I think AI coding assistants need an "npm" for reusable skills. I'm building one.

I've been using multiple AI coding assistants (Claude Code, Cursor, Codex, Copilot, Gemini CLI, Windsurf, etc.) over the past few months, and I noticed the same problem everywhere. Every assistant has its own way of defining skills, rules, or prompts. Claude Code → Skills Cursor → Rules GitHub Copilot → Instructions Codex → AGENTS.md Windsurf → Workflows Others → Yet another format If I build a useful skill for one assistant, I have to rewrite and maintain it separately for every other assistant. That feels a lot like JavaScript before npm or containers before Docker. So I started building Kitbash. It's not another AI coding assistant. The goal is to create an open standard for portable AI skills. Some ideas I'm exploring: 📦 Write a skill once and compile it for multiple AI coding assistants. 🔒 Versioned installs with lockfiles instead of copying prompt files. 🧪 Testable skills with evaluation suites. 🔐 Permission manifests and context budgets. 🔄