crossref mcp server for Gemini CLI

io.github.cyanheads/crossref-mcp-server

Resolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API.

client:Gemini CLI transport:streamable-http runtime:npm tools:7

Install crossref mcp server in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

{
  "mcpServers": {
    "crossref-mcp-server": {
      "httpUrl": "https://crossref.caseyjhand.com/mcp"
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs