Crossref MCP Server: Install & Setup

Install Crossref in Claude Code

Remote URL

Claude Code

claude mcp add --transport http pipeworx-io-crossref https://gateway.pipeworx.io/crossref/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "pipeworx-io-crossref": {
      "url": "https://gateway.pipeworx.io/crossref/mcp"
    }
  }
}

npm

Claude Code

claude mcp add pipeworx-io-crossref -- npx -y @pipeworx/mcp-crossref

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "pipeworx-io-crossref": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-crossref"
      ]
    }
  }
}

Frequently asked questions

What does the Crossref MCP server do?

Crossref MCP — wraps the Crossref REST API (academic papers, free, no auth)

Is the Crossref MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Crossref run locally or remotely?

Local + Remote. Can run locally or be used as a hosted remote server.

How do I add Crossref to Claude Code?

Run: claude mcp add --transport http pipeworx-io-crossref https://gateway.pipeworx.io/crossref/mcp

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