Obsidian MCP Server is an MCP (Model Context Protocol) server that enables AI assistants to interact with Obsidian vaults. It exposes tools for reading, creating, editing and managing notes and tags, facilitating AI-powered note management inside Obsidian. The server supports reading and searching notes, creating new notes and directories, editing existing notes, moving and deleting notes, and comprehensive tag management (add, remove, rename), plus the ability to search vault contents. It requires Node.js 20 or higher and an Obsidian vault. Installation can be done manually by configuring Claude Desktop to run the MCP server with absolute vault paths, or via Smithery. Development instructions show cloning the repository, installing dependencies, building, and wiring Claude Desktop to the built main.js. A security warning notes that the server has read/write access if enabled, so users should back up their vaults and review tool actions. Troubleshooting covers common issues and log locations for macOS and Windows. Documentation is available in the docs directory (creating-tools.md, tool-examples.md) to guide creating tools and examples.