MCP Queen
REMOTE · MCPQUEEN.COM · SCANNED SEP 21
The evidence layer for MCP: live operational grades plus Trust Receipts for every registry server.
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 Security74
- 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 is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- 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 Usability74
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 962 tokens (~137/item across 7 items; 7 tools + 0 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 Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage97
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 91% of tool parameters carry a description.Partial
- 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
- We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the MCP Queen server?
MCP Queen is a hosted endpoint at https://mcpqueen.com/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 · mcpqueen.com
claude mcp add --transport http com-mcpqueen-registry 'https://mcpqueen.com/mcp'
{
"mcpServers": {
"com-mcpqueen-registry": {
"url": "https://mcpqueen.com/mcp"
}
}
} {
"servers": {
"com-mcpqueen-registry": {
"type": "http",
"url": "https://mcpqueen.com/mcp"
}
}
} [mcp_servers.com-mcpqueen-registry] url = "https://mcpqueen.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-mcpqueen-registry": {
"type": "remote",
"url": "https://mcpqueen.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-mcpqueen-registry --url 'https://mcpqueen.com/mcp' --transport streamable-http
mcp_servers:
com-mcpqueen-registry:
url: "https://mcpqueen.com/mcp" {
"McpServers": {
"com-mcpqueen-registry": {
"Transport": "http",
"Url": "https://mcpqueen.com/mcp"
}
}
} assistant mcp add com-mcpqueen-registry -t streamable-http -u 'https://mcpqueen.com/mcp'
{
"mcpServers": {
"com-mcpqueen-registry": {
"type": "http",
"url": "https://mcpqueen.com/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.
- 26 Aug 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
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 24 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Aug 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
- 9 Aug 26 0
- The server rewrote its instructions, which are the text every model session reads security
- 7 Aug 26 0
- HTTPS: unverified → pass ▲ security
- 1 Aug 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
- 31 Jul 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
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 21 Sept 2026 · Probed https://mcpqueen.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mcpqueen.com | CN=WE1,O=Google Trust Services,C=US | 9 Sept 2026 | 8 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 73e48af206ebf5d40e0fc7ca4dcd1ba1 |
| SANs: mcpqueen.com, www.mcpqueen.com, *.www.mcpqueen.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 mcpqueen.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| mcpqueen.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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcpqueen.com/mcp | Verified | 200 | |
| http (plaintext) | http://mcpqueen.com/mcp | HTTPS enforced | 308 | https://mcpqueen.com/mcp |
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 →
get_server_grade Get Server Grade ~49
Get the full grade and verbatim probe evidence for one MCP server, by its official registry name (e.g. 'com.healthai/radar').
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | Registry server name |
| Name | Type | Req | Description |
|---|---|---|---|
| description | string|null | – | – |
| evidence | – | – | – |
| grade | string | yes | – |
| latency_ms | number|null | – | – |
| probed_at | string | yes | – |
| protocol_access | string|null | – | – |
| provisional | number|boolean | yes | – |
| reachable | number|boolean|null | – | – |
| remote_url | string|null | – | – |
| repo_url | string|null | – | – |
| score | number | yes | – |
| server_name | string | yes | – |
| tool_count | number|null | – | – |
| version | string|null | – | – |
No examples provided.
get_trust_receipt Get Trust Receipt ~67
Get one MCP server's complete evidence receipt: operational grade, deterministic security/data-integrity/citation/claim observations, and reviewed real-usage field reports. Missing observations are explicitly unaudited, never treated as a pass.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | Official registry server name |
| Name | Type | Req | Description |
|---|---|---|---|
| audit_state | string | yes | – |
| evidence_page | string | yes | – |
| interpretation | string | yes | – |
| observations | array | yes | – |
| response_benchmarks | array | yes | – |
| reviewed_field_reports | array | yes | – |
| safety_notice | string | yes | – |
| server | object | yes | – |
| trust_dimensions | array | yes | – |
No examples provided.
list_grades List Operational Grades ~68
List the top graded MCP servers from the mcpqueen registry (deterministic probe grades with evidence). Returns grade, score 0-100, latency, tool count and auth state per server.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | number | – | Max servers to return (default 25, max 100) |
| Name | Type | Req | Description |
|---|---|---|---|
| results | array | yes | – |
| returned | number | yes | – |
| safety_notice | string | yes | – |
No examples provided.
search_servers Search MCP Servers ~212
Search the MCP evidence registry using a natural multi-word task (e.g. 'reliable no-auth drug interaction server with citations'). Tokenizes and expands common synonyms, ranks metadata plus observed tool descriptions, and supports operational-grade/auth/latency/category filters. Use get_trust_receipt or search_trust_evidence for security, data, citation, claim, and response evidence.
| Name | Type | Req | Description |
|---|---|---|---|
| auth | string | – | Filter by authentication state (default any) |
| category | string | – | Optional category filter: Dev & Code, Data & Databases, Web & Search, AI & Agents, Finance & Crypto, Communication, Productivity, Security, Commerce, Media & Design, Cloud & Infra, Science & Health,… |
| limit | number | – | Max results (default 10, max 25) |
| max_latency_ms | number | – | Maximum measured initialize latency in milliseconds |
| minimum_grade | string | – | Worst acceptable live grade |
| query | string | yes | Keyword or task to search name/title/description for |
| Name | Type | Req | Description |
|---|---|---|---|
| feedback_reminder | string | yes | – |
| interpreted_terms | array | yes | – |
| message | string | – | – |
| results | array | yes | – |
| safety_notice | string | yes | – |
No examples provided.
search_tools Search MCP Tools ~229
Search across the actual tools that graded MCP servers expose (their tool names and descriptions, captured live from tools/list) — not just server metadata. Use this when you need a specific capability or data type, e.g. 'get weather', 'query postgres', 'device recall', 'FDA 510k'. Returns the matching tools with the server that offers each, its grade, and the remote endpoint so you can connect directly.
| Name | Type | Req | Description |
|---|---|---|---|
| auth | string | – | Filter by authentication state (default any) |
| category | string | – | Optional server-category filter: Dev & Code, Data & Databases, Web & Search, AI & Agents, Finance & Crypto, Communication, Productivity, Security, Commerce, Media & Design, Cloud & Infra, Science & H… |
| limit | number | – | Max matching tools (default 15, max 40) |
| max_latency_ms | number | – | Maximum measured initialize latency in milliseconds |
| minimum_grade | string | – | Worst acceptable live server grade |
| query | string | yes | Capability, data type, or keyword to match against tool names and descriptions |
| Name | Type | Req | Description |
|---|---|---|---|
| feedback_reminder | string | yes | – |
| interpreted_terms | array | yes | – |
| message | string | – | – |
| results | array | yes | – |
| safety_notice | string | yes | – |
No examples provided.
search_trust_evidence Search Trust Evidence ~119
Search published MCP trust evidence and reviewed real-usage field reports. Use for questions such as which servers expose citations, have access caveats, make unverifiable corpus claims, or show security concerns. Returns verbatim observations with dates and source type, not a synthetic trust score.
| Name | Type | Req | Description |
|---|---|---|---|
| dimension | string | – | – |
| limit | number | – | Max evidence items (default 20, max 50) |
| query | string | yes | Evidence, claim, source, capability, caveat, or server keyword |
| status | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| interpretation | string | yes | – |
| query | string | yes | – |
| results | array | yes | – |
| returned | number | yes | – |
| safety_notice | string | yes | – |
No examples provided.
submit_feedback Submit Field Report ~97
Submit a field report about an MCP server you have actually used (what worked, what failed, surprising behavior). Reports are quarantined for human review and never auto-published.
| Name | Type | Req | Description |
|---|---|---|---|
| agent_name | string | – | Optional: which agent/client is reporting |
| report | string | yes | The field report, 20-2000 chars, specific and factual |
| server_name | string | yes | Official registry name of the server the report is about |
| Name | Type | Req | Description |
|---|---|---|---|
| message | string | yes | – |
| safety_notice | string | yes | – |
| server_name | string | yes | – |
| status | string | yes | – |
No examples provided.
What is the MCP Queen server?
MCP Queen is listed in the public MCP registry as com.mcpqueen/registry. The evidence layer for MCP: live operational grades plus Trust Receipts for every registry server. This page covers its hosted endpoint (https://mcpqueen.com/mcp).
Is the MCP Queen server safe to use?
MCP Queen scores 83 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 MCP Queen server expose?
MCP Queen exposes 7 tools: search_servers, search_tools, list_grades, get_server_grade, get_trust_receipt, and 2 more. Their descriptions and schemas cost roughly 841 tokens of context every time the server is loaded.
Does the MCP Queen server require authentication?
No. We connected to MCP Queen without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the MCP Queen server still maintained?
MCP Queen is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.