Letta MCP Server

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
LETTA_BASE_URLYesYour Letta API URL
LETTA_PASSWORDYesYour Letta API password

Schema

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription

No resources

Tools

Functions exposed to the LLM to take actions

NameDescription
create_agent

Create a new Letta agent with specified configuration

list_agents

List all available agents in the Letta system

prompt_agent

Send a message to an agent and get a response

list_agent_tools

List all tools available for a specific agent

list_tools

List all available tools on the Letta server

attach_tool

Attach a tool to an agent

list_memory_blocks

List all memory blocks available in the Letta system

attach_memory_block

Attach a memory block to an agent

create_memory_block

Create a new memory block in the Letta system