Mimir — Persistent Memory Engine vs PMB AI

In-depth architectural comparison of the Mimir — Persistent Memory Engine and PMB AI 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 remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Mimir — Persistent Memory Engine Details

Choose PMB AI 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 PMB AI Details

Feature & Specification Comparison

Specification	M Mimir — Persistent Memory Engine Knowledge & Memory	PMB AI Knowledge & Memory
Summary	Persistent memory for AI agents. 36+ MCP tools: encryption, decay, hybrid search, knowledge graph.	Local-first persistent memory for AI coding agents.
Category & Scope	Knowledge & Memory	Knowledge & Memory
Quality signal

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": {
      "url": "https://perseus.observer"
    }
  }
}

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

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