Crossref Scholarly Data MCP Server

by taru0208 Your server? Claim it

answering

Crossref Scholarly Data is answering right now. Last checked 11 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 91 days of history

91 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

391 ms

Response time

average over 24h

authentication required

Access

streamable-http

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add crossref-mcp-server --transport http https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp

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

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

{
  "servers": {
    "crossref-mcp-server": {
      "type": "http",
      "url": "https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but it did not say what kind of credentials it expects.

Endpoints

URL	Transport	State	Latency	Checked
https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp	streamable-http	needs auth	405 ms	11 min ago

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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 391 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 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 will need your own credentials: 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 391 ms on average, which is faster than 34% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.