LocalFree

Unpaywall MCP server

mrfentmen/unpaywall-mcp

Open access links from Unpaywall. No key required.

Source code

Install Unpaywall in Claude Code

Claude Code
claude mcp add mrfentmen-unpaywall -- npx -y @mrfentmen/unpaywall-mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "mrfentmen-unpaywall": {
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/unpaywall-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the Unpaywall MCP server do?

Open access links from Unpaywall. No key required.

Is the Unpaywall MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Unpaywall run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Unpaywall to Claude Code?

Run: claude mcp add mrfentmen-unpaywall -- npx -y @mrfentmen/unpaywall-mcp

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