diff --git a/custom_components/whatsapp_bridge_custom/__init__.py b/custom_components/whatsapp_bridge_custom/__init__.py
new file mode 100644
index 0000000..7467eef
--- /dev/null
+++ b/custom_components/whatsapp_bridge_custom/__init__.py
@@ -0,0 +1,47 @@
+import logging
+import requests
+import voluptuous as vol
+from homeassistant.helpers import config_validation as cv
+
+_LOGGER = logging.getLogger(__name__)
+
+DOMAIN = "whatsapp_bridge_custom"
+
+# Definition der Service-Parameter
+SERVICE_SEND_MESSAGE = "send_message"
+ATTR_NUMBER = "number"
+ATTR_MESSAGE = "message"
+
+SERVICE_SCHEMA = vol.Schema({
+    vol.Required(ATTR_NUMBER): cv.string,
+    vol.Required(ATTR_MESSAGE): cv.string,
+})
+
+async def async_setup(hass, config):
+    """Set up the WhatsApp Bridge integration."""
+    
+    def send_whatsapp_msg(call):
+        """Dienst-Funktion: Nachricht an das Add-on senden."""
+        number = call.data.get(ATTR_NUMBER)
+        message = call.data.get(ATTR_MESSAGE)
+        
+        # Die interne URL zum Add-on (standardmäßig local-whatsapp-bridge)
+        # Port 3000 haben wir im Dockerfile definiert
+        url = "http://866fd2eb-whatsapp-bridge:3000/send"
+        
+        try:
+            response = requests.post(url, json={
+                "number": number,
+                "message": message
+            }, timeout=10)
+            
+            if response.status_code != 200:
+                _LOGGER.error("Fehler beim Senden: %s", response.text)
+        except Exception as e:
+            _LOGGER.error("Verbindung zum Add-on fehlgeschlagen: %s", str(e))
+
+    hass.services.async_register(
+        DOMAIN, SERVICE_SEND_MESSAGE, send_whatsapp_msg, schema=SERVICE_SCHEMA
+    )
+
+    return True
\ No newline at end of file