TeamCity

Create-Groups.ps1

$data = @{
"GROUP_KEY" = "Group Description"
}

$user = "xxxxxx"
$password = "xxxxxx"

$pair = "$($user):$($password)"

$encodedCreds = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes($pair))
$basicAuthValue = "Basic $encodedCreds"
$headers = @{
    "Authorization" = $basicAuthValue;
    "Accept" = "application/xml";
    "Content-Type" = "application/xml";
}


$data.Keys | % { 

    $body = "<group key='$_' name='$($data[$_])' />"

    $body
    Invoke-WebRequest -Uri "http://server:8111/app/rest/userGroups" -Method Post -Body $body -Headers $headers
}