com.mcpqueen/registry MCP Server

The com.mcpqueen/registry server acts as an evidence layer for MCP by collecting live operational grades and generating Trust Receipts for registry servers. It is described as running as a Cloudflare Worker launched 2026-07-12, and it crawls the official MCP registry to probe and publish results.

🛠️ Key Features

Live operational grades
Trust Receipts for every registry server
Crawls the official MCP registry
Probes every remote server and grades deterministically with verbatim evidence
Publishes the results for registry servers

🚀 Use Cases

Determining the operational status of MCP registry servers via live grades
Reviewing evidence-backed Trust Receipts per registry server

⚡ Developer Benefits

Deterministic grading with verbatim evidence
Evidence discipline referenced as Constat/Clarity

⚠️ Limitations

Only described at the evidence/registry-probing layer; no specific MCP tools or protocols beyond the registry role are provided.

MCP Queen

MCP Queen is a public discovery and evidence service for Model Context Protocol servers. It publishes dated operational observations, tool metadata, and separate Trust Receipts so developers and agents can inspect evidence before deciding what to connect.

An MCP Queen operational grade is not a security, privacy, data-quality, or compliance certification. Missing evidence is unaudited, not safe.

Use the hosted endpoint

The public Streamable HTTP endpoint requires no account for rate-limited evaluation:

text

https://mcpqueen.com/mcp

It exposes six read-only discovery/evidence tools and one additive feedback tool:

search_servers
search_tools
list_grades
get_server_grade
get_trust_receipt
search_trust_evidence
submit_feedback — writes only to a quarantined review queue

For human-readable setup and current service limits, use mcpqueen.com/connect.

Claude Code

bash

claude mcp add --transport http mcpqueen https://mcpqueen.com/mcp

Direct protocol examples

The model-free examples under examples/clients call the hosted endpoint directly:

bash

node examples/clients/node-http.mjs "GitHub issue triage"

The Python version uses the official MCP SDK. Additional examples show bounded integration with LangChain, LlamaIndex, Cloudflare Agents, Hugging Face, and the OpenAI Responses API. Agent examples allowlist only the six read-only tools; submit_feedback is excluded from automatic model access.

Optional local stdio bridge

This repository contains a small zero-dependency stdio bridge for clients that cannot connect to a remote Streamable HTTP endpoint directly. The bridge does not contain MCP Queen's hosted implementation or evidence corpus; it forwards JSON-RPC messages to https://mcpqueen.com/mcp.

bash

git clone https://github.com/mcpqueen/mcpqueen.git
cd mcpqueen
npm ci
npm start

To point the bridge at another compatible endpoint during local testing, set MCPQUEEN_MCP_URL in the process environment.

Docker is also supported:

bash

docker build -t mcpqueen-bridge .
docker run --rm -i mcpqueen-bridge

What this public repository contains

registry metadata: server.json and glama.json
the hosted-endpoint stdio bridge: server.mjs
model-free and framework examples: examples
public architecture and trust boundaries: docs/architecture.md
deterministic tests and read-only CI

The production Worker, deployment configuration, evidence database, submission packages, operational records, and private source history are not part of this public developer surface. This repository is not a production deployment source.

Verify locally

bash

npm ci
npm test

The tests exercise the bridge against a local mock endpoint and verify that public documentation and package scripts reference files that are actually in this repository.

License and support

Code in this repository is available under the MIT License. Product documentation, privacy, terms, and support are available from mcpqueen.com.

query	string	required	Keyword or task to search name/title/description for
category	string	optional	Optional category filter: Dev & Code, Data & Databases, Web & Search, AI & Agents, Finance & Crypto, Communication, Productivity, Security, Commerce, Media & Design, Cloud & Infra, Science & Health, Other
minimum_grade	string	optional	Worst acceptable live grade
auth	string	optional	Filter by authentication state (default any)
max_latency_ms	number	optional	Maximum measured initialize latency in milliseconds
limit	number	optional	Max results (default 10, max 25)

query	string	required	Capability, data type, or keyword to match against tool names and descriptions
category	string	optional	Optional server-category filter: Dev & Code, Data & Databases, Web & Search, AI & Agents, Finance & Crypto, Communication, Productivity, Security, Commerce, Media & Design, Cloud & Infra, Science & Health, Other
minimum_grade	string	optional	Worst acceptable live server grade
auth	string	optional	Filter by authentication state (default any)
max_latency_ms	number	optional	Maximum measured initialize latency in milliseconds
limit	number	optional	Max matching tools (default 15, max 40)

query	string	required	Evidence, claim, source, capability, caveat, or server keyword
dimension	string	optional
status	string	optional
limit	number	optional	Max evidence items (default 20, max 50)

server_name	string	required	Official registry name of the server the report is about
report	string	required	The field report, 20-2000 chars, specific and factual
agent_name	string	optional	Optional: which agent/client is reporting

MCP Queen

com.mcpqueen/registry MCP Server

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Topics

search_servers

search_tools

list_grades

get_server_grade

get_trust_receipt

search_trust_evidence

submit_feedback

MCP Queen

Use the hosted endpoint

Claude Code

Direct protocol examples

Optional local stdio bridge

What this public repository contains

Verify locally

License and support

Install

Remote endpoint

Related servers