What is the key difference between Obsidian MCP and Vault Cortex?

Obsidian MCP belongs to the Knowledge & Memory category with local stdio execution, while Vault Cortex belongs to the Knowledge & Memory category with local stdio execution.

How do I install Obsidian MCP or Vault Cortex in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Obsidian MCP and Vault Cortex free or paid?

Obsidian MCP operates under a BYOK (Pay Provider Direct) model (OAuth 2.0). Vault Cortex operates under a Free / Open Source model (OAuth 2.0).

Which MCP server has more tools and community activity?

Obsidian MCP lists 6 tools with 2 views and 12 GitHub stars. Vault Cortex lists 6 tools with 2 views and 19 GitHub stars.

Can I use both Obsidian MCP and Vault Cortex together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Obsidian MCP vs Vault Cortex

In-depth architectural comparison of the Obsidian MCP and Vault Cortex MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Obsidian MCP

Knowledge & Memory · Local stdio

Quality: 47/100 (Fair) | Auth: OAuth 2.0

Vault Cortex

Knowledge & Memory · Local stdio

Quality: 44/100 (Fair) | Auth: OAuth 2.0

Verdict Summary: Choose Obsidian MCP if you need specialized Knowledge & Memory tools running via a local process. Choose Vault Cortex if your workspace requires Knowledge & Memory integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Obsidian MCP when:

You need dedicated capabilities in the Knowledge & Memory domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: OAuth 2.0 (BYOK (Pay Provider Direct)).
You have access to required keys: DATABASE_URL, OAUTH_CLIENT_ID, OAUTH_CLIENT_SECRET, OAUTH_REDIRECT_URI, EMBEDDING_PROVIDER, OPENAI_API_KEY.
Primary tools included: Semantic and full-text search via PostgreSQL with pgvector, Atomic CRUD operations on markdown notes, Wikilink graph traversal for contextual navigation.

Explore Obsidian MCP Details

Choose Vault Cortex when:

You need dedicated capabilities in the Knowledge & Memory domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: OAuth 2.0 (Free / Open Source).

Feature & Specification Comparison

Specification	Obsidian MCP maxkuminov Knowledge & Memory	Vault Cortex aliasunder Knowledge & Memory
Summary	Self-hosted MCP server for Obsidian with semantic + full-text search over PostgreSQL/pgvector, wikilink graph traversal, atomic note CRUD, OAuth 2.0, and a self-describing vault guide.	MCP server for Obsidian vaults — hybrid search, notes & files, memory, tasks, link graph, OAuth-protected.
Category & Scope	Knowledge & Memory

Tools & Capabilities Breakdown

Obsidian MCP Tools (6)

Semantic and full-text search via PostgreSQL with pgvector

Atomic CRUD operations on markdown notes

Wikilink graph traversal for contextual navigation

Self-describing vault guide for automatic schema and convention discovery

OAuth 2.0 authentication support

Pluggable embeddings including Ollama bge-m3 and OpenAI text-embedding-3 variants

Vault Cortex Tools (6)

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Obsidian MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "maxkuminov-obsidian-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "maxkuminov-obsidian-mcp"
      ],
      "env": {
        "DATABASE_URL": "YOUR_DATABASE_URL_HERE",
        "OAUTH_CLIENT_ID": "YOUR_OAUTH_CLIENT_ID_HERE",
        "OAUTH_CLIENT_SECRET": "YOUR_OAUTH_CLIENT_SECRET_HERE",
        "OAUTH_REDIRECT_URI": "YOUR_OAUTH_REDIRECT_URI_HERE",
        "EMBEDDING_PROVIDER": "YOUR_EMBEDDING_PROVIDER_HERE",
        "OPENAI_API_KEY": "YOUR_OPENAI_API_KEY_HERE"
      }
    }
  }
}

Vault Cortex Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "aliasunder-vault-cortex": {
      "command": "npx",
      "args": [
        "-y",
        "vault-cortex@latest"
      ],
      "env": {
        "VAULT_CORTEX_OAUTH_CLIENT_ID": "YOUR_VAULT_CORTEX_OAUTH_CLIENT_ID_HERE",
        "VAULT_CORTEX_OAUTH_CLIENT_SECRET": "YOUR_VAULT_CORTEX_OAUTH_CLIENT_SECRET_HERE",
        "VAULT_CORTEX_VAULT_PATH": "YOUR_VAULT_CORTEX_VAULT_PATH_HERE",
        "VAULT_CORTEX_SERVER_PORT": "YOUR_VAULT_CORTEX_SERVER_PORT_HERE"
      }
    }
  }
}

Frequently Asked Questions

Obsidian MCP is categorized under Knowledge & Memory and uses a local stdio subprocess. In contrast, Vault Cortex belongs to Knowledge & Memory using local stdio subprocess. Select Obsidian MCP when you need capabilities focused on knowledge & memory and Vault Cortex when you require tools for knowledge & memory.

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