crossref mcp for Claude Code

io.github.jtl-neo/crossref-mcp

MCP server wrapping the Crossref REST API for scholarly metadata.

client:Claude Code transport:stdio runtime:pypi

Install crossref mcp in Claude Code

run in your project directory

claude mcp add crossref-mcp -e CROSSREF_MAILTO=<CROSSREF_MAILTO> -e CROSSREF_PLUS_TOKEN=<CROSSREF_PLUS_TOKEN> -- uvx crossref-mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs