MemoStem
REMOTE · WWW.MEMOSTEM.COM · SCANNED SEP 28
Your reviewed knowledge, across AI conversations.
Available components
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. How we score → Why this is hard to score →
Endpoint Security69
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability66
- 50% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Partial
- AI-judged instruction clarity (good).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management33
- Stability observed for 10 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
- Supports UI / widget rendering.Pass
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.
remote · www.memostem.com
claude mcp add --transport http girapphe-memostem 'https://www.memostem.com/api/mcp'
{
"mcpServers": {
"girapphe-memostem": {
"url": "https://www.memostem.com/api/mcp"
}
}
} {
"servers": {
"girapphe-memostem": {
"type": "http",
"url": "https://www.memostem.com/api/mcp"
}
}
} [mcp_servers.girapphe-memostem] url = "https://www.memostem.com/api/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"girapphe-memostem": {
"type": "remote",
"url": "https://www.memostem.com/api/mcp",
"enabled": true
}
}
} openclaw mcp add girapphe-memostem --url 'https://www.memostem.com/api/mcp' --transport streamable-http
mcp_servers:
girapphe-memostem:
url: "https://www.memostem.com/api/mcp" {
"McpServers": {
"girapphe-memostem": {
"Transport": "http",
"Url": "https://www.memostem.com/api/mcp"
}
}
} assistant mcp add girapphe-memostem -t streamable-http -u 'https://www.memostem.com/api/mcp'
{
"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.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 28 Sept 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 26 Sept 26 +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.
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 23 Sept 26 −2
- The server rewrote its instructions, which are the text every model session reads security
- Schema quality: 920 → 1324 ▼ functional
- Schema quality: 100% → 50% ▼ functional
- 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” functional
- 21 Sept 26 +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.
- 19 Sept 26 +2
- Schema quality: 128 → 115 ▲ functional
- Stability: unverified → 0.03 ▲ functional
- Schema quality: unverified → 100 ▲ functional
- The server now declares the “resources” capability functional
- Schema quality: excellent → good functional
- New resource “MemoStem knowledge candidate picker” functional
- 18 Sept 26 +34
- Authorization: pass → partial ▼ security
- Transport: unverified → pass ▲ security
- Injection markers: unverified → pass ▲ security
- First check of Judged manipulation: pass security
- MCP protocol: unverified → pass ▲ functional
- 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 functional
- 15 Sept 26 33
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 28 Sept 2026 · Probed https://www.memostem.com/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=memostem.com | CN=WE1,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d1ea4765832d72a313e475b932ca2e1a |
| SANs: memostem.com, www.memostem.com, *.www.memostem.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of www.memostem.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| memostem.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000; includeSubDomains; preload |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://www.memostem.com/api/mcp | Verified | 200 | |
| http (plaintext) | http://www.memostem.com/api/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
check_memostem_connection Check MemoStem connection ~35
Verify the authenticated MemoStem connection and report only the currently granted knowledge permissions. This test does not read or write knowledge.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| draft_review_path | string | yes | – |
| granted_scopes | array | yes | – |
| settings_path | string | yes | – |
| status | string | yes | – |
No examples provided.
claim_guest_knowledge_workspace Connect and keep a guest knowledge shelf ~65
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.
| Name | Type | Req | Description |
|---|---|---|---|
| workspace_token | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| claimed_draft_count | integer | yes | – |
| review_path | string | yes | – |
| status | string | yes | – |
No examples provided.
connect_memostem Connect MemoStem and show topics ~49
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.
| Name | Type | Req | Description |
|---|---|---|---|
| cursor | – | – | – |
| locale | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| locale | string | yes | – |
| next_cursor | – | yes | – |
| status | string | yes | – |
| topics | array | yes | – |
No examples provided.
create_card_drafts Create knowledge-card drafts ~146
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.
| Name | Type | Req | Description |
|---|---|---|---|
| cards | array | yes | – |
| provenance | object | yes | – |
| provider | string | yes | – |
| request_id | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| batch_id | string | yes | – |
| created | boolean | yes | – |
| draft_count | integer | yes | – |
| review_path | string | yes | – |
| review_url | string | yes | – |
| status | string | yes | – |
No examples provided.
create_knowledge_bundle_drafts Create structured knowledge-bundle drafts ~131
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.
| Name | Type | Req | Description |
|---|---|---|---|
| bundles | array | yes | – |
| provenance | object | yes | – |
| provider | string | yes | – |
| request_id | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| batch_id | string | yes | – |
| bundle_count | integer | yes | – |
| created | boolean | yes | – |
| review_path | string | yes | – |
| review_url | string | yes | – |
| status | string | yes | – |
No examples provided.
preview_knowledge_bundle Preview one knowledge bundle ~109
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.
| Name | Type | Req | Description |
|---|---|---|---|
| bundles | array | yes | – |
| provenance | object | yes | – |
| provider | string | yes | – |
| request_id | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| bundle_count | number | yes | – |
| knowledge_type | string | yes | – |
| persisted | boolean | yes | – |
| status | string | yes | – |
| title | string | yes | – |
No examples provided.
refresh_guest_knowledge_shelf_link Get a fresh guest shelf link ~84
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.
| Name | Type | Req | Description |
|---|---|---|---|
| workspace_token | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| card_count | integer | yes | – |
| card_limit | number | yes | – |
| expires_at | string | yes | – |
| review_url | string | yes | – |
| status | string | yes | – |
No examples provided.
save_guest_knowledge_bundles Save knowledge to a temporary guest shelf ~135
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.
| Name | Type | Req | Description |
|---|---|---|---|
| bundles | array | yes | – |
| provenance | object | yes | – |
| provider | string | yes | – |
| request_id | string | yes | – |
| workspace_token | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| accepted_bundle_count | integer | yes | – |
| account_required | boolean | yes | – |
| card_count | integer | yes | – |
| card_limit | number | yes | – |
| expires_at | string | yes | – |
| persisted | boolean | yes | – |
| remaining_capacity | integer | yes | – |
| review_url | string | yes | – |
| status | string | yes | – |
| workspace_token | string | yes | – |
No examples provided.
start_memostem Start MemoStem ~64
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.
| Name | Type | Req | Description |
|---|---|---|---|
| cursor | – | – | – |
| locale | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| locale | string | yes | – |
| next_cursor | – | yes | – |
| status | string | yes | – |
| topics | array | yes | – |
No examples provided.
validate_knowledge_bundle Validate one knowledge bundle ~97
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.
| Name | Type | Req | Description |
|---|---|---|---|
| bundles | array | yes | – |
| provenance | object | yes | – |
| provider | string | yes | – |
| request_id | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| bundle_count | number | yes | – |
| knowledge_type | string | yes | – |
| persisted | boolean | yes | – |
| status | string | yes | – |
| title | string | yes | – |
No examples provided.
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 28 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.