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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.

16252servers indexed
7737remote 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)

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

#ServerGradeScoreLatencyToolsAuthProbed
1 ai.vibe-bi/mcp-server
Vibe BI MCP
Data & Databases
C prov. 66
288ms β€” auth-wellbehaved 07-12 18:16
2 ai.waystation/postgres
Data & Databases
C prov. 66
285ms β€” auth-wellbehaved 07-12 18:33
3 ai.waystation/supabase
Data & Databases
C prov. 66
276ms β€” auth-wellbehaved 07-12 18:33
4 app.elasticflow/mcp
Elasticflow
Data & Databases
C prov. 66
444ms β€” auth-wellbehaved 07-12 18:48
5 app.havnre/havn
HAVN
Data & Databases
C prov. 66
297ms β€” auth-wellbehaved 07-12 18:48
6 ai.eevy/mcp
Eevy
Data & Databases
C prov. 62
184ms β€” auth-wellbehaved 07-12 14:20
7 ai.fincontext/fincontext
Data & Databases
C prov. 62
344ms β€” auth-wellbehaved 07-12 14:31
8 ai.good-sport/good-sport
good-sport
Data & Databases
C prov. 62
78ms β€” auth-wellbehaved 07-12 14:31
9 ai.kubit/mcp-server
Kubit
Data & Databases
C prov. 62
866ms β€” auth-wellbehaved 07-12 14:46
10 ai.matih/mcp
Data & Databases
C prov. 62
1040ms β€” auth-wellbehaved 07-12 15:01
11 ai.sendinel/mcp-server
Sendinel
Data & Databases
C prov. 62
700ms β€” auth-wellbehaved 07-12 15:46
12 ai.sixta/sixta-connect
Data & Databases
C prov. 62
230ms β€” auth-wellbehaved 07-12 15:46
13 ai.statey/statey
Statey
Data & Databases
C prov. 62
339ms β€” auth-wellbehaved 07-12 17:47
14 app.qwady/borough
Borough NYC Real Estate API
Data & Databases
C prov. 62
730ms β€” auth-wellbehaved 07-12 19:18

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.