MemoStem MCP Server

by girapphe Your server? Claim it

answering

MemoStem is answering right now. Last checked 8 min ago. It exposes 11 tools. Last commit 6 Nov 2026.

Your reviewed knowledge, across AI conversations.

Uptime history 53 days of history · worst day 92%

53 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

1113 ms

Response time

average over 24h

Stars

last commit 6 Nov 2026

What changed 19

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 18 September 2026. No other catalogue keeps this.

6 Nov a tool appeared browse_memostem_cards

19 Oct a tool description was rewritten check_memostem_connection

16 Oct 4 tools changed the parameters they ask for create_card_drafts, create_knowledge_bundle_drafts, preview_knowledge_bundle and 1 more

3 Oct a tool description was rewritten validate_knowledge_bundle

23 Sep 3 tools changed the parameters they ask for create_knowledge_bundle_drafts, preview_knowledge_bundle, validate_knowledge_bundle

23 Sep a tool appeared refresh_guest_knowledge_shelf_link

22 Sep 2 tools appeared connect_memostem, start_memostem

21 Sep 3 tools changed the parameters they ask for create_knowledge_bundle_drafts, preview_knowledge_bundle, validate_knowledge_bundle

18 Sep 3 tools changed the parameters they ask for create_knowledge_bundle_drafts, preview_knowledge_bundle, validate_knowledge_bundle

Nothing serious here today

Today is the operative word: we check MemoStem every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add memostem --transport http https://www.memostem.com/api/mcp

Settings → Connectors → Add custom connector, then paste this address

https://www.memostem.com/api/mcp

~/.codex/config.toml

[mcp_servers.memostem]
url = "https://www.memostem.com/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "memostem": {
      "url": "https://www.memostem.com/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "memostem": {
      "type": "http",
      "url": "https://www.memostem.com/api/mcp"
    }
  }
}

Available tools 11

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

browse

browse_memostem_cards

Browse or search the connected owner’s active approved knowledge cards. Open a card for its details. This does not create or change knowledge.

card

create_card_drafts

Create pending, user-owned general-knowledge card drafts only after clear affirmative consent to specifically named, independently teachable knowledge in the current conversation. Every card must declare knowledge_scope as general_knowledge. Personal or company decisions, product principles or policies, pricing rationale, preferences, plans, tasks, reminders, meeting outcomes, project status, and autobiographical facts are ineligible. An assistant suggestion alone is not consent. This tool never accepts raw transcripts or historical-conversation data, and it cannot approve, publish, or modify public knowledge cards.

claim

claim_guest_knowledge_workspace

Transfer the temporary guest shelf identified by workspace_token to the authenticated MemoStem owner as private pending drafts. Call only after the person explicitly agrees to connect or after the guest shelf reports account_required. This tool never approves or publishes cards.

connect

connect_memostem

Connect or grant knowledge read permission through the host OAuth flow, then show a page of the authenticated owner's topic labels. Never creates knowledge.

knowledge

create_knowledge_bundle_drafts

Create pending, user-owned concept, general procedure, comparison, mechanism, structure, claim/evidence, knowledge question, historical event, or language-expression drafts only after clear affirmative consent to specifically named, independently teachable general knowledge in the current conversation. Every bundle must declare knowledge_scope as general_knowledge; decisions and organization-specific material are not accepted. An assistant suggestion alone is not consent. It cannot approve drafts, retain transcripts, or modify public knowledge.

memostem

check_memostem_connection

Verify the MemoStem connection and report only the currently granted knowledge permissions. Without an account it reports status guest with no permissions, and the temporary guest shelf stays available. This test does not read or write knowledge.

preview

preview_knowledge_bundle

Return a transient preview of exactly one user-selected, independently teachable general-knowledge bundle without an account and without saving it. Call only at the person's direct request or after clear acceptance of a specific preview proposal. Use save_guest_knowledge_bundles only after the person explicitly asks to keep it; connected clients use create_knowledge_bundle_drafts.

refresh

refresh_guest_knowledge_shelf_link

Issue a new short-lived, one-time mobile or desktop web link for the existing guest shelf. Use only when the person asks to open or recover that shelf. Pass the private workspace_token as a tool argument; never show or put it in a URL. This adds no card and makes the previous view link invalid.

save

save_guest_knowledge_bundles

Store one to 10 specifically selected, independently teachable general-knowledge bundles from the current conversation in a private temporary MemoStem guest shelf. Call only after a direct request or clear acceptance of a specific proposal. Reuse workspace_token to continue the same shelf, but never reveal that credential to the person. The shelf is read-only in MemoStem, expires after 90 days, and requires account connection at 10 cards.

start

start_memostem

Start MemoStem when no topic is named. Show a localized welcome App before login, or the connected owner's topic labels and empty-state guidance. Pass the conversation language as locale when known. No drafts are created.

validate

validate_knowledge_bundle

Validate exactly one user-selected, independently teachable general-knowledge bundle without an account and without saving it. Call only at the person's direct request or after clear acceptance of a specific preview proposal. The strict input rejects transcripts, conversation histories, and unsupported knowledge types; phrases that may be personal or organization-specific are returned as review_flags.

Endpoints

URL	Transport	State	Latency	Checked
https://www.memostem.com/api/mcp	streamable-http	answering	1383 ms	8 min ago

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MemoStem — questions

Answers built from our own checks of this server.

What can MemoStem do?

It exposes 11 tools, read directly from the server on our last check. Among them: browse_memostem_cards, check_memostem_connection, claim_guest_knowledge_workspace, connect_memostem, create_card_drafts, create_knowledge_bundle_drafts and 5 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is MemoStem working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 1113 ms. The bar chart above shows every period we have measured.

How do I connect MemoStem?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does MemoStem need an API key?

No. MemoStem completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 11 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is MemoStem?

It answers our handshake in 1113 ms on average, which is faster than 3% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is MemoStem open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 7 open issues. The licence covers the code in the repository, not the hosted service at memostem.com, which runs on its operator's own terms.