io.github.daedalus/mcp-external-memory

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An MCP server that gives LLMs persistent, searchable semantic memory

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

PYPI package mcp-external-memory
Claude Code
claude mcp add mcp-external-memory -- uvx mcp-external-memory==0.1.2
JSON configuration (Claude Desktop, Cursor, VS Code)
{
    "mcpServers": {
        "mcp-external-memory": {
            "command": "uvx",
            "args": [
                "mcp-external-memory==0.1.2"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. mcp-external-memory
  2. Install
  3. Usage
  4. CLI
  5. API
  6. Development
  7. MCP Registry

mcp-external-memory

An MCP server that gives LLMs persistent, searchable semantic memory.

Install

pip install mcp-external-memory

Usage

from mcp_external_memory import memory_store, memory_search

# Store a memory
result = memory_store(content="Alice prefers dark mode", namespace="users", tags=["alice", "ui"])

# Search memories
results = memory_search(query="what does Alice prefer?", namespace="users")

CLI

mcp-external-memory --help

API

Tools
ToolDescription
memory_storePersist text + optional namespace/tags/metadata
memory_searchSemantic search (cosine similarity) over all memories
memory_getRetrieve a single memory by ID
memory_deleteDelete a memory by ID
memory_listList memories with optional namespace/tag filter + pagination
memory_statsCount of memories, namespaces, DB path
memory_updateUpdate an existing memory
Embedding Backends

The server supports multiple embedding backends:

  • TF-IDF (default): Pure Python, no external dependencies
  • OpenAI: Uses text-embedding-3-small model
  • Ollama: Local embeddings with Ollama

Set via MEMORY_EMBED_BACKEND environment variable.

Development

git clone https://github.com/daedalus/mcp-external-memory.git
cd mcp-external-memory
pip install -e ".[test]"

# run tests
pytest

# format
ruff format src/ tests/

# lint
ruff check src/ tests/

# type check
mypy src/

MCP Registry

mcp-name: io.github.daedalus/mcp-external-memory

Frequently asked questions

What is io.github.daedalus/mcp-external-memory?

An MCP server that gives LLMs persistent, searchable semantic memory

How do I install io.github.daedalus/mcp-external-memory?

It runs on your machine. In Claude Code: claude mcp add mcp-external-memory -- uvx mcp-external-memory==0.1.2. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.daedalus/mcp-external-memory need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is io.github.daedalus/mcp-external-memory open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains io.github.daedalus/mcp-external-memory?

It is published by daedalus. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.