PowerShell script to download DevOps Extensions from the marketplace as a local file

get-extensions.ps1

[CmdletBinding()]
param
(
    [Parameter(Mandatory = $true)]
    [string] $Publisher,

    [Parameter(Mandatory = $true)]
    [string] $ExtensionName,

    [Parameter(Mandatory = $true)]
    [ValidateScript( {
            If ($_ -match "^([0-9]+\.[0-9]+\.[0-9]+)$") {
                $True
            }
            else {
                Throw "$_ is not a valid version number. Version can only contain digits"
            }
        })]
    [string] $Version,

    [Parameter(Mandatory = $true)]
    [string] $OutputLocation
)

Set-StrictMode -Version Latest
$ErrorActionPreference = "Stop"

Write-Output "Publisher:        $($Publisher)"
Write-Output "Extension name:   $($ExtensionName)"
Write-Output "Version:          $($Version)"
Write-Output "Output location   $($OutputLocation)"

$baseUrl = "https://$($Publisher).gallery.vsassets.io/_apis/public/gallery/publisher/$($Publisher)/extension/$($ExtensionName)/$($Version)/assetbyname/Microsoft.VisualStudio.Services.VSIXPackage"
$outputFile = "$($Publisher)-$($ExtensionName)-$($Version).visx"

if (Test-Path $OutputLocation) {
    try {
        Write-Output "Retrieving extension..."
        [uri]::EscapeUriString($baseUrl) | Out-Null
        Invoke-WebRequest -Uri $baseUrl -OutFile "$OutputLocation\$outputFile"
    }
    catch {
        Write-Error "Unable to find the extension in the marketplace"
    }
}
else {
    Write-Output "The Path $($OutputLocation) does not exist"
}

Great script, @azurekid! I'd like to thank @paviad for modernizing it. Additionally, to allow for versions in the format of d+.d+.d+ (not just d.d.d), it's a good idea to change line 12 from If ($_ -match "^([0-9].[0-9].[0-9])") { to If ($_ -match "^([0-9]+\.[0-9]+\.[0-9]+)$") {.

I ran the script in Bash using the following command:

pwsh /home/user/scripts/script.ps1 -Publisher "GitHub" -ExtensionName "copilot" -Version "1.96.259" -OutputLocation "/home/user/downloads" 

It worked flawlessly!

hi @uyriq
It has been quiet a while when I wrote this little script, but happy it still seems to work.
I have added your suggestion to the code

Kind Regards,

Rogier

I am trying to use this and for whatever reason it keeps giving me the error:
Unable to find the extension in marketplace. Our company started having issues with some of their downloads as well last month.
cmdlet DL_ext3.ps1 at command pipeline position 1
Supply values for the following parameters:
Publisher: Red Hat
ExtensionName: redhat.ansible
Version: 25.2.0
OutputLocation: C:\Users\fm815f
Publisher: Red Hat
Extension name: redhat.ansible
Version: 25.2.0
Output location C:\Users\fm815f
Retrieving extension...
DL_ext3.ps1: Unable to find the extension in the marketplace

Any help would be greatly appreciated. Thanks

I am trying to use this and for whatever reason it keeps giving me the error: Unable to find the extension in marketplace. Our company started having issues with some of their downloads as well last month. cmdlet DL_ext3.ps1 at command pipeline position 1 Supply values for the following parameters: Publisher: Red Hat ExtensionName: redhat.ansible Version: 25.2.0 OutputLocation: C:\Users\fm815f Publisher: Red Hat Extension name: redhat.ansible Version: 25.2.0 Output location C:\Users\fm815f Retrieving extension... DL_ext3.ps1: Unable to find the extension in the marketplace

Any help would be greatly appreciated. Thanks

Hi, and happy weekend @l-logan-777
I will take a look at it and come back to you later this weekend
Can you share something like a screenshot of the error you are getting

Hi, Wanted to let you know that I have figured it out. It was not an error in the code. After debugging it a bit, that it was a network proxy issue at work. It worked perfectly at home. Thanks for responding.

…

--Lee

________________________________ From: Rogier Dijkman ***@***.***> Sent: Saturday, March 8, 2025 12:42 AM To: azurekid ***@***.***> Cc: Mention ***@***.***> Subject: Re: azurekid/get-extensions.ps1 WARNING: This email originated from outside of Cornerstone Defense. Treat with EXTREME CAUTION! DO NOT CLICK LINKS OR OPEN ATTACHMENTS unless you are ABSOLUTELY CERTAIN of the sender. NEVER provide your username or password. @azurekid commented on this gist.

________________________________ I am trying to use this and for whatever reason it keeps giving me the error: Unable to find the extension in marketplace. Our company started having issues with some of their downloads as well last month. cmdlet DL_ext3.ps1 at command pipeline position 1 Supply values for the following parameters: Publisher: Red Hat ExtensionName: redhat.ansible Version: 25.2.0 OutputLocation: C:\Users\fm815f Publisher: Red Hat Extension name: redhat.ansible Version: 25.2.0 Output location C:\Users\fm815f Retrieving extension... DL_ext3.ps1: Unable to find the extension in the marketplace Any help would be greatly appreciated. Thanks Hi, and happy weekend @l-logan-777<https://github.com/l-logan-777> I will take a look at it and come back to you later this weekend — Reply to this email directly, view it on GitHub<https://gist.github.com/azurekid/ca641c47981cf8074aeaf6218bb9eb58#gistcomment-5474767> or unsubscribe<https://github.com/notifications/unsubscribe-auth/BQFGTWBUUHXPIZCR7T6NVGT2TKNNHBFKMF2HI4TJMJ2XIZLTSKBKK5TBNR2WLJDUOJ2WLJDOMFWWLO3UNBZGKYLEL5YGC4TUNFRWS4DBNZ2F6YLDORUXM2LUPGBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DFVRZXKYTKMVRXIX3UPFYGLK2HNFZXIQ3PNVWWK3TUUZ2G64DJMNZZDAVEOR4XAZNEM5UXG5FFOZQWY5LFVEYTAMBTGQ3DGMJXU52HE2LHM5SXFJTDOJSWC5DF>. You are receiving this email because you were mentioned. Triage notifications on the go with GitHub Mobile for iOS<https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android<https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

It is quiet some time ago when I wrote this script.
If would like to see any features added, please let me know :-)