Summary
This is a comprehensive reference collection for the UnJS ecosystem, covering 40+ agnostic JavaScript libraries like h3, nitro, ofetch, and unstorage. You'll want this when building universal apps that need to run across Node.js, Deno, Bun, edge runtimes, and browsers without wrestling with environment-specific APIs. The skill documents everything from HTTP frameworks and build tools to utilities for paths, URLs, configuration loading, and WebSocket handling. It's generated directly from the UnJS website as of January 2026, so the references are current. Most useful if you're already committed to the UnJS approach or building framework-agnostic tooling, since it assumes you want that level of portability rather than making the case for it.
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npx -y skills add hairyf/skills --skill unjs --agent claude-codeInstalls into .claude/skills of the current project.
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Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →An agent that runs the SEO playbooks that move rankings and ships PRs you control.
Get founding access →Connect Claude to +800M contacts, +150M companies. Find & Enrich leads in chat.
Try For Free →First SeenJun 3, 2026
