Research Paper & DOI Lookup (Crossref) for Claude.ai

io.github.pcp183/paper-lookup

Resolve DOIs and search 150M+ scholarly works (Crossref): authors, journal, citations. x402.

client:Claude.ai transport:streamable-http tools:1

Install Research Paper & DOI Lookup (Crossref) in Claude.ai

Settings → Connectors → Add custom connector

https://paper-lookup-production-56b0.up.railway.app/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

paper_lookup

Research Paper & DOI Lookup (Crossref) in other clients

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

Research Paper & DOI Lookup (Crossref) MCP server