#This Qualtrics API call only returns surveys accessible to the user holding the token, not all surveys in the tenant.

#Define headers and API endpoint.
$headers = @{
    "X-API-TOKEN" = yourapitoken
}

$qualtrics_api_url = "https://yourdatacenter.qualtrics.com/API/v3"
$endpoint = "surveys"
$uri = $qualtrics_api_url+"/"+$endpoint

#Create an empty array and fill it.
$surveys = @()
$result = Invoke-RestMethod -Method Get -Uri $uri -Headers $headers
$surveys += $result.result.elements

#If pagination is required, change the query URI to the nextPage property returned in the previous loop.
while($result.result.nextPage){
    $result = Invoke-RestMethod -Method Get -Uri $result.result.nextPage -Headers $headers
    $surveys += $result.result.elements
    Write-Host "." -NoNewline -ForegroundColor Green
}

return $surveys