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External Memory MCP server

by daedalus·io.github.daedalus/mcp-external-memory·v0.1.2
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An MCP server that gives LLMs persistent, searchable semantic memory

B82/100grade B
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Safety scan
B82/100

full report

Adoption
New

0 stars23 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

External Memory tools (7, 2 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • memory_deletewrite action

    Delete a memory by its ID.

  • memory_get

    Retrieve a specific memory by its ID.

  • memory_list

    List stored memories, optionally filtered by namespace or tags.

  • memory_search

    Semantic search over stored memories.

  • memory_stats

    Return memory store statistics: total memories, namespace counts, DB path.

  • memory_store

    Persist a piece of information to long-term semantic memory.

  • memory_updatewrite action

    Update an existing memory's content, namespace, tags, and/or metadata.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • Code scan6 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 159 days ago8/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 82/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How External Memory compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
82/100
higher than 63% of 48,273 servers
Tools
7
the typical server has 7
Tools that change things
29%
typical: 0%. Fewer write tools means less an agent can break
Downloads a week
23
more than 10% of 11,915 servers with a package

What its tools let an agent do: 5 read · 2 change

Install External Memory in Claude Code, Cursor or VS Code

claude mcp add mcp-external-memory -- uvx mcp-external-memory
Add to Cursor

What the publisher says

From the External Memory repository's README, as published. We do not edit it. Read it on GitHub

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

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 MEMORYEMBEDBACKEND 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

Nothing above is checked by us. What we check is on the safety report.

External Memory: common questions

Is External Memory MCP server safe?
Mostly: it is graded B (82/100). Read the External Memory safety report
How do I install External Memory?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does External Memory need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is External Memory maintained?
The last commit was 195 days ago (2026-04-21). The latest release is v0.1.2.
What can I use instead of External Memory?
Servers from other publishers that do the same job: State Memory MCP server and Knowl MCP server.
How does External Memory compare with other MCP servers?
safety score 82/100 (higher than 63% of 48,273 servers); tools 7 (the typical server has 7); tools that change things 29% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to External Memory

Same job from other publishers: the closest match first, then the best rated.

  • State Memory MCP
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  • Knowl
    Persistent memory for AI agents, for code, research and everyday life. Stale facts retire.
    A

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