diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..cebffb7
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module git.send.nrw/sendnrw/pcinfoagent
+
+go 1.25.3
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..e329d8c
--- /dev/null
+++ b/main.go
@@ -0,0 +1,187 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/exec"
+	"os/signal"
+	"os/user"
+	"strings"
+	"syscall"
+	"time"
+)
+
+type Notification struct {
+	ID         int64     `json:"id"`
+	CreatedAt  time.Time `json:"created_at"`
+	Title      string    `json:"title"`
+	Message    string    `json:"message"`
+	TargetUser string    `json:"target_user"`
+}
+
+var (
+	serviceURL   = "http://127.0.0.1:24000"
+	pollInterval = 10 * time.Second
+)
+
+func main() {
+	if v := os.Getenv("SERVICE_URL"); v != "" {
+		serviceURL = strings.TrimRight(v, "/")
+	}
+
+	// Benutzername bestimmen (z. B. "DOMAIN\\user" oder "user")
+	userName := currentUserName()
+	log.Printf("Notification-Agent gestartet für Benutzer: %s", userName)
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	var lastSeenID int64 = 0
+
+	ticker := time.NewTicker(pollInterval)
+	defer ticker.Stop()
+
+	// beim Start einmal sofort
+	if err := pollOnce(ctx, userName, &lastSeenID); err != nil {
+		log.Printf("initial poll error: %v", err)
+	}
+
+	for {
+		select {
+		case <-ctx.Done():
+			log.Println("Agent beendet.")
+			return
+		case <-ticker.C:
+			if err := pollOnce(ctx, userName, &lastSeenID); err != nil {
+				log.Printf("poll error: %v", err)
+			}
+		}
+	}
+}
+
+func currentUserName() string {
+	u, err := user.Current()
+	if err == nil && u.Username != "" {
+		return u.Username
+	}
+	if u := os.Getenv("USERNAME"); u != "" {
+		return u
+	}
+	return "unknown"
+}
+
+func pollOnce(ctx context.Context, userName string, lastSeenID *int64) error {
+	url := fmt.Sprintf("%s/api/notifications?user=%s&since_id=%d",
+		serviceURL,
+		urlQueryEscape(userName),
+		*lastSeenID,
+	)
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return err
+	}
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("status %s", resp.Status)
+	}
+
+	var notifs []Notification
+	if err := json.NewDecoder(resp.Body).Decode(&notifs); err != nil {
+		return err
+	}
+
+	var maxID = *lastSeenID
+	for _, n := range notifs {
+		if n.ID > maxID {
+			maxID = n.ID
+		}
+		showErr := showToast(n.Title, n.Message)
+		if showErr != nil {
+			log.Printf("showToast error: %v", showErr)
+		}
+	}
+
+	if maxID > *lastSeenID {
+		*lastSeenID = maxID
+	}
+	return nil
+}
+
+func urlQueryEscape(s string) string {
+	// minimal, reicht hier
+	return strings.ReplaceAll(s, " ", "%20")
+}
+
+// === Toast ===
+
+func escapeXML(s string) string {
+	replacer := strings.NewReplacer(
+		`&`, "&amp;",
+		`<`, "&lt;",
+		`>`, "&gt;",
+		`"`, "&quot;",
+		`'`, "&apos;",
+	)
+	return replacer.Replace(s)
+}
+
+func showToast(title, message string) error {
+	title = strings.TrimSpace(title)
+	message = strings.TrimSpace(message)
+	if title == "" {
+		title = "Benachrichtigung"
+	}
+	if message == "" {
+		return nil
+	}
+
+	// XML escapen
+	title = escapeXML(title)
+	message = escapeXML(message)
+
+	psScript := fmt.Sprintf(`
+[Windows.UI.Notifications.ToastNotificationManager, Windows.UI.Notifications, ContentType = WindowsRuntime] > $null
+[Windows.Data.Xml.Dom.XmlDocument, Windows.Data.Xml.Dom.XmlDocument, ContentType = WindowsRuntime] > $null
+
+# AppId von "Windows PowerShell" holen (oder erste gefundene App als Fallback)
+$appid = (Get-StartApps | Where-Object Name -eq 'Windows PowerShell').AppId
+if (-not $appid) {
+    $appid = (Get-StartApps | Select-Object -First 1).AppId
+}
+
+$xmlString = @"
+<toast activationType="foreground">
+  <visual>
+    <binding template="ToastGeneric">
+      <text>%s</text>
+      <text>%s</text>
+    </binding>
+  </visual>
+</toast>
+"@
+
+$xml = New-Object Windows.Data.Xml.Dom.XmlDocument
+$xml.LoadXml($xmlString)
+
+$notifier = [Windows.UI.Notifications.ToastNotificationManager]::CreateToastNotifier($appid)
+$toast = [Windows.UI.Notifications.ToastNotification]::new($xml)
+$notifier.Show($toast)
+`, title, message)
+
+	cmd := exec.Command("powershell", "-NoProfile", "-NonInteractive", "-Command", psScript)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("powershell toast error: %v, output: %s", err, string(out))
+	}
+	return nil
+}