Get-TwilioAccount.ps1

function Get-TwilioAccount
{
    param(
    [Parameter(ValueFromPipelineByPropertyName=$true)]       
    [Management.Automation.PSCredential]
    $Credential,

    [Parameter(ValueFromPipelineByPropertyName=$true)]       
    [string[]]
    $Setting = @("TwilioAccountKey", "TwilioAccountSecret")

    )
    
    process {
        if (-not $Credential -and $Setting) {
            if ($setting.Count -eq 1) {

                $userName = Get-WebConfigurationSetting -Setting "${Setting}_UserName"
                $password = Get-WebConfigurationSetting -Setting "${Setting}_Password"
            } elseif ($setting.Count -eq 2)  {
                $userName = Get-secureSetting -Name $Setting[0] -ValueOnly
                $password= Get-secureSetting -Name $Setting[1] -ValueOnly
            }

            if ($userName -and $password) {                
                $password = ConvertTo-SecureString -AsPlainText -Force $password
                $credential  = New-Object Management.Automation.PSCredential $username, $password 
            } elseif ((Get-SecureSetting -Name "$Setting" -ValueOnly | Select-Object -First 1)) {
                $credential = (Get-SecureSetting -Name "$Setting" -ValueOnly | Select-Object -First 1)
            }
            
            
        }

        if (-not $Credential) {
            Write-Error "No Twilio Credential provided. Use -Credential or Add-SecureSetting TwilioAccountDefault -Credential (Get-Credential) first"               
            return
        }
        
        
        Get-Web -WebCredential  $Credential -Url "https://api.twilio.com/2010-04-01/Accounts/$($Credential.GetNetworkCredential().Username.Trim()).xml" -AsXml -UseWebRequest|
            Select-Object -ExpandProperty TwilioResponse |
            Select-Object -ExpandProperty Account
            
    }
}