmani/agent-skills
Meta-skill for choosing which workflow skill fits the task at hand, plus always-on habits: surface assumptions, stop on confusion, push back, keep it simple and stay in scope.
Ponytail Help Card
DietrichGebert/ponytail
Shows a one-shot quick-reference card for the ponytail skills: intensity levels, the six commands, and how to turn it off, set a default mode and update.
Skill Creator
zhayujie/CowAgent
Guides creating, installing and updating agent skills in a workspace: SKILL.md frontmatter, bundled scripts and references, with scripts to scaffold, validate and package.
Task Observer
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.
More from vixues/LeAgent
Document Processor
vixues/LeAgent
Guidance for processing documents, extracting content, and transforming structured information.
Data Analyzer
vixues/LeAgent
Guidance for analyzing structured data, generating statistics and producing data-driven insights.
Workflow Helper
vixues/LeAgent
Guidance for creating, managing and executing workflow automations that chain multiple tools and agents together.
Attendance Signin Sheet
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Generate printable attendance / 签到表 spreadsheets from name lists.
Procurement Audit
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Review procurement contracts and purchase packages against uploaded compliance rules (招标/采购制度).
Travel Expense Audit
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Audit travel / 差旅报销 claims against uploaded policy handbooks and rate tables (lodging caps, transport, per diem).
Related
Categories
Questions about Skill Packager
What does Skill Packager do?
Authors Agent Skills v1.0 packages (SKILL.md plus references/scripts), runs packageskill to produce a standards-compliant zip, and uses installskill to add skills from HTTPS, registry, workspace, or…. Skill Packager is an agent skill from vixues/LeAgent.md plus references/scripts), runs packageskill to produce a standards-compliant zip, and uses installskill to add skills from HTTPS, registry, workspace, or an uploaded archive.
When should I use Skill Packager?
Skill Packager fits situations like: the user wants to turn documentation; code into a portable skill; export a skill zip; install a skill from a link.
How do I install Skill Packager in Claude Code?
Run `npx skills add vixues/LeAgent --skill skill-packager -a claude-code`. Or copy the skill folder (backend/leagent/skills/builtin/skill-packager in vixues/LeAgent) into .claude/skills/skill-packager in your project. Claude Code loads it when a task matches its description.
How do I install Skill Packager in Codex?
Run `npx skills add vixues/LeAgent --skill skill-packager -a codex`. Or copy the skill folder (backend/leagent/skills/builtin/skill-packager in vixues/LeAgent) into .agents/skills/skill-packager in your project. Codex loads it when a task matches its description.
Can I use Skill Packager 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 vixues/LeAgent --skill skill-packager -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-packager, .gemini/skills/skill-packager, .github/skills/skill-packager and .opencode/skills/skill-packager in your project.
What does Skill Packager need to run?
SKILL.md names no scripts, command-line tools or credentials: Skill Packager is instructions for the agent only.
Does Skill Packager access the network?
SKILL.md names 1 domain. As links in the text: agentskills.my. This is read from the text; nothing was executed.
Is Skill Packager 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 Packager use?
Skill Packager is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Skill Packager use?
About 656 tokens (SKILL.md is roughly 2.6k 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 Skill Packager?
Skills that share tags, products or a category with Skill Packager: 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 Packager?
vixues (a GitHub user) maintains it in vixues/LeAgent, which has 232 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on August 11, 2026.
Source: vixues/LeAgent on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.