Hayden Bleasel, an expert developer from OpenAI, released Blume, an open-source documentation framework that shipped to npm as version 1.0.3 the same day. Blume is a command-line tool paired with a component library for docs that reads a folder of Markdown or MDX files and produces a production-grade documentation site with navigation, search, theming, and Open Graph images, with configuration optional and added one file at a time. The code is a TypeScript monorepo; the published package sits at packages/blume. It requires Node.js 22.12 or newer and runs with Bun, pnpm, npm, or yarn. Under the surface, Blume generates and drives a hidden Astro project, and the core theme ships no client framework JavaScript. Setup takes a single command: npx blume init. The CLI covers commands including blume dev, blume build, blume eject, blume validate, and blume doctor. Beyond human readers, Blume targets agents: every page returns raw Markdown when you append .md to its URL, a single flag emits llms.txt and llms-full.txt for agents, and each page can be copied as Markdown or opened in ChatGPT, Claude, or v0.