AI & MemoryMCP RegistrynpmB · 63

memory-mcp

com.letta · Updated 1y ago

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

At a glance

memory-mcp is an MCP server in the AI & Memory category. It runs locally over stdio via `npx -y @letta-ai/memory-mcp`, and needs LETTA_API_KEY. It scores B (63/100) on the MCP Skills Hub health score as of Oct 28, 2026.

Source

One-click install

VS Code VS Code Insiders Cursor

Opens your editor and pre-fills the config. Your editor will ask before adding it.

How to install memory-mcp in your AI client

Setup for Claude Code, Claude Desktop, Cursor, Codex, Windsurf, Cline and VS Code — copy-paste ready.

How to install memory-mcp in Claude CodeAnthropic's agentic CLI

Add the server

bash

claude mcp add memory-mcp -e 'LETTA_API_KEY=<LETTA_API_KEY>' -- npx -y @letta-ai/memory-mcp

Fill in your credentials
Replace <LETTA_API_KEY> with your real value. Keep secrets out of any config file you commit.
3
Verify it's connected
bash
```
claude mcp list
```
Sharing it with your team?
Add `--scope project` to write it to .mcp.json in the repository root, which you can commit (with the secrets left as environment variables).
Use it in a session
Ask Claude to use the tools this server exposes. It discovers them automatically.

How to install memory-mcp in Claude DesktopDesktop app (MCP config)

Open your MCP config
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

Add this server

json

{
  "mcpServers": {
    "memory-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@letta-ai/memory-mcp"
      ],
      "env": {
        "LETTA_API_KEY": "<LETTA_API_KEY>"
      }
    }
  }
}

Fill in your credentials
Replace <LETTA_API_KEY> with your real value. Keep secrets out of any config file you commit.
Restart Claude Desktop
The tools appear under the 🔌 menu once the app reloads.

How to install memory-mcp in CursorAI-first code editor

Create / edit .cursor/mcp.json in your project

json

{
  "mcpServers": {
    "memory-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@letta-ai/memory-mcp"
      ],
      "env": {
        "LETTA_API_KEY": "<LETTA_API_KEY>"
      }
    }
  }
}

Fill in your credentials
Replace <LETTA_API_KEY> with your real value. Keep secrets out of any config file you commit.
Enable it
Cursor Settings → MCP → toggle the server on. Tools become available to the Composer/Agent.

How to install memory-mcp in Codex CLIOpenAI coding agent

Add to ~/.codex/config.toml

toml

[mcp_servers.memory-mcp]
command = "npx"
args = ["-y", "@letta-ai/memory-mcp"]
env = { LETTA_API_KEY = "<LETTA_API_KEY>" }

Fill in your credentials
Replace <LETTA_API_KEY> with your real value. Keep secrets out of any config file you commit.
Run Codex
Codex loads MCP servers from config.toml on startup and exposes their tools to the agent.

How to install memory-mcp in WindsurfCodeium's agentic IDE

Edit ~/.codeium/windsurf/mcp_config.json

json

{
  "mcpServers": {
    "memory-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@letta-ai/memory-mcp"
      ],
      "env": {
        "LETTA_API_KEY": "<LETTA_API_KEY>"
      }
    }
  }
}

Fill in your credentials
Replace <LETTA_API_KEY> with your real value. Keep secrets out of any config file you commit.
Reload
Windsurf → Cascade → refresh MCP servers. Cascade can now call the tools.

How to install memory-mcp in ClineVS Code autonomous agent

Open Cline → MCP Servers → Configure
Adds to cline_mcp_settings.json.

Add the server

json

{
  "mcpServers": {
    "memory-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@letta-ai/memory-mcp"
      ],
      "env": {
        "LETTA_API_KEY": "<LETTA_API_KEY>"
      }
    }
  }
}

Fill in your credentials
Replace <LETTA_API_KEY> with your real value. Keep secrets out of any config file you commit.

How to install memory-mcp in VS CodeCopilot / MCP support

Create .vscode/mcp.json

json

{
  "servers": {
    "memory-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@letta-ai/memory-mcp"
      ],
      "env": {
        "LETTA_API_KEY": "<LETTA_API_KEY>"
      }
    }
  }
}

Fill in your credentials
Replace <LETTA_API_KEY> with your real value. Keep secrets out of any config file you commit.
Start it
VS Code shows a ▶ Start action above the server entry. Agent mode (Copilot Chat) can then use the tools.

What does memory-mcp need from you?

API key — Letta API key for memory operations

LETTA_API_KEYrequiredsecretEnvironment variable
Letta API key for memory operations
LETTA_USER_IDoptionalEnvironment variable
Unique user identifier for associated memories

Pass secrets through your shell environment rather than committing them into a config file.

What tools does memory-mcp expose?

This server runs as a local package. We only query remote servers for their tool list — asking this one would mean executing it, so its tools are listed in the documentation below.

What the code can do

Read from the published package source — never executed. Parsed 1 of 1 source file.

This server can read your environment variables.

How it was published

No provenance attestation — there is nothing linking this published artifact to a specific source commit.
4 npm maintainers · last published by sarahwooders.

Maintainer of this package and think something here is wrong? Tell us and we'll correct it.

Before you install

Signals gathered from the source repo and package registry — not a safety verdict.

What it can reach

Runs code on your machine — Executes as a local process with your user's permissions, including filesystem access.
Downloads at launch — The package is fetched from its registry each run unless you pin a version.

Package last published 1 year ago — No release in over a year.

Client compatibility

Claude Code: NativeClaude Desktop: NativeCursor: NativeCodex CLI: NativeWindsurf: NativeCline: NativeVS Code: Native

Health score

B · 63

Maintenance, adoption, transparency and packaging — not a safety audit. How this is calculated

Maintenance30%not measurable
No commit history available.
Adoption20%not measurable
No usage data available.
Transparency20%25%
1/4: ✓ public source repo, ✗ declared license, ✗ documentation, ✗ discoverable tool list.
Provenance15%75%
Links to its own repository; package linkage unverified.
Packaging15%100%
Publishes a pinned version (2.0.2).

Alternatives to memory-mcp

Maintain memory-mcp? Add a badge to your README

Shows its health grade, and links readers to install steps for every client.

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Catalog data refreshed Oct 28, 2026. Something wrong? Report it.