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MCP QUEEN

The MCP Evidence Registry

Operational grades show whether a server connects and describes usable tools. Separate Trust Receipts show what has actually been observed about security and access boundaries, data integrity, citations, advertised claims, response quality, and real-world use.

Use MCP Queen in ChatGPT, Claude, or my agentWhy this registry is different
25555servers indexed
14074remote endpoints
14142graded (rolling)
20222trust observations
4response audits
650grade A
70%reachable
239msmedian latency
SortBestWorstJust probedMost toolsFastest
GradeAllA (650)B (12)C (523)D (202)F (613)Provisional
CategoryAll categoriesOther (516)AI & Agents (353)Cloud & Infra (259)Web & Search (252)Finance & Crypto (145)Productivity (78)Dev & Code (69)Data & Databases (65)Science & Health (58)Communication (55)Commerce (54)Media & Design (52)Security (44)

9 matches. Categories are keyword-derived from registry metadata — imperfect by design, deterministic by principle.

#ServerGradeScoreLatencyToolsProtocol accessProbed
1 ai.ambix/ambix
Ambix
Commerce
C prov. 66
371ms auth-wellbehaved 08-25 14:30
2 ai.vortexiq/vortex-iq
Commerce
C prov. 66
328ms auth-wellbehaved 08-26 01:15
3 com.jumpseller/admin-mcp
Jumpseller
Commerce
C prov. 66
188ms auth-wellbehaved 08-26 14:45
4 ai.trendsmcp/ecommerce
Ecommerce Trends MCP
Commerce
C 65
168ms open 08-26 00:45
5 ai.kive/mcp
Kive
Commerce
C prov. 62
194ms auth-wellbehaved 08-25 16:45
6 ai.trendsmcp/app-store
App Store Trends MCP
Commerce
C 62
780ms open 08-26 00:45
7 com.cerebrochain/cerebrochain
CerebroChain
Commerce
C prov. 62
348ms auth-wellbehaved 08-26 08:30
8 com.longbridge/mcp
Commerce
C prov. 62
720ms auth-wellbehaved 08-26 15:30
9 com.lowvyn/mcp
Lowvyn
Commerce
C 62
234ms open 08-26 15:30

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Compare MCP servers by use case

Evidence-backed shortlists for high-intent decisions—not generated pages for every keyword.

Data & DatabasesWeb & SearchScience & HealthFinance & CryptoDev & Code Security & trust evidence

Methodology

Each server is probed live over streamable HTTP: reachability (25) — does initialize succeed; auth-gated servers earn partial credit only if they advertise WWW-Authenticate so clients can discover OAuth. protocol (15) — valid JSON-RPC handshake; deprecated SSE transport is penalized. tooling (35) — tools/list works, share of tools with descriptions and fully-typed input schemas, median description depth. latency (10) — initialize round-trip. provenance (15) — registry metadata completeness and whether the reverse-DNS namespace actually matches the serving domain. Scores scale to what is verifiable; unverifiable dimensions mark the grade provisional rather than guessing. Every point carries the verbatim observation that earned it. No stars, no votes, no pay-to-rank — probes only.

Trust Receipts are separate from the operational grade. Discovery records advertised security-sensitive capabilities, access caveats, citation promises, and corpus-size claims. Safe, read-only response audits sample eligible tools and test whether calls are usable, whether returned PMIDs/DOIs resolve against authoritative sources, and whether an apparently successful response actually contains an upstream error. Every observation includes its date, source type, sample size where applicable, and methodology version. No synthetic trust score is assigned, and absence of an observation means unaudited—not safe.

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