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Mnemosyne

Official registry Data and databases

Evidence-tracked local memory MCP server: one SQLite file; corrections retire dependent memories.

Source code Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package mnemosy-ai
Claude Code 
claude mcp add mnemosyne -e 'MNEMOSYNE_INDEX_MODE=auto' -- npx -y mnemosy-ai@3.0.0-rc.3 mcp --db --workspace --agent
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mnemosyne": {
            "command": "npx",
            "args": [
                "-y",
                "mnemosy-ai@3.0.0-rc.3",
                "mcp",
                "--db",
                "--workspace",
                "--agent"
            ],
            "env": {
                "MNEMOSYNE_INDEX_MODE": "auto"
            }
        }
    }
}

Environment variables

  • MNEMOSYNE_INDEX_MODE Dense index used for semantic recall; defaults to auto

Frequently asked questions

What is Mnemosyne?

Evidence-tracked local memory MCP server: one SQLite file; corrections retire dependent memories.

How do I install Mnemosyne?

It runs on your machine. In Claude Code: claude mcp add mnemosyne -e 'MNEMOSYNE_INDEX_MODE=auto' -- npx -y mnemosy-ai@3.0.0-rc.3 mcp --db --workspace --agent. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Mnemosyne need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Mnemosyne open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Mnemosyne?

It is published by 28naem-del. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.