crossref for Grok

Install crossref in Grok

.mcp.json (in your project root)

{
  "mcpServers": {
    "crossref": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "crossref-mcp-server"
      ],
      "env": {
        "CROSSREF_MAILTO": "<CROSSREF_MAILTO>"
      }
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs