mcpbeat

Crossref Scholarly Data MCP Server

io.github.Taru0208/crossref-mcp-server
answering

Crossref Scholarly Data is answering right now. Last checked 14 min ago.

Search 150M+ academic works, journals, and funders via Crossref API.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 42 hours of history
42 hours agonow
100.0%
Uptime 24h
91 of 91 checks
—
Tools
hidden behind auth
474 ms
Response time
average over 24h
API key or OAuth
Access
streamable-http

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

run in your terminal
claude mcp add crossref-mcp-server --transport http https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "crossref-mcp-server": {
      "url": "https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.crossref-mcp-server]
url = "https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "crossref-mcp-server": {
      "url": "https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "crossref-mcp-server": {
      "url": "https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp"
    }
  }
}

This endpoint answered with an authorization challenge — the server is running, but you need an API key or OAuth to use it.

Endpoints

URLTransportStateLatencyChecked
https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp streamable-http needs key 447 ms 14 min ago

Crossref Scholarly Data — questions

Answers built from our own checks of this server.

Why is there no tool list for Crossref Scholarly Data?
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 Crossref Scholarly Data 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 474 ms. The bar chart above shows every period we have measured.
Is Crossref Scholarly Data still maintained?
The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.
How do I connect Crossref Scholarly Data?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own key or an OAuth login: it refuses anonymous clients.
Does Crossref Scholarly Data need an API key?
Yes. Every time we knock, Crossref Scholarly Data answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.
How fast is Crossref Scholarly Data?
It answers our handshake in 474 ms on average, which is faster than 25% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.