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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.

16246servers indexed
7735remote endpoints
742graded (rolling)
206grade A
68%reachable
384msmedian latency
SortBestWorstJust probedMost toolsFastest
GradeAllA (206)B (3)C (194)D (105)F (234)Provisional
CategoryAll categoriesOther (202)Web & Search (136)AI & Agents (127)Cloud & Infra (65)Productivity (42)Dev & Code (34)Data & Databases (28)Finance & Crypto (26)Communication (21)Media & Design (19)Commerce (17)Science & Health (13)Security (12)

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

#ServerGradeScoreLatencyToolsAuthProbed
1 ai.aient/mcp
Dev & Code
C prov. 66
257ms β€” auth-wellbehaved 07-12 14:18
2 ai.smithery/docfork-mcp
Dev & Code
C prov. 66
196ms β€” auth-wellbehaved 07-12 16:46
3 ai.smithery/Nekzus-npm-sentinel-mcp
Dev & Code
C prov. 66
240ms β€” auth-wellbehaved 07-12 16:16
4 ai.appdeploy/deploy-app
AppDeploy
Dev & Code
C prov. 62
250ms β€” auth-wellbehaved 07-12 14:18
5 ai.smithery/STUzhy-py_execute_mcp
Dev & Code
C prov. 62
274ms β€” auth-wellbehaved 07-12 16:16
6 app.bauta/bauta
Bauta
Dev & Code
C prov. 62
311ms β€” auth-wellbehaved 07-12 18:33
7 app.mashop/mcp
MaShop MCP
Dev & Code
C prov. 62
743ms β€” auth-wellbehaved 07-12 19:03
8 ai.alpic.mcp/alpic-mcp
Alpic
Dev & Code
D prov. 58
193ms β€” auth-wellbehaved 07-12 14:18
9 ai.simsense/mcp
SimSense
Dev & Code
D prov. 57
1056ms β€” auth-wellbehaved 07-12 15:46
10 ai.paperlantern/code
Paper Lantern
Dev & Code
D prov. 45
1605ms β€” auth-bare 07-12 15:16

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.