crossref mcp server for Claude Code

io.github.cyanheads/crossref-mcp-server

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

client:Claude Code transport:streamable-http runtime:npm tools:7

Install crossref mcp server in Claude Code

run in your project directory

claude mcp add --transport http crossref-mcp-server https://crossref.caseyjhand.com/mcp

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