io.github.jtl-neo/crossref-mcp

Official

by jtl-neo · Python

MCP server wrapping the Crossref REST API for scholarly metadata.

Access scholarly article metadata and citations from the Crossref database.

Install

Configuration

Environment variables

CROSSREF_MAILTO

Email for Crossref's polite pool (recommended).

CROSSREF_PLUS_TOKENsecret

Optional Crossref Plus API token.

MCP_API_KEYsecret

Optional X-API-Key for HTTP transport.

claude_desktop_config.json

{
  "mcpServers": {
    "crossref-mcp": {
      "command": "uvx",
      "args": [
        "crossref-mcp"
      ],
      "env": {
        "CROSSREF_MAILTO": "<YOUR_CROSSREF_MAILTO>",
        "CROSSREF_PLUS_TOKEN": "<YOUR_CROSSREF_PLUS_TOKEN>"
      }
    }
  }
}