heade.rs for Cursor

rs.heade/lookup

Look up any domain, IP address or AS number: hosting, DNS, registration, email, TLS and headers.

client:Cursor transport:streamable-http tools:1

Install heade.rs in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json

{
  "mcpServers": {
    "lookup": {
      "url": "https://heade.rs/mcp"
    }
  }
}

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs