Paste any course, article, or notes. Get a Skill Pack: a curriculum that teaches you, a SKILL.md agents can execute, a glossary, and a concept graph. Runs entirely in your browser — source on GitHub.
Your key is used only for direct browser → provider requests. This is a static page — there is no server, and the key never leaves your machine otherwise. Prefer a spend-capped key. Or tick Demo mode below and try the mechanics with no key at all.