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Auditable memory (memory3l)

io.github.jayzht/memory3l-mcp · v0.2.0

Audited memory over MCP: an append-only fact ledger plus verifiable invariants I1-I5.

Set it up

Connect Runs on your machine

Terminal
claude mcp add memory3l-mcp -e MEMORY3L_ROOT=<MEMORY3L_ROOT> -e MEMORY3L_DB=<MEMORY3L_DB> -e MEMORY3L_ALLOW_WRITE=<MEMORY3L_ALLOW_WRITE> -- uvx memory3l-mcp==0.2.0
claude_desktop_config.json
{
  "mcpServers": {
    "memory3l-mcp": {
      "command": "uvx",
      "args": [
        "memory3l-mcp==0.2.0"
      ],
      "env": {
        "MEMORY3L_ROOT": "<MEMORY3L_ROOT>",
        "MEMORY3L_DB": "<MEMORY3L_DB>",
        "MEMORY3L_ALLOW_WRITE": "<MEMORY3L_ALLOW_WRITE>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "memory3l-mcp": {
      "command": "uvx",
      "args": [
        "memory3l-mcp==0.2.0"
      ],
      "env": {
        "MEMORY3L_ROOT": "<MEMORY3L_ROOT>",
        "MEMORY3L_DB": "<MEMORY3L_DB>",
        "MEMORY3L_ALLOW_WRITE": "<MEMORY3L_ALLOW_WRITE>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "memory3l-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "memory3l-mcp==0.2.0"
      ],
      "env": {
        "MEMORY3L_ROOT": "<MEMORY3L_ROOT>",
        "MEMORY3L_DB": "<MEMORY3L_DB>",
        "MEMORY3L_ALLOW_WRITE": "<MEMORY3L_ALLOW_WRITE>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
MEMORY3L_ROOT
Optional		Override the location of the memory3l audit core (development against a source checkout).
MEMORY3L_DB
Optional		Path to the SQLite fact-ledger file to serve.
MEMORY3L_ALLOW_WRITE
Optional		Set to 1 to also expose the append_facts tool.

Details

Package[email protected] (PYPI, stdio)
First published20 Sep 2026
Last updated20 Sep 2026
Registry nameio.github.jayzht/memory3l-mcp

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