refd MCP Server

by refd Your server? Claim it

answering

refd is answering right now. Last checked 3 min ago. Last commit 29 Sep 2026.

Read AI search visibility, competitors, and citations from refd; manage tracked prompts.

Uptime history 91 days of history · worst day 93%

91 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

476 ms

Response time

average over 24h

Stars

last commit 29 Sep 2026

Nothing serious here today

Today is the operative word: we check refd every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add refd --transport http https://api.refd.ai/mcp

Settings → Connectors → Add custom connector, then paste this address

https://api.refd.ai/mcp

~/.codex/config.toml

[mcp_servers.refd]
url = "https://api.refd.ai/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "refd": {
      "url": "https://api.refd.ai/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "refd": {
      "type": "http",
      "url": "https://api.refd.ai/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URL	Transport	State	Latency	Checked
https://api.refd.ai/mcp	streamable-http	sign-in	408 ms	3 min ago

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refd — questions

Answers built from our own checks of this server.

Why is there no tool list for refd?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is refd working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 476 ms. The bar chart above shows every period we have measured.

How do I connect refd?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to refd?

No API key is involved. refd answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is refd?

It answers our handshake in 476 ms on average, which is faster than 26% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is refd open source?

The code is open source: it is published under the MIT licence, written in TypeScript, 2 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at api.refd.ai, which runs on its operator's own terms.