$request.Query

Get the query parameters of a request.

Example:

New-WebRoute -Path "/hellome" -Method "GET" -ScriptBlock {
    if ($request.Query['name']) {
        $response.Send('Hello ' + $request.Query['name']);
    } else {
        $response.Send('Hello World');
    }
}

PS > Invoke-RestMethod -Uri http://localhost:8082/hellome?name=PowerShell
Hello PowerShell