# MemoStem (remote · www.memostem.com)

Your reviewed knowledge, across AI conversations.

- Trust score: 70/100 (medium)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-29

## Components

- remote · `www.memostem.com`: 70/100 (this document), [markdown](https://verifymcp.io/servers/girapphe-memostem/api-mcp.md), [page](https://verifymcp.io/servers/girapphe-memostem/api-mcp)

## Channel facts

- Endpoint: `https://www.memostem.com/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.6.2`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-29.

- **Endpoint Security**: 69/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 66/100
  - 50% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1324 tokens (~110/item across 12 items; 10 tools + 2 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 37/100
  - Stability observed for 11 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.
  - An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).
  - Supports UI / widget rendering.

## Install

### How do I install the MemoStem MCP server?

MemoStem is a hosted endpoint at https://www.memostem.com/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http girapphe-memostem 'https://www.memostem.com/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "girapphe-memostem": {
      "url": "https://www.memostem.com/api/mcp"
    }
  }
}
```

### VS Code

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

### Codex

```toml
[mcp_servers.girapphe-memostem]
url = "https://www.memostem.com/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "girapphe-memostem": {
      "type": "remote",
      "url": "https://www.memostem.com/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add girapphe-memostem --url 'https://www.memostem.com/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  girapphe-memostem:
    url: "https://www.memostem.com/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "girapphe-memostem": {
      "Transport": "http",
      "Url": "https://www.memostem.com/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add girapphe-memostem -t streamable-http -u 'https://www.memostem.com/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "girapphe-memostem": {
      "type": "http",
      "url": "https://www.memostem.com/api/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-28 (score 70, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-26 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-25 (score 68, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-23 (score 68, −2)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional regression] Schema quality: 920 → 1324
- [functional regression] Schema quality: 100% → 50%
- [functional improvement] Schema quality: fail → pass
- [functional] First check of Capabilities: pass
- [functional] New resource “MemoStem getting started”
- [functional] New tool “refresh_guest_knowledge_shelf_link”
- [functional] New tool “connect_memostem”
- [functional] New tool “start_memostem”

### 2026-09-21 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-19 (score 69, +2)

- [functional improvement] Schema quality: 128 → 115
- [functional improvement] Stability: unverified → 0.03
- [functional improvement] Schema quality: unverified → 100
- [functional] The server now declares the “resources” capability
- [functional] Schema quality: excellent → good
- [functional] New resource “MemoStem knowledge candidate picker”

### 2026-09-18 (score 67, +34)

- [security regression] Authorization: pass → partial
- [security improvement] Transport: unverified → pass
- [security improvement] Injection markers: unverified → pass
- [security] First check of Judged manipulation: pass
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Tool coverage: 0
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: excellent
- [functional] First check of Schema quality: fail
- [functional] First check of Destructive annotations: 100
- [functional] First check of Tool coverage: 100

### 2026-09-15 (score 33)

First indexed and scored.

## MCP tools (10)

### `start_memostem` (~64 tokens)

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.

Input parameters:

- `cursor`
- `locale` (string)

Output parameters:

- `locale` (string)
- `next_cursor`
- `status` (string)
- `topics` (array)

### `connect_memostem` (~49 tokens)

Connect MemoStem and show topics

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.

Input parameters:

- `cursor`
- `locale` (string)

Output parameters:

- `locale` (string)
- `next_cursor`
- `status` (string)
- `topics` (array)

### `validate_knowledge_bundle` (~97 tokens)

Validate one 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, personal or organization-specific memory, and unsupported knowledge types.

Input parameters:

- `bundles` (array, required)
- `provenance` (object, required)
- `provider` (string, required)
- `request_id` (string, required)

Output parameters:

- `bundle_count` (number)
- `knowledge_type` (string)
- `persisted` (boolean)
- `status` (string)
- `title` (string)

### `save_guest_knowledge_bundles` (~135 tokens)

Save knowledge to a temporary guest shelf

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.

Input parameters:

- `bundles` (array, required)
- `provenance` (object, required)
- `provider` (string, required)
- `request_id` (string, required)
- `workspace_token` (string)

Output parameters:

- `accepted_bundle_count` (integer)
- `account_required` (boolean)
- `card_count` (integer)
- `card_limit` (number)
- `expires_at` (string)
- `persisted` (boolean)
- `remaining_capacity` (integer)
- `review_url` (string)
- `status` (string)
- `workspace_token` (string)

### `refresh_guest_knowledge_shelf_link` (~84 tokens)

Get a fresh guest 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.

Input parameters:

- `workspace_token` (string, required)

Output parameters:

- `card_count` (integer)
- `card_limit` (number)
- `expires_at` (string)
- `review_url` (string)
- `status` (string)

### `claim_guest_knowledge_workspace` (~65 tokens)

Connect and keep a guest knowledge shelf

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.

Input parameters:

- `workspace_token` (string, required)

Output parameters:

- `claimed_draft_count` (integer)
- `review_path` (string)
- `status` (string)

### `preview_knowledge_bundle` (~109 tokens)

Preview one 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.

Input parameters:

- `bundles` (array, required)
- `provenance` (object, required)
- `provider` (string, required)
- `request_id` (string, required)

Output parameters:

- `bundle_count` (number)
- `knowledge_type` (string)
- `persisted` (boolean)
- `status` (string)
- `title` (string)

### `check_memostem_connection` (~35 tokens)

Check MemoStem connection

Verify the authenticated MemoStem connection and report only the currently granted knowledge permissions. This test does not read or write knowledge.

Output parameters:

- `draft_review_path` (string)
- `granted_scopes` (array)
- `settings_path` (string)
- `status` (string)

### `create_card_drafts` (~146 tokens)

Create knowledge-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.

Input parameters:

- `cards` (array, required)
- `provenance` (object, required)
- `provider` (string, required)
- `request_id` (string, required)

Output parameters:

- `batch_id` (string)
- `created` (boolean)
- `draft_count` (integer)
- `review_path` (string)
- `review_url` (string)
- `status` (string)

### `create_knowledge_bundle_drafts` (~131 tokens)

Create structured 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.

Input parameters:

- `bundles` (array, required)
- `provenance` (object, required)
- `provider` (string, required)
- `request_id` (string, required)

Output parameters:

- `batch_id` (string)
- `bundle_count` (integer)
- `created` (boolean)
- `review_path` (string)
- `review_url` (string)
- `status` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/girapphe-memostem/api-mcp#diagnostics

## Score history

- 2026-09-29: 70
- 2026-09-28: 70
- 2026-09-27: 69
- 2026-09-26: 69
- 2026-09-25: 68
- 2026-09-24: 68
- 2026-09-23: 68
- 2026-09-22: 70
- 2026-09-21: 70
- 2026-09-20: 69
- 2026-09-19: 69
- 2026-09-18: 67
- 2026-09-17: 33
- 2026-09-16: 33
- 2026-09-15: 33

## Common questions

### What is the MemoStem MCP server?

MemoStem is an MCP server listed in the public MCP registry as io.github.girapphe/memostem. Your reviewed knowledge, across AI conversations. This page covers its hosted endpoint (https://www.memostem.com/api/mcp).

### Is the MemoStem MCP server safe to use?

MemoStem scores 70 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the MemoStem MCP server expose?

MemoStem exposes 10 tools: start_memostem, connect_memostem, validate_knowledge_bundle, save_guest_knowledge_bundles, refresh_guest_knowledge_shelf_link, and 5 more. Their descriptions and schemas cost roughly 915 tokens of context every time the server is loaded.

### Does the MemoStem MCP server require authentication?

No. We connected to MemoStem without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the MemoStem MCP server still maintained?

MemoStem is still listed as active in the MCP registry. We last reached this channel on 29 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://www.memostem.com/api/mcp
- Repository: https://github.com/girapphe/memostem-plugins
- Changelog RSS feed: https://verifymcp.io/servers/girapphe-memostem/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/girapphe-memostem/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/girapphe-memostem/api-mcp