M3 Memory

local MCP server

Installation

Terminal

claude mcp add m3-memory -- uvx m3-memory

Run in your project folder. Add --scope user to use it everywhere.

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "m3-memory": {
      "command": "uvx",
      "args": [
        "m3-memory"
      ]
    }
  }
}

Local-first memory — 100+ tools, 99.2% LongMemEval-S retrieval@10, hybrid search, GDPR, no cloud.

M3 Memory is a local MCP server distributed as the pypi package m3-memory.

Run: claude mcp add m3-memory -- uvx m3-memory

Run: codex mcp add m3-memory -- uvx m3-memory

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