Unpaywall for Claude Code

io.github.pipeworx-io/unpaywall

Unpaywall MCP — open-access lookup for scholarly papers (free, no key)

client:Claude Code transport:streamable-http

Install Unpaywall in Claude Code

run in your project directory

claude mcp add --transport http unpaywall https://gateway.pipeworx.io/unpaywall/mcp

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