Obsidian Brain vs Second Brain MCP

In-depth architectural comparison of the Obsidian Brain and Second Brain MCP 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.

Which MCP Server Should You Choose?

O

Choose Obsidian Brain when:

• You need dedicated capabilities in the Knowledge & Memory domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Obsidian Brain Details

Choose Second Brain MCP when:

• You need dedicated capabilities in the Knowledge & Memory domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Second Brain MCP Details

Feature & Specification Comparison

Specification	O Obsidian Brain Knowledge & Memory	Second Brain MCP Knowledge & Memory
Summary	Obsidian MCP server: semantic search, knowledge graph, and vault editing. No plugin required.	Self-maintaining knowledge vault: figure-level search, auto-wikilinks, and memory compression.
Category & Scope	Knowledge & Memory	Knowledge & Memory

Tools & Capabilities Breakdown

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).

{
  "mcpServers": {
    "obsidian-brain": {
      "command": "npx",
      "args": [
        "-y",
        "cache"
      ]
    }
  }
}

{
  "mcpServers": {
    "second-brain-mcp-2": {
      "command": "uvx",
      "args": [
        "mcp-second-brain"
      ]
    }
  }
}

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