👑

MCP QUEEN

The Graded Registry

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

16245servers indexed
7735remote endpoints
622graded (rolling)
160grade A
64%reachable
361msmedian latency
SortBestWorstJust probedMost toolsFastest
GradeAllA (160)B (2)C (156)D (81)F (223)Provisional
CategoryAll categoriesOther (181)Web & Search (114)AI & Agents (109)Cloud & Infra (55)Dev & Code (29)Productivity (26)Finance & Crypto (23)Data & Databases (21)Commerce (15)Media & Design (15)Communication (14)Science & Health (12)Security (8)

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

#ServerGradeScoreLatencyToolsAuthProbed
1 ai.borealhost/mcp
BorealHost
Dev & Code
 A 100
 87ms 95 open 07-12 14:19
2 ai.dataecho/mcp
Dev & Code
 A 100
 384ms 26 open 07-12 14:19
3 ai.exa/exa
Dev & Code
 A 100
 103ms 2 open 07-12 14:20
4 ai.bringyour/bringyour
Bring Your AI
Dev & Code
 A 97
 146ms 7 open 07-12 14:19
5 ai.example4/xmp4
xmp4 — Semantic code knowledge for your stack
Dev & Code
 A 97
 502ms 16 open 07-12 14:20
6 ai.quantifyme/quantifyme
Dev & Code
 A 94
 621ms 11 open 07-12 15:31
7 ai.aient/mcp
Dev & Code
 C prov. 66
 257ms — auth-wellbehaved 07-12 14:18
8 ai.smithery/docfork-mcp
Dev & Code
 C prov. 66
 196ms — auth-wellbehaved 07-12 16:46
9 ai.smithery/Nekzus-npm-sentinel-mcp
Dev & Code
 C prov. 66
 240ms — auth-wellbehaved 07-12 16:16
10 ai.appdeploy/deploy-app
AppDeploy
Dev & Code
 C prov. 62
 250ms — auth-wellbehaved 07-12 14:18
11 ai.smithery/STUzhy-py_execute_mcp
Dev & Code
 C prov. 62
 274ms — auth-wellbehaved 07-12 16:16
12 ai.synlake/synlake
Synlake
Dev & Code
 C 62
 325ms — open 07-12 17:47
13 ai.trendsmcp/npm
npm Trends MCP
Dev & Code
 C 62
 300ms — open 07-12 18:02
14 ai.trendsmcp/trends
Trends MCP
Dev & Code
 C 62
 293ms — open 07-12 18:02
15 ai.alpic.mcp/alpic-mcp
Alpic
Dev & Code
 D prov. 58
 193ms — auth-wellbehaved 07-12 14:18
16 ai.simsense/mcp
SimSense
Dev & Code
 D prov. 57
 1056ms — auth-wellbehaved 07-12 15:46
17 ai.paperlantern/code
Paper Lantern
Dev & Code
 D prov. 45
 1605ms — auth-bare 07-12 15:16
18 ai.smithery/arjunkmrm-sg-bus-test
Dev & Code
 F 15
 227ms — unreachable 07-12 16:31
19 ai.smithery/cuongpo-coti-mcp
Dev & Code
 F 15
 241ms — unreachable 07-12 16:46
20 ai.smithery/cuongpo-coti-mcp-1
Dev & Code
 F 15
 245ms — unreachable 07-12 16:46
21 ai.smithery/Hint-Services-obsidian-github-mcp
Dev & Code
 F 15
 234ms — unreachable 07-12 16:01
22 ai.smithery/mayla-debug-mcp-google-calendar2
Dev & Code
 F 15
 236ms — unreachable 07-12 17:16
23 ai.smithery/neverinfamous-memory-journal-mcp
Dev & Code
 F 15
 257ms — unreachable 07-12 17:16
24 ai.smithery/renCosta2025-context7fork
Dev & Code
 F 15
 264ms — unreachable 07-12 17:32
25 ai.smithery/saidsef-mcp-github-pr-issue-analyser
Dev & Code
 F 15
 566ms — unreachable 07-12 17:32
26 ai.smithery/smithery-ai-cookbook-ts-smithery-cli
Dev & Code
 F 15
 223ms — unreachable 07-12 17:32
27 ai.smithery/smithery-ai-github
Dev & Code
 F 15
 234ms — unreachable 07-12 17:32
28 ai.smithery/exa-labs-exa-code-mcp
Dev & Code
 F 13
 256ms — unreachable 07-12 16:46
29 ai.simstim/mcp
SimStim
Dev & Code
 F 12
 29ms — unreachable 07-12 15:46

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.