Server data from the Official MCP Registry
The graded MCP registry: evidence-backed server grades from live probes. Search, verify, connect.
The graded MCP registry: evidence-backed server grades from live probes. Search, verify, connect.
Remote endpoints: streamable-http: https://mcpqueen.com/mcp
MCP Queen is a well-engineered registry crawler and grading system with clean architecture and appropriate security practices. The server implements proper authentication controls for admin endpoints, uses parameterized queries to prevent SQL injection, and handles sensitive operations safely. Minor code quality findings around broad exception handling and input validation do not materially affect the security posture. Permissions align well with the stated purpose of crawling registries, probing remote servers, and serving web content. Supply chain analysis found 1 known vulnerability in dependencies (0 critical, 1 high severity).
3 files analyzed · 5 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
This plugin requests these system permissions. Most are normal for its category.
Available as Local & Remote
This plugin can run on your machine or connect to a hosted endpoint. during install.
From the project's GitHub README.
LIVE at https://mcpqueen.com (Cloudflare Worker, launched 2026-07-12). Crawls the official MCP registry, probes every remote server, grades it deterministically with verbatim evidence, and publishes the results. Evidence discipline from Constat/Clarity, personality on top.
src/worker.ts — everything: registry crawler, prober/grader, HTML pages,
JSON API, and mcpqueen's own MCP endpoint.public/ — static landing (crown data-rain + Vex the fox) served via the
assets binding; the Worker handles all non-asset routes.mcpqueen (schema.sql): servers, probes, latest_grades,
feedback (quarantined agent field reports), meta (sync cursor).*/15 * * * *: sync 4 registry pages + probe the 30 stalest remotes
(~2,900 probes/day; full re-probe cycle ≈ 2.7 days over ~7.7K remotes).| Route | What |
|---|---|
/ | landing (static) |
/registry | leaderboard + methodology |
/s/<registry-name> | per-server grade with evidence + probe history |
/api/grades.json | grades as JSON (CORS open) |
/mcp | mcpqueen's MCP server: list_grades, get_server_grade, submit_feedback |
/mcp-info | for-agents page |
/admin/sync?key=…&pages=N | manual registry crawl (ADMIN_KEY in .secrets.local) |
/admin/probe?key=…&batch=N or &server=<name> | manual probe / re-probe one server (grade disputes) |
reachability 25 · protocol 15 · tooling 35 (tools/list, described %, typed %,
description depth) · latency 10 · provenance 15 (metadata + namespace↔domain
match). Auth-gated servers are scored on the verifiable subset and marked
provisional. Agent feedback via submit_feedback is quarantined for human
review — never auto-published, never affects grades directly.
npm run deploy # wrangler deploy (CLOUDFLARE_API_TOKEN in radar/.secrets.local works)
npm run db:schema # apply schema.sql to remote D1
Custom domains mcpqueen.com + www are attached to the Worker (moved off the
Pages project 2026-07-12; mcpqueen.pages.dev still exists as a static preview of
public/ only — it has no /registry).
feedback table).Be the first to review this server!
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