Mimir — Persistent Memory Engine vs Octobrain

In-depth architectural comparison of the Mimir — Persistent Memory Engine and Octobrain 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?

M

Choose Mimir — Persistent Memory Engine 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 Mimir — Persistent Memory Engine Details

Choose Octobrain 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 Octobrain Details

Feature & Specification Comparison

Specification	M Mimir — Persistent Memory Engine Knowledge & Memory	Octobrain Knowledge & Memory
Summary	Persistent memory for AI agents. 36+ MCP tools: encryption, decay, hybrid search, knowledge graph.	Persistent memory for AI assistants with semantic search and knowledge graph relationships.
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": {
    "mimir-persistent-memory-engine": {
      "command": "npx",
      "args": [
        "-y",
        "mimir-persistent-memory-engine"
      ]
    }
  }
}

{
  "mcpServers": {
    "octobrain": {
      "command": "npx",
      "args": [
        "-y",
        "octobrain"
      ]
    }
  }
}

Related MCP Server Comparisons