mcpqueen/mcpqueen

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:
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
Direct protocol examples
The model-free examples under examples/clients call the
hosted endpoint directly:
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.
To point the bridge at another compatible endpoint during local testing, set
MCPQUEEN_MCP_URL in the process environment.
Docker is also supported:
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