crossref mcp server for Claude.ai

io.github.cyanheads/crossref-mcp-server

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

client:Claude.ai transport:streamable-http runtime:npm tools:7

Install crossref mcp server in Claude.ai

Settings → Connectors → Add custom connector

https://crossref.caseyjhand.com/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

crossref_get_work
crossref_get_references
crossref_search_works
crossref_search_journals
crossref_search_funders
crossref_get_member
crossref_get_prefix

crossref mcp server in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

crossref mcp server MCP server