A Model Context Protocol server for Obsidian integration

This is a TypeScript-based MCP server that implements integration with Obsidian. It demonstrates core MCP concepts by providing:

• Resources representing Obsidian vault contents
• Tools for accessing vault data
• API integration with Obsidian

Project Statistics

• Total lines of code: 345
• Main files:
  • src/tool-handlers.ts (76 lines)
  • src/resource-handlers.ts (45 lines)
  • src/server.ts (32 lines)
  • src/api-client.ts (25 lines)

Directory Structure

obsidian-mcp/
├── .codegpt/
│   └── head
├── src/
│   ├── api-client.ts
│   ├── index.ts
│   ├── resource-handlers.ts
│   ├── server.ts
│   └── tool-handlers.ts
├── .SourceSageignore
├── package.json
├── README.md
└── tsconfig.json

Features

Resources

• Access Obsidian server info via obsidian://server-info URI
• Get vault contents with metadata
• JSON format for easy integration

Tools

• get_vault_contents - Retrieve contents of Obsidian vault
  • Takes path as optional parameter (default: root directory)
  • Returns structured JSON response

API Integration

• Secure HTTPS connection with Obsidian API
• Custom axios client with error handling
• Windows path normalization support

Development

Prerequisites

• Node.js v18+
• TypeScript 5.3+
• Obsidian API key (set as OBSIDIAN_API_KEY environment variable)

Setup

# Install dependencies
npm install

# Build the server
npm run build

# Start development server with auto-rebuild
npm run watch

Installation

To use with Claude Desktop, add the server config:

On MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json On Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "obsidian-mcp": {
      "command": "/path/to/obsidian-mcp/build/index.js",
      "env": {
        "OBSIDIAN_API_KEY": "your-api-key-here"
      }
    }
  }
}

Debugging

We recommend using the MCP Inspector:

npm run inspector

The Inspector will provide a URL to access debugging tools in your browser.

Dependencies

Runtime

• @modelcontextprotocol/sdk: MCP server implementation
• axios: HTTP client for API communication

Development

• @types/node: TypeScript definitions for Node.js
• typescript: TypeScript compiler