diff --git a/src/dlw/marvin_api.py b/src/dlw/marvin_api.py
new file mode 100644
index 0000000..2c9f1d3
--- /dev/null
+++ b/src/dlw/marvin_api.py
@@ -0,0 +1,28 @@
+import requests
+
+class MarvinClient:
+    def __init__(self, api_key, asteroid_name):
+        self.api_key = api_key
+        self.asteroid = asteroid_name
+        self.base_url = "https://api.uberspace.de/api/v1/external"
+        self.headers = {"Authorization": f"Api-Key {api_key}"}
+
+    def setup_webapp_backend(self, port):
+        """Registriert das Flask-Interface in der Marvin API."""
+        url = f"{self.base_url}/asteroids/{self.asteroid}/webbackends/"
+        data = {
+            "asteroid": self.asteroid,
+            "domain": None,
+            "path": "/admin", # Optionaler Pfad für das Interface
+            "destination": "PORT",
+            "port": port
+        }
+        res = requests.post(url, headers=self.headers, json=data)
+        return res.status_code in [201, 200]
+
+    def add_domain(self, domain_name):
+        """Fügt eine neue Web-Domain hinzu."""
+        url = f"{self.base_url}/asteroids/{self.asteroid}/webdomains/"
+        data = {"name": domain_name, "asteroid": self.asteroid}
+        res = requests.post(url, headers=self.headers, json=data)
+        return res.json()
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