skill-install-or-create

name	skill-install-or-create
description	Install third-party Codex or Claude-style skills from GitHub, npm/npx commands, local folders, or user-provided skill descriptions; when the source cannot be recognized, is too slow, has no valid SKILL.md, or the named skill is missing, synthesize a valid local Codex skill from README, docs, repository structure, or the user's description. Use when the user asks to install, add, clone, import, convert, create, or learn a skill from an external source.
disable	true

Skill Install Or Create

Use this workflow to avoid wasting time on slow or non-standard skill repositories. Prefer a working install when it is fast and reliable; otherwise create a local Codex skill that captures the useful behavior.

Decision Flow

1. Identify the requested skill.

   • Extract repository URL, install command, skill name, branch, and target agent if provided.
   • If the request contains only a repository URL, inspect metadata and top-level files first.
   • If the user gives a desired behavior but no repo, create a local skill directly.

2. Try the official install path briefly.

   • Use the user's command when it is explicit, such as npx skills add ... --skill ....
   • Stop if clone/download stalls, repeatedly times out, reports "No skills found", or cannot find the named skill.
   • Do not keep retrying whole-repository clones after the same network or structure failure.

3. Inspect the source without full clone.

   • Prefer GitHub API, README, package metadata, docs, and exact SKILL.md paths.
   • Search for the requested skill name and likely aliases.
   • If an exact standard skill directory is found, install just that directory.

4. Create a local skill when install is not clearly better.

   • Base it on the source's README, docs, examples, prompt text, directory names, and the user's stated intent.
   • Place it in /Users/hanyueyang/.codex/skills/<skill-name> unless the user asks for another location.
   • Use skill-creator conventions: required SKILL.md, optional agents/openai.yaml, and only useful references/scripts/assets.

5. Validate and report.

   • Run the skill validator.
   • Verify SKILL.md exists.
   • Tell the user what was installed or synthesized, where it lives, and whether Codex should be restarted.

Time Budget

Use these default cutoffs unless the user asks to keep trying:

• npx skills add clone animation with no progress: stop after about 15-25 seconds.
• Git clone disconnect or timeout: do not retry more than once.
• Large zip downloads: avoid unless exact directory download is unavailable and the repo is small.
• Missing named skill after API/path search: create a local skill from available descriptions.

Skill Synthesis Rules

When creating a replacement skill:

• Preserve the user's requested skill name when valid; normalize to lowercase hyphen-case.
• Write a broad but accurate description that includes trigger phrases.
• Put core workflow in SKILL.md.
• Put detailed checklists, matrices, examples, or standards in references/.
• Add scripts only when deterministic automation is genuinely useful.
• Do not claim the synthesized skill is the original upstream skill.
• Say clearly that it was generated locally from available descriptions.

Source Inspection Checklist

Look for:

• SKILL.md files.
• README.md, docs, examples, prompts, agent files, command files, or templates.
• Package manifests mentioning skill paths.
• .claude/skills, .codex/skills, skills/, agents/, commands/, templates/, or domain folders.
• Existing install docs that name exact directories.

Report Template

Use a short report:

Done. I [installed/synthesized] <skill-name>.

Path: <absolute path>
Validation: <result>
Note: <anything important, such as "upstream install was not usable because ...">

Restart Codex to load it.