Blume

Blume is an open-source, markdown-first documentation framework built on Astro and Vite. Drop Markdown or MDX into a folder, run blume dev, and get a production-grade docs site — navigation, search, theming, Open Graph images, and a rich component library — with no app boilerplate to write or maintain.

The core idea: the framework is the template. There's no starter to clone and no project to own before you've written a word. The only thing you touch is your content. When you outgrow the defaults, you add configuration one file at a time — and you can blume eject to a plain Astro project the day you want full control.

What makes it different

• Fast by default — Static HTML on Astro/Vite. The core theme ships no client framework JS so pages score well on Core Web Vitals out of the box. You opt into server features only when you need them.
• AI-ready out of the box — Emits llms.txt/llms-full.txt, serves any page's raw Markdown by appending .md to its URL, offers Copy as Markdown and Open in chat on every page, and can host an optional Ask AI assistant or an MCP server so coding agents read your docs directly.
• Zero configuration — even the template — A folder of docs is a complete project. Navigation is inferred from files, search works in dev and production with no hosted service, and theming is a handful of tokens.
• Type-safe to the core — blume.config.ts and every meta.ts are real TypeScript, validated by a schema and authored with defineConfig and defineMeta. Your editor autocompletes options and catches mistakes before a build.

Quickstart

Blume needs Node.js 22.12 or newer. From an empty or existing project:

npm i blume      # install the package
blume init       # scaffold: docs/index.mdx + blume.config.ts
blume dev        # dev server with hot reload
blume build      # static HTML to dist/, with a local search index

Blume works with any package manager and never requires you to set up Astro or Tailwind yourself.

Writing a page

Every page is Markdown or MDX with a little frontmatter. The title and description render as the page heading and intro automatically; built-in components (callouts, cards, tabs, steps, and more) need no imports.

---
title: Introduction
description: Welcome to my docs.
---

Welcome! Use **Markdown** and built-in components — no imports required:

:::note
Blume ships callouts, cards, tabs, steps, and more.
:::

Navigation, search, and page metadata are inferred from your files as you add them.

What's included

• Components — callouts, cards, steps, tabs, accordions, badges, file trees, and parameter tables, usable in MDX with no imports.
• Local search — Orama in dev and production; Pagefind is one flag away for large sites. No hosted index.
• AI — llms.txt, raw Markdown URLs, Copy as Markdown, Open in chat, an Ask AI assistant, and an MCP server endpoint served by the docs site itself.
• Navigation — inferred from files, refined with meta.ts or config.
• SEO — metadata, Open Graph images, RSS feeds, and JSON-LD.
• Customization — component overrides, React islands, custom pages, theme tokens, and a source-component registry via blume add.
• Eject — blume eject produces a standalone Astro project that still uses the blume package.

How it works

The Blume CLI discovers your content, builds a content graph, and generates a hidden Astro project under .blume/ that it drives for dev and build. The generated runtime is an implementation detail — you write Markdown, Blume handles the rest — until you choose to eject and own it.

Full documentation

This is a high-level overview. For complete, authoritative docs — configuration reference, every CLI command and flag, component APIs, content authoring, navigation, search, SEO, AI features, theming, and deployment — read the docs/ directory bundled inside the installed blume package.

Locate the package first — it is not always at the repository root. In a workspace monorepo (pnpm especially), blume is installed in the depending workspace's node_modules (e.g. apps/docs/node_modules/blume/docs), not the root. From the package that depends on blume, this prints the exact location:

node -e "console.log(require.resolve('blume/package.json'))"

The docs sit in docs/ next to that package.json. Start with docs/index.mdx (Introduction) and docs/01-quickstart.mdx, then browse the configuration/, content/, reference/, and advanced/ sections for specifics.