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mcp/harbor
LangChain

unpaywall for LangChain

io.github.smaboundless/unpaywall

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

client:LangChain transport:stdio runtime:pypi

Install unpaywall in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "unpaywall": {
            "transport": "stdio",
            "command": "uvx",
            "args": ["unpaywall-mcp-server"],
        }
})

tools = await client.get_tools()

get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs

unpaywall in other clients

unpaywall MCP server