Basic Memory vs Big Brain

In-depth architectural comparison of the Basic Memory and Big Brain 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 Basic Memory when:

• You need dedicated capabilities in the Knowledge & Memory domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Freemium).
• Primary tools included: write_note, read_note, edit_note.

Explore Basic Memory Details

B

Choose Big 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).
• You have access to required keys: BIG_BRAIN_VAULT, BIG_BRAIN_MCP_TOKEN, BIG_BRAIN_MCP_ALLOWED_ORIGINS.
• Primary tools included: brain_overview, search_notes, read_note.

Explore Big Brain Details

Feature & Specification Comparison

Specification	Basic Memory basicmachines-co Knowledge & Memory	B Big Brain Knowledge & Memory
Summary	Persistent, local-first AI memory: a semantic knowledge graph of plain Markdown files that humans and LLMs both read and write. Works with any MCP client, with optional cloud sync and team workspaces.	Plain-markdown second brain for you and your AI: notes, projects, tasks, search, links.
Category & Scope	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": {
    "basicmachines-co-basic-memory": {
      "command": "uvx",
      "args": [
        "--prerelease=allow",
        "basic-memory"
      ]
    }
  }
}

{
  "mcpServers": {
    "big-brain": {
      "command": "npx",
      "args": [
        "-y",
        "@jzhao234/big-brain"
      ],
      "env": {
        "BIG_BRAIN_VAULT": "YOUR_BIG_BRAIN_VAULT_HERE",
        "BIG_BRAIN_MCP_TOKEN": "YOUR_BIG_BRAIN_MCP_TOKEN_HERE",
        "BIG_BRAIN_MCP_ALLOWED_ORIGINS": "YOUR_BIG_BRAIN_MCP_ALLOWED_ORIGINS_HERE"
      }
    }
  }
}

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