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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.

16258servers indexed
7739remote endpoints
892graded (rolling)
217grade A
59%reachable
388msmedian latency
SortBestWorstJust probedMost toolsFastest
GradeAllA (217)B (3)C (199)D (110)F (363)Provisional
CategoryAll categoriesAI & Agents (258)Other (209)Web & Search (138)Cloud & Infra (67)Productivity (44)Dev & Code (37)Data & Databases (29)Finance & Crypto (27)Communication (21)Media & Design (19)Commerce (17)Security (13)Science & Health (13)

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

#ServerGradeScoreLatencyToolsAuthProbed
1 ai.com.mcp/skills-search
Agent Skills Search Server
Web & Search
 F 15
 122ms — unreachable 07-12 14:19
2 ai.fiber/mcp
Fiber AI
Web & Search
 F 15
 241ms — unreachable 07-12 14:20
3 ai.radixia/blog
Web & Search
 F 15
 900ms — unreachable 07-12 15:31
4 ai.smithery/aamangeldi-dad-jokes-mcp
Web & Search
 F 15
 244ms — unreachable 07-12 16:16
5 ai.smithery/arjunkmrm-brave-search-mcp-server
Web & Search
 F 15
 237ms — unreachable 07-12 16:31
6 ai.smithery/arjunkmrm-clock
Web & Search
 F 15
 230ms — unreachable 07-12 16:31
7 ai.smithery/arjunkmrm-fetch
Web & Search
 F 15
 230ms — unreachable 07-12 16:31
8 ai.smithery/arjunkmrm-local001
Web & Search
 F 15
 240ms — unreachable 07-12 16:31
9 ai.smithery/arjunkmrm-scrapermcp_el
Web & Search
 F 15
 233ms — unreachable 07-12 16:31
10 ai.smithery/arjunkmrm-watch2
Web & Search
 F 15
 231ms — unreachable 07-12 16:31
11 ai.smithery/aryankeluskar-poke-video-mcp
Web & Search
 F 15
 248ms — unreachable 07-12 16:31
12 ai.smithery/BadRooBot-test_m
Web & Search
 F 15
 287ms — unreachable 07-12 16:01
13 ai.smithery/BigVik193-reddit-ads-mcp-test
Web & Search
 F 15
 249ms — unreachable 07-12 16:01
14 ai.smithery/BigVik193-reddit-user-mcp
Web & Search
 F 15
 231ms — unreachable 07-12 16:01
15 ai.smithery/blacklotusdev8-test_m
Web & Search
 F 15
 266ms — unreachable 07-12 16:46
16 ai.smithery/browserbasehq-mcp-browserbase
Web & Search
 F 15
 230ms — unreachable 07-12 16:46
17 ai.smithery/ChiR24-unreal_mcp
Web & Search
 F 15
 233ms — unreachable 07-12 16:01
18 ai.smithery/cindyloo-dropbox-mcp-server
Web & Search
 F 15
 245ms — unreachable 07-12 16:46
19 ai.smithery/IlyaGusev-academia_mcp
Web & Search
 F 15
 244ms — unreachable 07-12 16:01
20 ai.smithery/ImRonAI-mcp-server-browserbase
Web & Search
 F 15
 261ms — unreachable 07-12 16:01
21 ai.smithery/jjlabsio-korea-stock-mcp
Web & Search
 F 15
 239ms — unreachable 07-12 17:03
22 ai.smithery/kesslerio-attio-mcp-server-beta
Web & Search
 F 15
 224ms — unreachable 07-12 17:03
23 ai.smithery/leandrogavidia-vechain-mcp-server
Web & Search
 F 15
 259ms — unreachable 07-12 17:16
24 ai.smithery/lineex-pubmed-mcp-smithery
Web & Search
 F 15
 229ms — unreachable 07-12 17:16
25 ai.smithery/luminati-io-brightdata-mcp
Web & Search
 F 15
 255ms — unreachable 07-12 17:16
26 ai.smithery/pythondev-pro-egw_writings_mcp_server
Web & Search
 F 15
 229ms — unreachable 07-12 17:16
27 ai.smithery/rainbowgore-stealthee-mcp-tools
Web & Search
 F 15
 270ms — unreachable 07-12 17:16
28 ai.smithery/sebastianall1977-gmail-mcp
Web & Search
 F 15
 243ms — unreachable 07-12 17:32
29 ai.smithery/serkan-ozal-driflyte-mcp-server
Web & Search
 F 15
 224ms — unreachable 07-12 17:32
30 ai.smithery/sunub-obsidian-mcp-server
Web & Search
 F 15
 231ms — unreachable 07-12 17:32
31 ai.xurprise/mcp
xurprise
Web & Search
 F 15
 20ms — unreachable 07-12 18:33
32 app.papertext.app/papertext-mcp
Papertext
Web & Search
 F 15
 74ms — unreachable 07-12 19:18
33 ai.nordax/mcp
Nordax AI Entity Network
Web & Search
 F 12
 1238ms — unreachable 07-12 15:01
34 ai.obaron/aeo
Web & Search
 F 12
 33ms — unreachable 07-12 15:01
35 ai.seocrawl/mcp
SEOcrawl AI
Web & Search
 F 12
 699ms — unreachable 07-12 15:46
36 ai.shawndurrani/mcp-merchant
Web & Search
 F 12
 82ms — unreachable 07-12 15:46
37 ai.shawndurrani/mcp-registry
Web & Search
 F 12
 49ms — unreachable 07-12 15:46
38 ai.smithery/kaszek-kaszek-attio-mcp
Web & Search
 F 12
 224ms — unreachable 07-12 17:03
39 ai.smithery/yuhuison-mediawiki-mcp-server-auth
Web & Search
 F 12
 231ms — unreachable 07-12 17:32
40 app.vercel.agent-svg-registry/mcp
Agent SVG Registry
Web & Search
 F 12
 75ms — unreachable 07-12 19:31

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.