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com.letta/memory-mcp

Official registry AI and agents

MCP server for AI memory management using Letta - Standard MCP format

Source code

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 @letta-ai/memory-mcp
Claude Code 
claude mcp add memory-mcp -e 'LETTA_API_KEY=<your letta_api_key>' -e 'LETTA_USER_ID=<LETTA_USER_ID>' -- npx -y @letta-ai/memory-mcp@2.0.2
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "memory-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "@letta-ai/memory-mcp@2.0.2"
            ],
            "env": {
                "LETTA_API_KEY": "<your letta_api_key>",
                "LETTA_USER_ID": "<LETTA_USER_ID>"
            }
        }
    }
}

Environment variables

  • LETTA_API_KEY required secret Letta API key for memory operations
  • LETTA_USER_ID Unique user identifier for associated memories

Frequently asked questions

What is com.letta/memory-mcp?

MCP server for AI memory management using Letta - Standard MCP format

How do I install com.letta/memory-mcp?

It runs on your machine. In Claude Code: claude mcp add memory-mcp -e 'LETTA_API_KEY=<your letta_api_key>' -e 'LETTA_USER_ID=<LETTA_USER_ID>' -- npx -y @letta-ai/memory-mcp@2.0.2. For other clients, paste the JSON configuration from this page into their MCP settings.

Does com.letta/memory-mcp need an API key?

Yes. It expects LETTA_API_KEY, which you set in its configuration.

Is com.letta/memory-mcp open source?

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

Who maintains com.letta/memory-mcp?

It is published by letta-ai. 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.