letta-mcp-server

High-performance Model Context Protocol (MCP) server for Letta AI, built with Rust.

Provides 7 tools with 87 operations for managing agents, memory, tools, sources, jobs, files, and MCP servers.

Install

``bash
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 |

Usage

$3

`bash
export LETTA_BASE_URL=http://your-letta-instance:8289
export LETTA_PASSWORD=your-password
`

$3

`bash
letta-mcp
`

$3

`bash
TRANSPORT=http PORT=3001 letta-mcp
`

Claude Desktop Configuration

`json
{
"mcpServers": {
"letta": {
"command": "letta-mcp",
"env": {
"LETTA_BASE_URL": "http://localhost:8289",
"LETTA_PASSWORD": "your-password"
}
}
}
}
`

Available Tools

| Tool | Ops | Description |
|------|-----|-------------|
| letta_agent_advanced | 22 | Agent lifecycle, messaging, context, export/import |
| letta_memory_unified | 15 | Core memory, blocks, archival passages, search |
| letta_tool_manager | 13 | Tool CRUD, attach/detach, bulk operations |
| letta_source_manager | 15 | Data sources, files, passages, attachments |
| letta_job_monitor | 4 | Job tracking, cancellation, active monitoring |
| letta_file_folder_ops | 8 | File sessions, folder management |
| letta_mcp_ops | 10 | MCP server management, tool discovery |

Docker Alternative

`bash
docker pull ghcr.io/oculairmedia/letta-mcp-server-rust:rust-latest
docker run -d -p 6507:6507 \
-e LETTA_BASE_URL=http://your-letta:8289 \
-e LETTA_PASSWORD=your-password \
ghcr.io/oculairmedia/letta-mcp-server-rust:rust-latest
``

License

MIT