jeremylongshore Skill Discovery & Pre-Install Check
Combined entry point for finding skills on GitHub and for evaluating a specific skill (URL or local path) before installing it.
Overview
Replaces the v1.2 split between /janitor-search and /janitor-precheck. The dispatcher picks the right mode from the argument shape. Search results are relevance-gated (a repo must carry a skill signal in its name/description/topics) and ranked by relevance before stars, so generic mega-repos don't crowd out actual skills.
| Argument | Mode | What runs |
|---|---|---|
Keyword(s) like seo or n8n workflows |
Discovery | search.sh — find matching skills on GitHub |
--compare <skill-name> |
Comparison | search.sh --compare — find alternatives to a local skill |
Full URL: https://github.com/user/skill |
Pre-install check | precheck.sh — analyze before installing |
Short repo: user/skill |
Pre-install check | precheck.sh (auto-expanded to URL) |
Local path: ~/path/to/skill |
Pre-install check | precheck.sh (local folder) |
Prerequisites
- Claude Code with the skills-janitor plugin installed (provides
scripts/discover.sh,search.sh,precheck.sh,compare.sh) - bash 3.2+ and
curl - Network access to
api.github.com(anonymous OK; setGITHUB_TOKENfor higher rate limits and code search)
Instructions
Step 1: Dispatch on argument shape
bash ~/.claude/skills/skills-janitor/scripts/discover.sh <query-or-url> [options]
Examples:
discover.sh seo— search for SEO-related skillsdiscover.sh n8n --limit 20— top 20 n8n skillsdiscover.sh --compare marketing-seo-audit— alternatives to a local skilldiscover.sh https://github.com/user/my-skill— check before installingdiscover.sh user/my-skill— same, short form
Step 2: Present results per mode
Discovery mode — ranked list of GitHub repos with skill name, description, stars, last updated, and a one-line verdict.
Pre-install mode — overlap analysis: which of the user's existing skills (including plugin skills) overlap with the candidate by description, and a recommendation to install / skip / replace.
Output
Discovery: a numbered table (repository, stars, updated, INSTALLED/AVAILABLE status). Pre-install: overlap buckets (HIGH ≥60%, MODERATE 30–59%, LOW <30%) with shared keywords and a final verdict line (HIGH_OVERLAP / MODERATE_OVERLAP / SAFE).
Error Handling
Error:
GitHub API rate limit exceededSolution: Set theGITHUB_TOKENenvironment variable (any classic token, no scopes needed) and re-run; anonymous search allows only a few requests per minute.Error:
Could not fetch SKILL.md from <url>Solution: The repo keeps its SKILL.md at a non-standard path — pass a direct URL to the SKILL.md file, or a local clone path instead.Error: No results for a valid topic Solution: The relevance gate drops repos without any skill signal. Broaden the keyword (e.g.
n8n skill→n8n) or check the cached results note — results are cached for 24h indata/search-cache.json.
Examples
Example 1: Find skills by topic
Input: "Find me an n8n skill."
Output: Run discover.sh n8n, present the ranked table, and flag any result already installed.
Example 2: Check before installing
Input: "Is github.com/user/seo-helper worth installing?"
Output: Run discover.sh https://github.com/user/seo-helper, then summarize: overlap with existing skills, the verdict (e.g. "MODERATE_OVERLAP — 45% with marketing-skills:seo-audit"), and a recommendation.
Resources
- Dispatcher (plugin-relative):
{baseDir}/../../scripts/discover.sh - Search cache:
data/search-cache.json(24h TTL) /janitor-report— health check of currently installed skills/janitor-value— are existing skills earning their context cost/janitor-fix— fix issues with installed skills
Source: jeremylongshore/claude-code-plugins-plus-skills → plugins/community/skills-janitor/skills/janitor-discover/SKILL.md