Is Letta MCP Server safe to use?

Letta MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.

How do I install Letta MCP Server?

Letta MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can Letta MCP Server do?

Letta MCP Server provides 7 tools: letta_agent_advanced, letta_memory_unified, letta_tool_manager, letta_source_manager, letta_job_monitor and 2 more. See the full tools list on the server page for descriptions and parameters.

What AI clients work with Letta MCP Server?

Letta MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is Letta MCP Server actively maintained?

Letta MCP Server is actively maintained — last commit was 3 days ago. It has 76 GitHub stars.

Letta MCP Server

Name: Letta MCP Server
Author: oculairmedia

letta-mcp-server · by oculairmedia

MCP server to manage letta server and comunicate with agents

76 60/wk 7 tools GitHub npm

No known CVEs

MIT license

Actively maintained

Last commit 3d ago

Works with most clients

Transport: stdio, sse, http

7 tools · ~819 tok

Grade B · 0.4% of 200K ctx

Edit this pageView history

AI / ML

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "letta": {
      "env": {
        "LETTA_BASE_URL": "http://localhost:8283",
        "LETTA_PASSWORD": "your-password"
      },
      "command": "letta-mcp"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/letta-mcp-server)](https://mcppedia.org/s/letta-mcp-server)

Read me

What Letta MCP Server does

A high-performance Model Context Protocol (MCP) server for Letta AI, built with Rust and the TurboMCP framework.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'letta-mcp-server' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

84/100across 5 weighted dimensions

How we score →

0255075100

−16

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked letta-mcp-server against OSV.dev.

Inventory

Tools (7)

Click any tool to inspect its schema.

~819 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Letta MCP Server safe to use?: Letta MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Letta MCP Server?: Letta MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can Letta MCP Server do?: Letta MCP Server provides 7 tools: letta_agent_advanced, letta_memory_unified, letta_tool_manager, letta_source_manager, letta_job_monitor and 2 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Letta MCP Server?: Letta MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Letta MCP Server actively maintained?: Letta MCP Server is actively maintained — last commit was 3 days ago. It has 76 GitHub stars.

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Get CVE alerts and security updates for Letta MCP Server and similar servers.

Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

AI / ML

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "letta": {
      "env": {
        "LETTA_BASE_URL": "http://localhost:8283",
        "LETTA_PASSWORD": "your-password"
      },
      "command": "letta-mcp"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/letta-mcp-server)](https://mcppedia.org/s/letta-mcp-server)

Read me

What Letta MCP Server does

A high-performance Model Context Protocol (MCP) server for Letta AI, built with Rust and the TurboMCP framework.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'letta-mcp-server' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

Letta MCP Server

A high-performance Model Context Protocol (MCP) server for Letta AI, built with Rust and the TurboMCP framework.

Features

7 Consolidated Tools covering 103 operations using the discriminator pattern
High Performance -- Rust, ~10-30MB memory, <500ms startup, parallel fan-out via tokio::join! and buffer_unordered
Dual Transport -- stdio (Claude Desktop, Cursor, etc.) and HTTP (production deployments)
Response Size Optimization -- 68-96% reduction in response sizes for LLM context efficiency
Type-Narrowed Schemas -- specific object/array types with per-parameter descriptions (no generic Value params)
Multi-Platform -- macOS, Linux, Windows (x64 and arm64)
Letta 0.16.x Compatible -- archives, conversations, MCP servers v2
MCP 2025-11-25 Compliant -- streamable HTTP transport with SSE
Compile-Time Routing -- zero runtime overhead for tool dispatch via TurboMCP v3 macros

Quick Start

npm (Recommended)

npm install -g letta-mcp-server

The correct binary for your platform is installed automatically.

Platform	Package
macOS Intel	`letta-mcp-darwin-x64`
macOS Apple Silicon	`letta-mcp-darwin-arm64`
Linux x64	`letta-mcp-linux-x64`
Linux arm64	`letta-mcp-linux-arm64`
Windows x64	`letta-mcp-windows-x64`

Docker

docker pull ghcr.io/oculairmedia/letta-mcp-server-rust:rust-latest

docker run -d \
  -p 6507:6507 \
  -e LETTA_BASE_URL=http://your-letta-instance:8283 \
  -e LETTA_PASSWORD=your-password \
  -e TRANSPORT=http \
  --name letta-mcp \
  ghcr.io/oculairmedia/letta-mcp-server-rust:rust-latest

Docker Compose

services:
  letta-mcp:
    image: ghcr.io/oculairmedia/letta-mcp-server-rust:rust-latest
    container_name: letta-mcp
    restart: unless-stopped
    ports:
      - '6507:6507'
    environment:
      LETTA_BASE_URL: ${LETTA_BASE_URL}
      LETTA_PASSWORD: ${LETTA_PASSWORD}
      TRANSPORT: http
      PORT: 6507
      RUST_LOG: info
    env_file:
      - .env
    healthcheck:
      test: ['CMD-SHELL', "timeout 1 bash -c '</dev/tcp/localhost/6507' || exit 1"]
      interval: 30s
      timeout: 10s
      retries: 3

Environment Variables

Variable	Required	Default	Description
`LETTA_BASE_URL`	Yes	—	Letta API URL (e.g. `http://localhost:8283`)
`LETTA_PASSWORD`	Yes	—	Letta API password
`TRANSPORT`	No	`stdio`	Transport mode: `stdio` or `http`
`PORT`	No	`6507`	HTTP port (when `TRANSPORT=http`)
`RUST_LOG`	No	`info`	Log level: `debug`, `info`, `warn`, `error`
`RUST_BACKTRACE`	No	`0`	Enable backtraces (`0` or `1`)
`LETTA_MCP_MAX_VALUE_LEN`	No	`500`	Max characters for block/passages/search values
`LETTA_MCP_CORE_MEMORY_PREVIEW_LEN`	No	`200`	Max characters for core memory previews

Available Tools

The server provides 7 consolidated tools with 103 operations:

| Tool | Operation

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

84/100across 5 weighted dimensions

How we score →

0255075100

−16

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked letta-mcp-server against OSV.dev.

Inventory

Tools (7)

Click any tool to inspect its schema.

~819 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Letta MCP Server safe to use?: Letta MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Letta MCP Server?: Letta MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can Letta MCP Server do?: Letta MCP Server provides 7 tools: letta_agent_advanced, letta_memory_unified, letta_tool_manager, letta_source_manager, letta_job_monitor and 2 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Letta MCP Server?: Letta MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Letta MCP Server actively maintained?: Letta MCP Server is actively maintained — last commit was 3 days ago. It has 76 GitHub stars.