Openunfurl MCP Server

by solvohq Your server? Claim it

not responding

Openunfurl is listed as active in the registry but did not answer our last check. It exposes 1 tools. Last commit 17 May 2026.

Zero-signup anonymous link-unfurl API. One GET returns clean JSON metadata for any public URL.

Uptime history 91 days of history · worst day 36%

91 days agonow

58.2%

Uptime 24h

53 of 91 checks

Tools

read from the server

253 ms

Response time

average over 24h

Stars

last commit 17 May 2026

Openunfurl does not always answer

Over the last week it answered 76.4% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add openunfurl --transport http https://openunfurl.vercel.app/api/mcp

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

https://openunfurl.vercel.app/api/mcp

~/.codex/config.toml

[mcp_servers.openunfurl]
url = "https://openunfurl.vercel.app/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "openunfurl": {
      "url": "https://openunfurl.vercel.app/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "openunfurl": {
      "type": "http",
      "url": "https://openunfurl.vercel.app/api/mcp"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

unfurl

unfurl

Fetch clean link-preview metadata (title, description, image, siteName, favicon, oembed) for any public URL. No signup, no API key. Static-HTML parse only (no JS/SPA render).

Endpoints

URL	Transport	State	Latency	Checked
https://openunfurl.vercel.app/api/mcp	streamable-http	answering	68 ms	8 min ago

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Crates Package Info

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Read-only: public crates.io metadata for a Rust crate. Free, no API key.

1 tools answering

Openunfurl — questions

Answers built from our own checks of this server.

What can Openunfurl do?

It exposes 1 tools, read directly from the server on our last check. Among them: unfurl. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Openunfurl working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 53 of 91 checks got a reply (58.2%), average response time 253 ms. The bar chart above shows every period we have measured.

The registry lists Openunfurl as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Openunfurl?

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.

Does Openunfurl need an API key?

No. Openunfurl completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Openunfurl?

It answers our handshake in 253 ms on average, which is faster than 55% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Openunfurl open source?

The code is open source: it is published under the MIT licence, written in JavaScript and 2 stars on GitHub. The licence covers the code in the repository, not the hosted service at openunfurl.vercel.app, which runs on its operator's own terms.