Show HN: Skillz – Use Claude Skills Anywhere (github.com)

Skillz is a new open-source CLI that makes "skills" (reusable instruction sets for Claude-style assistants) discoverable and usable across any LLM-powered tooling in seconds. It works by auto-detecting your project environment, injecting a managed "Skills" section into existing instruction files (AGENTS.md, CLAUDE.md, Cursor rules, Aider conventions, etc.), and syncing SKILL.md files from configured directories (default: .claude/skills). The result: a single, versionable place for capabilities, examples, guidelines and anti-patterns that agents and developer tools can reference, improving discoverability, reuse and consistent behavior across different LLM setups. Technically, Skillz is a Node.js 18+ CLI (npm install -g skillz) with key commands: init (auto-detects presets or accepts flags), sync (scans skill directories and updates targets; supports --dry-run, --only, templates and embedding full bodies), create (interactive or quick SKILL.md generation), list and edit (opens configured editor and can auto-run sync). Configuration lives in skillz.json (targets, skillDirectories, additionalSkills, ignore, defaultEditor, autoSyncAfterEdit). It normalizes names, preserves frontmatter, supports global skill paths, Handlebars templates, and CI-friendly flags. For the AI/ML community this standardizes skill packaging and distribution, streamlines agent composition and governance, and makes sharing best-practice instruction sets across diverse model tooling much easier.