diff --git a/powershell/Documents/WindowsPowerShell/Microsoft.PowerShell_profile.ps1 b/powershell/Documents/WindowsPowerShell/Microsoft.PowerShell_profile.ps1
new file mode 100644
index 0000000..8e11dc3
--- /dev/null
+++ b/powershell/Documents/WindowsPowerShell/Microsoft.PowerShell_profile.ps1
@@ -0,0 +1,19 @@
+# Add a SSH key to SSH-Agent
+function Add-Key {
+    if ($args.Count -gt 0) {
+        $filename = "$ENV:USERPROFILE/.ssh/id_ed25519_" + $args[0]
+        if (!(Test-Path $filename -PathType Leaf)) {
+            Write-Error "$filename does not exist."
+        }
+        else {
+            Invoke-Expression "ssh-add $filename"   
+        }
+    }
+    else {
+        Invoke-Expression "ssh-add -L"
+    }
+}
+
+Import-Module posh-git
+Import-Module oh-my-posh
+Set-Theme Paradox
\ No newline at end of file