Download Dataverse REST API metadata

Get-DynamicsMetadata.ps1

$environmentUrl = 'https://yourtenant.crmX.dynamics.com/' # change this
$writeFileTo =  'C:\temp\dynamics-metadata.xml' # change this
$azTenantId = "Insert your AD tenant ID (GUID)" #change this

## Login if not already logged in
if ($null -eq (Get-AzTenant -ErrorAction SilentlyContinue)) {
   Connect-AzAccount -TenantId $azTenantId| Out-Null
}
# Get an access token
$token = (Get-AzAccessToken -ResourceUrl $environmentUrl).Token
# Common headers
$xmlHeaders = @{
   'Authorization'    = 'Bearer ' + $token
   'Accept'           = 'application/xml'
   'OData-MaxVersion' = '4.0'
   'OData-Version'    = '4.0'
}

$doc = [xml](Invoke-WebRequest `
      -Uri ($environmentUrl + 'api/data/v9.2/$metadata?annotations=true') `
      -Method 'Get' `
      -Headers $xmlHeaders ).Content

$StringWriter = New-Object System.IO.StringWriter
$XmlWriter = New-Object System.XMl.XmlTextWriter $StringWriter
$xmlWriter.Formatting = 'indented'
$xmlWriter.Indentation = 2
$doc.WriteContentTo($XmlWriter)
$XmlWriter.Flush()
$StringWriter.Flush()
Set-Content -Path $writeFileTo -Value $StringWriter.ToString()
code $writeFileTo