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MCP QUEEN

The Graded Registry

Every remote server in the official MCP registry, probed live and graded with receipts β€” the only MCP index where every grade shows its evidence.

16258servers indexed
7739remote endpoints
862graded (rolling)
208grade A
60%reachable
385msmedian latency
SortBestWorstJust probedMost toolsFastest
GradeAllA (208)B (3)C (198)D (107)F (346)Provisional
CategoryAll categoriesAI & Agents (239)Other (204)Web & Search (137)Cloud & Infra (65)Productivity (43)Dev & Code (35)Data & Databases (29)Finance & Crypto (27)Communication (21)Media & Design (19)Commerce (17)Security (13)Science & Health (13)

2 matches. Categories are keyword-derived from registry metadata β€” imperfect by design, deterministic by principle.

#ServerGradeScoreLatencyToolsAuthProbed
1 ai.thinkneo/control-plane
ThinkNEO Control Plane
Security
A 97
772ms 68 open 07-12 17:47
2 app.eurocomply/compliance
EuroComply β€” EU Regulatory Compliance
Security
A 97
262ms 4 open 07-12 18:48

Methodology

Each server is probed live over streamable HTTP: reachability (25) β€” does initialize succeed; auth-gated servers earn partial credit only if they advertise WWW-Authenticate so clients can discover OAuth. protocol (15) β€” valid JSON-RPC handshake; deprecated SSE transport is penalized. tooling (35) β€” tools/list works, share of tools with descriptions and fully-typed input schemas, median description depth. latency (10) β€” initialize round-trip. provenance (15) β€” 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 β€” probes only.