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MCP QUEEN

Name: MCP Queen graded registry
Creator: MCP Queen
License: https://mcpqueen.com/registry#methodology

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

SortBest Worst Just probed Most tools Fastest

GradeAll A (160)B (2)C (156)D (81)F (223)Provisional

CategoryAll categories Other (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)

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

#	Server	Grade	Score	Latency	Tools	Auth	Probed
1	ai.byteask/embedded-docs Productivity	A	100	465ms	3	open	07-12 14:19
2	ai.auteng/docs AutEng MCP - Markdown Publishing & Document Share Links Productivity	A	97	413ms	7	open	07-12 14:18
3	ai.spala/public-mcp Spala Public MCP Productivity	A	94	618ms	11	open	07-12 17:47
4	ai.parallel/task-mcp Parallel Task MCP Productivity	C prov.	66	48ms	—	auth-wellbehaved	07-12 15:16
5	ai.smithery/smithery-notion Productivity	C prov.	66	185ms	—	auth-wellbehaved	07-12 17:32
6	ai.waystation/jira Productivity	C prov.	66	272ms	—	auth-wellbehaved	07-12 18:16
7	ai.cirra/salesforce-mcp Cirra AI Salesforce Admin MCP Server Productivity	C prov.	62	45ms	—	auth-wellbehaved	07-12 14:19
8	ai.threadminder/threadminder Threadminder Productivity	D prov.	49	504ms	—	auth-bare	07-12 18:02
9	ai.biel/biel-ai Biel.ai Productivity	F	15	70ms	—	unreachable	07-12 14:18
10	ai.cosmonote/notes Cosmonote Productivity	F	15	302ms	—	unreachable	07-12 14:19
11	ai.smithery/Aman-Amith-Shastry-scientific_computation_mcp Productivity	F	15	595ms	—	unreachable	07-12 16:01
12	ai.smithery/bergeramit-bergeramit-hw3-tech Productivity	F	15	241ms	—	unreachable	07-12 16:31
13	ai.smithery/ctaylor86-mcp-video-download-server Productivity	F	15	245ms	—	unreachable	07-12 16:46
14	ai.smithery/FelixYifeiWang-felix-mcp-smithery Productivity	F	15	276ms	—	unreachable	07-12 16:01
15	ai.smithery/kesslerio-attio-mcp-server Productivity	F	15	244ms	—	unreachable	07-12 17:03
16	ai.smithery/kodey-ai-salesforce-mcp Productivity	F	15	270ms	—	unreachable	07-12 17:16
17	ai.smithery/kodey-ai-salesforce-mcp-kodey Productivity	F	15	250ms	—	unreachable	07-12 17:16
18	ai.smithery/kodey-ai-salesforce-mcp-minimal Productivity	F	15	282ms	—	unreachable	07-12 17:16
19	ai.smithery/kodey-ai-salesforce-mcp-server Productivity	F	15	249ms	—	unreachable	07-12 17:16
20	ai.smithery/magenie33-quality-dimension-generator Productivity	F	15	260ms	—	unreachable	07-12 17:16
21	ai.smithery/mrugankpednekar-mcp-optimizer Productivity	F	15	229ms	—	unreachable	07-12 17:16
22	ai.smithery/skr-cloudify-clickup-mcp-server-new Productivity	F	15	247ms	—	unreachable	07-12 17:32
23	ai.smithery/yuna0x0-hackmd-mcp Productivity	F	15	236ms	—	unreachable	07-12 17:32
24	ai.smithery/Funding-Machine-ghl-mcp-fundingmachine Productivity	F	12	264ms	—	unreachable	07-12 16:01
25	ai.smithery/Parc-Dev-task-breakdown-server Productivity	F	12	259ms	—	unreachable	07-12 16:16
26	ai.smithery/proflulab-documentassistant Productivity	F	12	225ms	—	unreachable	07-12 17:16

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.