Longmem vs Octobrain

In-depth architectural comparison of the Longmem 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?

Choose Longmem 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 Longmem Details

Choose Octobrain 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 Octobrain Details

Feature & Specification Comparison

Specification	Longmem Knowledge & Memory	Octobrain Knowledge & Memory
Summary	Persistent cross-project memory for Cursor and Claude Code using local semantic search.	Persistent memory for AI assistants with semantic search and knowledge graph relationships.
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": {
    "longmem": {
      "url": "https://raw.githubusercontent.com/marerem/longmem/main/longmem_github_logo.svg"
    }
  }
}

{
  "mcpServers": {
    "octobrain": {
      "url": "https://img.shields.io/crates/v/octobrain.svg)](https://crates.io/crates/octobrain"
    }
  }
}

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