Obsidian Semantic MCP Server

Semantic MCP server for Obsidian - AI-optimized interface with 5 intelligent operations

Local serverstdio

What is the Obsidian Semantic MCP MCP server?

Connect Obsidian Semantic MCP to Claude, Cursor or any other MCP client and it stops being a tab you switch to. Semantic MCP server for Obsidian - AI-optimized interface with 5 intelligent operations. The obsidian semantic mcp mcp server is what makes that connection.

What the server does

A semantic, AI-optimized MCP server for Obsidian that consolidates 20 tools into 5 intelligent operations with contextual workflow hints.

Installation

The server ships on npm as obsidian-semantic-mcp, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • Configuration — The semantic workflow hints are defined in src/config/workflows.json and can be customized for your workflow preferences
  • Architecture — The Architecture tool exposed by this server
  • Testing — The project includes comprehensive Jest tests for the semantic system:

Credentials and setup notes

Configuration is passed through the environment: OBSIDIAN_API_KEY, OBSIDIAN_API_URL, OBSIDIAN_VAULT_NAME. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Where it fits

Plenty of planning and project tracking servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Obsidian Semantic MCP's toolset — Configuration, Architecture, Testing — is a fair guide to whether it matches your workflow. It is maintained by aaronsb; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Available tools

ToolWhat it does
ConfigurationThe semantic workflow hints are defined in src/config/workflows.json and can be customized for your workflow preferences.
ArchitectureThe Architecture tool exposed by this server.
TestingThe project includes comprehensive Jest tests for the semantic system:

How to install the Obsidian Semantic MCP MCP server

{
  "mcpServers": {
    "obsidian-semantic": {
      "command": "npx",
      "args": ["-y", "obsidian-semantic-mcp"],
      "env": {
        "OBSIDIAN_API_KEY": "your-value",
        "OBSIDIAN_API_URL": "your-value",
        "OBSIDIAN_VAULT_NAME": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

VariableDescriptionRequired
OBSIDIAN_API_KEYCredential the server authenticates with.Yes
OBSIDIAN_API_URLEndpoint or connection string the server talks to.Yes
OBSIDIAN_VAULT_NAMEConfiguration value read at startup.Optional

Example prompts to try

  • Use Obsidian Semantic MCP to Configuration.
  • Use Obsidian Semantic MCP to Architecture.
  • Use Obsidian Semantic MCP to Testing.

Frequently asked questions

It connects Obsidian Semantic MCP to MCP-compatible AI assistants such as Claude and Cursor, exposing 3 tools (Configuration, Architecture, Testing) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Obsidian Semantic MCP directly.