What is Obsidian MCP Server used for?

Obsidian MCP Server is an MCP server that lets AI assistants read, search, write and surgically edit Obsidian vault notes, tags and frontmatter through the Local REST API plugin. It is a good fit for letting AI assistants work with your notes and automating vault edits from agents.

Is Obsidian MCP Server open source?

Yes. Obsidian MCP Server is open source under the Apache-2.0 licence. Its source code is on GitHub at cyanheads/obsidian-mcp-server and is written mainly in TypeScript.

Is Obsidian MCP Server free?

Yes. Obsidian MCP Server is open source, so the software itself is free to use.

What are some alternatives to Obsidian MCP Server?

Similar open-source tools in the AI Tools category include pi-llm-wiki, LobeHub and Gemini CLI. SaaS products in the same category include AI Football, kapa.ai and Aera Browser.

Is Obsidian MCP Server actively maintained?

Yes. The most recent commit to Obsidian MCP Server was on 23 September 2026, and the latest release is v3.6.0, published on 23 September 2026. The project has 690 stars on GitHub.

Obsidian MCP Server: open-source AI tools

About Obsidian MCP Server

obsidian-mcp-server is a Model Context Protocol server for working with Obsidian vaults from AI assistants. It can read, write, search and make precise edits to notes, including individual sections, frontmatter and tags, by talking to the Obsidian Local REST API plugin.

It exposes 14 tools and 3 resources, with folder-scoped read and write permissions built in. Tools include reading a note as raw content, a structured form or a single section, listing notes and tags, searching by text, JSONLogic or BM25-ranked Omnisearch results with pagination, and writing or appending to notes. By default it refuses whole-file overwrites of existing notes, and listing and executing Obsidian commands is opt-in through an environment variable.

The server runs either as a stdio process or as a local Streamable HTTP server, is written in TypeScript and published on npm, and is licensed under Apache-2.0. It requires Obsidian with the Local REST API plugin enabled and runs on your own machine.

Key features

Read and write Obsidian notes via MCP
Section, frontmatter and tag edits
Search by text, JSONLogic or Omnisearch
Folder-scoped permissions
STDIO or Streamable HTTP transport
14 tools and 3 resources

Good fit for

→Letting AI assistants work with your notes
→Automating vault edits from agents

Built with: TypeScript
Tags: mcp; obsidian; note-taking; ai-tools; typescript; knowledge-base; model-context-protocol

Obsidian MCP Server: questions and answers

What is Obsidian MCP Server used for?: Obsidian MCP Server is an MCP server that lets AI assistants read, search, write and surgically edit Obsidian vault notes, tags and frontmatter through the Local REST API plugin. It is a good fit for letting AI assistants work with your notes and automating vault edits from agents.
Is Obsidian MCP Server open source?: Yes. Obsidian MCP Server is open source under the Apache-2.0 licence. Its source code is on GitHub at cyanheads/obsidian-mcp-server and is written mainly in TypeScript.
Is Obsidian MCP Server free?: Yes. Obsidian MCP Server is open source, so the software itself is free to use.
What are some alternatives to Obsidian MCP Server?: Similar open-source tools in the AI Tools category include pi-llm-wiki, LobeHub and Gemini CLI. SaaS products in the same category include AI Football, kapa.ai and Aera Browser.
Is Obsidian MCP Server actively maintained?: Yes. The most recent commit to Obsidian MCP Server was on 23 September 2026, and the latest release is v3.6.0, published on 23 September 2026. The project has 690 stars on GitHub.