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"
}

Download DevOps extensions

This PowerShell script can be used to download a .visx file from the Visual Studio Marketplace to a local machine
The required properties for downloading the .visx file can be found in the URL and properties of the extension.

The first part of the URL shows the publisher and the second part the name of the extension file

The version number can be found in the properties field under more info:

Usage

Get-Extension -Publisher 'gep13' -ExtensionName 'chocolatey-azuredevops' -Version '0.2.0' -OutputLocation 'C:\Users\Azurekid'

Get-Extensions `
    -Publisher <publishername> `
    -ExtensionName <displayname of the extension> `
    -Version <specific version> `
    -OutputLocation <Path to save the file>

The url structure has changed, it is now:

"https://marketplace.visualstudio.com/_apis/public/gallery/publishers/${Publisher}/vsextensions/${ExtensionName}/${Version}/vspackage"

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!

https://marketplace.visualstudio.com/_apis/public/gallery/publishers/${Publisher}/vsextensions/${ExtensionName}/${Version}/vspackage

Hi thanks for the feedback, and sorry for not coming back earlier to this.
I have updated the url as you have suggested in your comments but that results in an error message that the package could not be found.

Can you add a PR on you r suggestion, maybe I am doing something wrong ;-)

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 :-)