crossref mcp for Claude Code

io.github.mrfentmen/crossref-mcp

Crossref: search 160M+ scholarly works, DOIs, journals, authors and funders - keyless.

client:Claude Code transport:stdio runtime:npm

Install crossref mcp in Claude Code

run in your project directory

claude mcp add crossref-mcp -- npx -y @mrfentmen/crossref-mcp

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