# Vault CMS > Vault CMS is the open-source headless CMS that turns Obsidian into a publishing platform for Astro websites. Content stays as plain Markdown in your repo. Every documentation page is also available as raw Markdown by appending `.md` to its URL (e.g. https://docs.vaultcms.org/guides/introduction.md). A complete corpus is available at https://docs.vaultcms.org/llms-full.txt. ## Guides - [Common issues](https://docs.vaultcms.org/guides/troubleshooting-common-issues/): Fixes for typical installation and day-to-day problems with Vault CMS. - [FAQ](https://docs.vaultcms.org/guides/troubleshooting-faq/): Common questions about Vault CMS, Obsidian, and the Astro workflow. - [Frontmatter Properties](https://docs.vaultcms.org/guides/frontmatter-properties/): YAML frontmatter fields — Obsidian calls them properties — that Vault CMS and Astro use for posts and pages. - [Images in content](https://docs.vaultcms.org/guides/images/): Insert and manage images with Image Manager and frontmatter. - [Installation](https://docs.vaultcms.org/guides/installation/): CLI quick start, presets, manual install, and what the installer changes on disk. - [Introduction](https://docs.vaultcms.org/guides/introduction/): Overview, philosophy, and default settings for Vault CMS. - [Launch Checklist](https://docs.vaultcms.org/guides/launch-checklist/): Every step from Obsidian vault to live website. A universal reference for any theme. - [MCP server (AI agents)](https://docs.vaultcms.org/guides/mcp-server/): Install and configure Vault CMS from inside Claude Code, Cursor, Claude Desktop, and other AI agents that speak the Model Context Protocol. - [Mobile Guide](https://docs.vaultcms.org/guides/mobile-guide/): Using Vault CMS on mobile devices. - [Presets](https://docs.vaultcms.org/guides/presets/): Install Vault CMS pre-tuned for Starlight, Chiri, Slate, and other Astro themes. - [SEO for content](https://docs.vaultcms.org/guides/seo/): Use the SEO plugin and frontmatter to improve search visibility. - [Theme & UI](https://docs.vaultcms.org/guides/theme-and-ui/): The visual identity of Vault CMS powered by Oxygen. - [Vault Hotkeys](https://docs.vaultcms.org/guides/vault-hotkeys/): A guide to the default hotkeys in Vault CMS. - [Writing content](https://docs.vaultcms.org/guides/writing-content/): Create and edit posts in Obsidian with Vault CMS defaults. ## Concepts - [Content types](https://docs.vaultcms.org/concepts/content-types/): How Vault CMS maps folders and routes to Astro content collections and URLs. - [How it works](https://docs.vaultcms.org/concepts/how-it-works/): How Obsidian, the vault, and Git connect to your Astro site. - [Publishing](https://docs.vaultcms.org/concepts/publishing/): Draft workflow, Git push, and how content reaches your live Astro site. ## Themes - [Astro Modular](https://docs.vaultcms.org/themes/astro-modular/): A free, open-source Astro blog theme designed for Obsidian users, with a dedicated settings plugin and full Vault CMS integration. - [Axis](https://docs.vaultcms.org/themes/axis/): A premium Astro theme for personal publishing, built for Vault CMS with a dedicated Obsidian settings plugin. - [Chiri](https://docs.vaultcms.org/themes/chiri/): A minimal, free Astro blog theme. Great for beginners getting started with Vault CMS. - [Fuwari](https://docs.vaultcms.org/themes/fuwari/): A free, feature-rich Astro blog theme with page transitions, search, and categories. - [Slate](https://docs.vaultcms.org/themes/slate/): A clean, free Astro blog theme with tags, search, and dark mode. - [Starlight](https://docs.vaultcms.org/themes/starlight/): Astro's official documentation theme. Vault CMS adds Obsidian-powered content management to Starlight docs sites. - [Theme Comparison](https://docs.vaultcms.org/themes/comparison/): Feature comparison of Astro themes that work with Vault CMS. ## Plugins - [Astro Composer](https://docs.vaultcms.org/plugins/astro-composer/): Automating content creation and slug management. - [Bases CMS](https://docs.vaultcms.org/plugins/bases-cms/): Managing your content with a grid-based interface. - [BRAT](https://docs.vaultcms.org/plugins/brat/): Load beta plugins from GitHub repositories. - [Data Files Editor](https://docs.vaultcms.org/plugins/data-files-editor/): Edit data files like JSON, YAML, and more within Obsidian. - [Disable Tabs](https://docs.vaultcms.org/plugins/disable-tabs/): Ensure opening any new tab replaces the current one. - [Editing Toolbar](https://docs.vaultcms.org/plugins/editing-toolbar/): A WYSIWYG toolbar for Obsidian. - [Explorer Focus](https://docs.vaultcms.org/plugins/explorer-focus/): Simplify your file explorer view to the relevant directory. - [File Name History](https://docs.vaultcms.org/plugins/file-name-history/): Keep track of old post or page URLs. - [Folder Notes](https://docs.vaultcms.org/plugins/folder-notes/): Simplify your file explorer view for folder-based content. - [Git](https://docs.vaultcms.org/plugins/git/): Publish from Obsidian with obsidian-git—auth, push, commit messages, and auto-push. - [Home Base](https://docs.vaultcms.org/plugins/home-base/): Set your default screen to a directory of all your content. - [Image Manager](https://docs.vaultcms.org/plugins/image-manager/): Managing images and SEO assets. - [Nested Properties](https://docs.vaultcms.org/plugins/nested-properties/): Edit nested YAML properties natively in Obsidian's properties panel. - [Omnisearch](https://docs.vaultcms.org/plugins/omnisearch/): A search engine that just works. - [Oxygen Settings](https://docs.vaultcms.org/plugins/oxygen-settings/): Configure advanced customization options in Oxygen Theme. - [Property Over File Name](https://docs.vaultcms.org/plugins/property-over-file-name/): Use the title property as a primary label instead of its file name. - [SEO](https://docs.vaultcms.org/plugins/seo/): Auditing your content for search engines and AI. - [Settings Search](https://docs.vaultcms.org/plugins/settings-search/): Global search for all settings in Obsidian. - [Tag Wrangler](https://docs.vaultcms.org/plugins/tag-wrangler/): Rename, merge, and search tags from the tags view. - [UI Tweaker](https://docs.vaultcms.org/plugins/ui-tweaker/): Hide and adjust UI elements in Obsidian. - [Vault CMS (Plugin)](https://docs.vaultcms.org/plugins/vault-cms/): The core companion plugin with setup wizard. - [Zen Mode](https://docs.vaultcms.org/plugins/zen-mode/): Focused writing environment by removing UI distractions.