diff --git a/Stackmonkey.ps1 b/Stackmonkey.ps1
index 6b65fbb..792639f 100644
--- a/Stackmonkey.ps1
+++ b/Stackmonkey.ps1
@@ -937,7 +937,157 @@ $script
 
   #region Install-DattoRMM
 
-  function Install-DattoRMM {
+function Install-DattoRMM {
+    [CmdletBinding(SupportsShouldProcess=$true, ConfirmImpact='Medium')]
+    param (
+        [switch]$UseWebhook,
+        [string]$WebhookPassword,
+        [string]$WebhookUrl    = $Global:DattoWebhookUrl,
+        [string]$ApiUrl,
+        [string]$ApiKey,
+        [string]$ApiSecretKey,
+        [switch]$FetchSites,
+        [switch]$SaveSitesList,
+        [string]$OutputFile      = 'datto_sites.csv',
+        [switch]$PushSiteVars,
+        [switch]$InstallRMM,
+        [switch]$SaveCopy,
+        [string]$SiteUID,
+        [string]$SiteName
+    )
+
+    # Guard: SaveSitesList requires FetchSites
+    if ($SaveSitesList -and -not $FetchSites) {
+        Write-LogHybrid "-SaveSitesList requires -FetchSites." "Error" "DattoRMM" -LogToEvent
+        return
+    }
+
+    # 1) Optionally fetch credentials from webhook
+    if ($UseWebhook) {
+        if (-not $WebhookPassword) {
+            Write-LogHybrid "Webhook password missing." "Error" "DattoRMM" -LogToEvent
+            return
+        }
+        try {
+            $resp = Invoke-RestMethod -Uri $WebhookUrl -Headers @{ SVSMSPKit = $WebhookPassword } -Method GET
+            $ApiUrl       = $resp.ApiUrl
+            $ApiKey       = $resp.ApiKey
+            $ApiSecretKey = $resp.ApiSecretKey
+            Write-LogHybrid "Webhook credentials fetched." "Success" "DattoRMM" -LogToEvent
+        } catch {
+            Write-LogHybrid "Failed to fetch webhook credentials: $($_.Exception.Message)" "Error" "DattoRMM" -LogToEvent
+            return
+        }
+    }
+
+    # 2) Validate API params
+    if (-not $ApiUrl -or -not $ApiKey -or -not $ApiSecretKey) {
+        Write-LogHybrid "Missing required API parameters." "Error" "DattoRMM" -LogToEvent
+        return
+    }
+
+    # 3) Acquire OAuth token
+    [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+    try {
+        $publicCred = New-Object System.Management.Automation.PSCredential(
+            'public-client', (ConvertTo-SecureString 'public' -AsPlainText -Force)
+        )
+        $tokenResp = Invoke-RestMethod -Uri "$ApiUrl/auth/oauth/token" `
+                                       -Credential $publicCred `
+                                       -Method Post `
+                                       -ContentType 'application/x-www-form-urlencoded' `
+                                       -Body "grant_type=password&username=$ApiKey&password=$ApiSecretKey"
+        $token = $tokenResp.access_token
+        Write-LogHybrid "OAuth token acquired." "Success" "DattoRMM" -LogToEvent
+    } catch {
+        Write-LogHybrid "OAuth token fetch failed: $($_.Exception.Message)" "Error" "DattoRMM" -LogToEvent
+        return
+    }
+    $headers = @{ Authorization = "Bearer $token" }
+
+    # 4) Fetch site list (optional early-exit)
+    if ($FetchSites) {
+        try {
+            $sitesResp = Invoke-RestMethod -Uri "$ApiUrl/api/v2/account/sites" -Method Get -Headers $headers
+            $siteList = $sitesResp.sites | ForEach-Object {
+                [PSCustomObject]@{ Name = $_.name; UID = $_.uid }
+            }
+            Write-LogHybrid "Fetched $($siteList.Count) sites." "Success" "DattoRMM" -LogToEvent
+
+            if ($SaveSitesList) {
+                $desktop = [Environment]::GetFolderPath('Desktop')
+                $path    = Join-Path $desktop $OutputFile
+                $ext     = [IO.Path]::GetExtension($OutputFile).ToLower()
+                if ($ext -eq '.json') {
+                    $siteList | ConvertTo-Json -Depth 3 | Out-File -FilePath $path -Encoding UTF8
+                } else {
+                    $siteList | Export-Csv -Path $path -NoTypeInformation -Encoding UTF8
+                }
+                Write-LogHybrid "Wrote $($siteList.Count) sites to $path" "Success" "DattoRMM" -LogToEvent
+            }
+
+            return $siteList
+        } catch {
+            Write-LogHybrid "Failed to fetch sites: $($_.Exception.Message)" "Error" "DattoRMM" -LogToEvent
+            return @()
+        }
+    }
+
+    # 5) Push site variables (optional)
+    if ($PushSiteVars) {
+        try {
+            $varsResp = Invoke-RestMethod -Uri "$ApiUrl/api/v2/site/$SiteUID/variables" -Method Get -Headers $headers
+            Write-LogHybrid "Fetched variables for '$SiteName'." "Success" "DattoRMM" -LogToEvent
+            $regPath = "HKLM:\Software\SVS\Deployment"
+            if (-not (Test-Path $regPath)) { New-Item -Path $regPath -Force | Out-Null }
+            foreach ($v in $varsResp.variables) {
+                try {
+                    New-ItemProperty -Path $regPath -Name $v.name -Value $v.value -PropertyType String -Force | Out-Null
+                    Write-LogHybrid "Wrote '$($v.name)' to registry." "Success" "DattoRMM" -LogToEvent
+                } catch {
+                    Write-LogHybrid "Failed to write '$($v.name)': $($_.Exception.Message)" "Error" "DattoRMM" -LogToEvent
+                }
+            }
+        } catch {
+            Write-LogHybrid "Variable fetch failed: $($_.Exception.Message)" "Error" "DattoRMM" -LogToEvent
+        }
+    }
+
+    # 6) Download & install RMM agent (optional)
+    if ($InstallRMM) {
+        if ($PSCmdlet.ShouldProcess("Site '$SiteName'", "Install RMM agent")) {
+            try {
+                $dlUrl = "https://zinfandel.centrastage.net/csm/profile/downloadAgent/$SiteUID"
+                $tmp   = "$env:TEMP\AgentInstall.exe"
+                Invoke-WebRequest -Uri $dlUrl -OutFile $tmp -UseBasicParsing
+                Write-LogHybrid "Downloaded agent to $tmp." "Info" "DattoRMM" -LogToEvent
+                Start-Process -FilePath $tmp -NoNewWindow
+                Write-LogHybrid "RMM agent installer launched." "Success" "DattoRMM" -LogToEvent
+            } catch {
+                Write-LogHybrid "Agent install failed: $($_.Exception.Message)" "Error" "DattoRMM" -LogToEvent
+            }
+        }
+    }
+
+    # 7) Save a copy of installer to C:\Temp (optional)
+    if ($SaveCopy) {
+        try {
+            $dlUrl = "https://zinfandel.centrastage.net/csm/profile/downloadAgent/$SiteUID"
+            $path  = "C:\Temp\AgentInstall.exe"
+            if (-not (Test-Path 'C:\Temp')) { New-Item -Path 'C:\Temp' -ItemType Directory | Out-Null }
+            Invoke-WebRequest -Uri $dlUrl -OutFile $path -UseBasicParsing
+            Write-LogHybrid "Saved installer copy to $path." "Info" "DattoRMM" -LogToEvent
+        } catch {
+            Write-LogHybrid "Save-copy failed: $($_.Exception.Message)" "Error" "DattoRMM" -LogToEvent
+        }
+    }
+
+    # 8) No-op warning
+    if (-not ($PushSiteVars -or $InstallRMM -or $SaveCopy)) {
+        Write-LogHybrid "No action specified. Use -FetchSites, -SaveSitesList, -PushSiteVars, -InstallRMM, or -SaveCopy." "Warning" "DattoRMM" -LogToEvent
+    }
+}
+
     [CmdletBinding(SupportsShouldProcess=$true, ConfirmImpact='Medium')]
     param (
       [switch]$UseWebhook,