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paper_lookup — Research Paper & DOI Lookup (Crossref) MCP Tool

paper_lookup (paper lookup) is one of 1 tool on the Research Paper & DOI Lookup (Crossref) MCP server. Connect the server and your client discovers it on the handshake.

by client

How to call paper_lookup from your client

Fastest route

claude mcp add --transport http paper-lookup https://paper-lookup-production-56b0.up.railway.app/mcp

This list was read from the server itself, by connecting to it and calling tools/list on 16 October 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.