MCP Server

Obsidian MCP Server

Give your AI Agents a seat at the table.

This plugin runs a local Model Context Protocol (MCP) server inside Obsidian. It allows external AI tools (like Claude Desktop, Cursor, or CLI agents) to connect to Obsidian, read your active context, and perform actions directly within the app.

⚠️ Status: Beta (Production Ready Logic).

Features

• Context Awareness: get_active_file lets the agent see exactly what you are working on.
• Vault Access: read_note, get_note_metadata, get_backlinks, and describe_vault provide full vault visibility.
• Note Management: create_note, edit_note, append_note, patch_note, rename_note, and delete_note allow agents to manage your notes.
• Attachment Handling: read_attachment returns images as MCP ImageContent (AI can see them); add_attachment saves binary files to the vault.
• Search: search_notes filters by date/tags/frontmatter; search_content does full-text or regex search with line-number snippets and optional metadata.
• Quick Capture: append_daily_note works with your Daily Notes settings (creates/appends correctly).
• Discovery: list_folder (with sorting, filtering, recursion), list_all_tags, list_recent_notes, and create_folder help agents explore and organize the vault.
• Session Tracking: list_sessions shows active connections with client name/version and per-session tool usage stats.
• Usage Statistics: Track tool call counts (total/successful/failed) in Settings, with persistent storage.
• Secure: Uses a local Auth Token with timing-safe comparison. Authentication can be disabled for local development.
• Access Control: Blacklist paths and tags to keep sensitive notes private.

Architecture

• Transport: Streamable HTTP.
• Endpoint: http://localhost:<PORT>/mcp
• Security: Bearer Token Authentication (enabled by default, can be disabled in settings).

Available Tools

All tools enforce access control rules before returning data.

Installation

Method 1: BRAT (Beta)

1. Install BRAT from Community Plugins.
2. Add Beta Plugin: Leonezz/obsidian-mcp-server
3. Enable "Obsidian MCP Server".

Configuration

1. Go to Settings -> Obsidian MCP Server.
2. Note your Server Port (Default: 27123).
3. Copy your Auth Token (or disable "Require Authentication" for local development).
4. Optionally configure Access Control blacklist rules for paths and tags.

Usage with MCP Clients

The server uses Streamable HTTP transport on http://localhost:<PORT>/mcp.

Tip: If you disabled "Require Authentication" in settings, omit the Authorization header / headers block from all configurations below.

Claude Code

Claude Code natively supports Streamable HTTP. Add the server via CLI:

claude mcp add --transport http obsidian http://localhost:27123/mcp \
  --header "Authorization: Bearer YOUR_TOKEN"

Or add it to your project's .mcp.json:

{
  "mcpServers": {
    "obsidian": {
      "type": "http",
      "url": "http://localhost:27123/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_TOKEN"
      }
    }
  }
}

Cursor

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (workspace):

{
  "mcpServers": {
    "obsidian": {
      "type": "streamable-http",
      "url": "http://localhost:27123/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_TOKEN"
      }
    }
  }
}

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "obsidian": {
      "serverUrl": "http://localhost:27123/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_TOKEN"
      }
    }
  }
}

Note: Windsurf uses "serverUrl" instead of "url".

Claude Desktop

Claude Desktop does not natively support Streamable HTTP in its config file. Use the mcp-remote proxy:

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "obsidian": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "http://localhost:27123/mcp",
        "--header",
        "Authorization: Bearer YOUR_TOKEN"
      ]
    }
  }
}

OpenClaw

OpenClaw does not yet support MCP natively. Use the bundled OpenClaw skill instead, which teaches the agent to communicate with the server via curl and jq.

Install the skill:

cp -r openclaw-skill/ ~/.openclaw/workspace/skills/obsidian-mcp/

Set the auth token:

export OBSIDIAN_MCP_TOKEN="YOUR_TOKEN"

Optionally set OBSIDIAN_MCP_PORT (default 27123) and OBSIDIAN_MCP_HOST (default 127.0.0.1).

Once installed, OpenClaw will automatically discover the skill and can read, search, create, and edit notes in your vault.

Other Clients

Any MCP client that supports Streamable HTTP can connect using:

• URL: http://localhost:27123/mcp
• Header: Authorization: Bearer YOUR_TOKEN

Instructions for AI Agents

If you are an AI Agent helping a user connect to this MCP server:

1. Verify Installation: Check that the user has Obsidian running with the obsidian-mcp-server plugin enabled.
2. Retrieve Connection Info: Ask the user for:
   • The Server Port (default 27123).
   • The Auth Token (from Obsidian Settings), unless they have disabled authentication.
3. Detect Client: Determine which MCP client the user is running (Claude Code, Cursor, Windsurf, Claude Desktop, etc.) and use the matching configuration format from the sections above.
4. Configure & Restart: Insert the server definition into the appropriate config file and tell the user to restart their MCP client.