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mcp/harbor
Claude Code

unpaywall for Claude Code

io.github.smaboundless/unpaywall

Open-access availability for 120M+ scholarly articles via the Unpaywall API

client:Claude Code transport:stdio runtime:pypi

Install unpaywall in Claude Code

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add unpaywall -e UNPAYWALL_EMAIL=<UNPAYWALL_EMAIL> -- uvx unpaywall-mcp-server

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

unpaywall in other clients

unpaywall MCP server