How to add Mem0 MCP Server to Claude Desktop

Archived official Mem0 server for long-term agent memory: add, search, update, and delete memories via the Mem0 API. Paste the config into ~/Library/Application Support/Claude/claude_desktop_config.json and restart Claude Desktop.

Last updated June 14, 2026 · 655★ · stdio · apikey · official

Claude Desktop config for Mem0 MCP Server

pip install mem0-mcp-server

{
  "mcpServers": {
    "mem0-mcp-server": {
      "command": "uvx",
      "args": [
        "mem0-mcp-server"
      ],
      "env": {
        "MEM0_API_KEY": "<your-mem0-api-key>",
        "MEM0_DEFAULT_USER_ID": "<your-user-id>"
      }
    }
  }
}

Requires `uv` (the Python package runner). Install it from https://docs.astral.sh/uv/ if `uvx` is not found.

Setup steps

1Open Claude Desktop → Settings → Developer → Edit Config (this opens ~/Library/Application Support/Claude/claude_desktop_config.json).
2Paste the Mem0 MCP Server config below under the top-level "mcpServers" key.
3Fill in any placeholder secrets (API keys, paths) in the snippet.
4Save the file, then fully quit and reopen Claude Desktop.
5Open a chat and confirm Mem0 MCP Server's tools appear under the 🔌 tools menu.

Before you start

A Mem0 platform account and API key (m0-...) from app.mem0.ai
uv/uvx (recommended) or pip with Python to run mem0-mcp-server
Optional: MEM0_DEFAULT_USER_ID env var to scope memories to a user handle (defaults to 'mem0-mcp')

What Mem0 MCP Server can do in Claude Desktop

add_memory

Save text or conversation history (or explicit message objects) for a user/agent.

search_memories

Semantic search across existing memories with filters and limit.

get_memories

List memories with structured filters and pagination.

get_memory

Retrieve one memory by its memory_id.

update_memory

Overwrite a memory's text once the user confirms the memory_id.

delete_memory

Delete a single memory by memory_id.

delete_all_memories

Bulk delete all memories in the confirmed scope (user/agent/app/run).

delete_entities

Delete a user/agent/app/run entity and its memories.

Security

This repo is archived (read-only since March 2026): no maintenance, no security patches — Mem0 now points users at its hosted MCP endpoint instead. The server sends memory content to the Mem0 cloud API under your MEM0_API_KEY, and delete_all_memories / delete_entities are destructive bulk operations, so scope the key carefully.

Mem0 MCP Server + Claude Desktop FAQ

Where is the Claude Desktop config file?

Claude Desktop reads MCP servers from ~/Library/Application Support/Claude/claude_desktop_config.json. Paste the Mem0 MCP Server config there under the "mcpServers" key and restart the client.

Is Mem0 MCP Server safe to use with Claude Desktop?

Is mem0-mcp still safe to use?

It still works, but the repo has been a public archive since March 2026: no bug fixes, no security patches, no releases. For anything new, Mem0 recommends its hosted MCP server at https://mcp.mem0.ai/mcp; for local-first memory, OpenMemory in the mem0 monorepo is the sibling project.

What replaced mem0-mcp — and where does OpenMemory fit?

Two paths. The direct successor is Mem0's cloud-hosted MCP endpoint (https://mcp.mem0.ai/mcp), which needs no local process. OpenMemory is the local alternative from the same company: it runs the whole memory stack on your machine (Docker + dashboard), whereas mem0-mcp was a local shim that stored everything in the Mem0 cloud.

Where do my memories actually live?

In Mem0's cloud platform, not on your machine. The server is a stdio bridge that calls the Mem0 API with your MEM0_API_KEY, and responses are raw JSON from that API — so data residency and retention follow your Mem0 account, and revoking the key cuts off access.

View repo Full Mem0 MCP Server page