unpaywall

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "io.github.SMABoundless/unpaywall",
  "description": "Open-access availability for 120M+ scholarly articles via the Unpaywall API",
  "repository": {
    "url": "https://github.com/SMABoundless/unpaywall-mcp-server.git",
    "source": "github"
  },
  "version": "1.0.1",
  "packages": [
    {
      "registryType": "pypi",
      "identifier": "unpaywall-mcp-server",
      "version": "1.0.1",
      "runtimeHint": "uvx",
      "transport": {
        "type": "stdio"
      },
      "environmentVariables": [
        {
          "description": "Your email address — required by the Unpaywall API as an identifier (no API key needed). See https://unpaywall.org/products/api",
          "isRequired": true,
          "name": "UNPAYWALL_EMAIL"
        }
      ]
    }
  ]
}