unpaywall

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

Use this server

Add it to your MCP client. The catalogue lists this config verbatim from its source — it does not run, download, or vouch for the server. Review the command before you run it.

Transportstdio (runs a local command)

Env varsUNPAYWALL_EMAIL

Claude Code

claude mcp add --env UNPAYWALL_EMAIL= unpaywall -- uvx unpaywall-mcp-server

Cursor

Add to Cursor

If the button doesn't open Cursor, use the JSON below — Cursor accepts the same mcpServers config.

VS Code

code --add-mcp '{"name":"unpaywall","command":"uvx","args":["unpaywall-mcp-server"],"env":{"UNPAYWALL_EMAIL":""}}'

JSON

{
  "mcpServers": {
    "unpaywall": {
      "command": "uvx",
      "args": [
        "unpaywall-mcp-server"
      ],
      "env": {
        "UNPAYWALL_EMAIL": ""
      }
    }
  }
}

Environment variables are listed by name only — fill in your own values. Entries never carry secrets.