diff --git a/api/serializers.py b/api/serializers.py
index e56a745..f2ee9e8 100644
--- a/api/serializers.py
+++ b/api/serializers.py
@@ -11,6 +11,20 @@ class Meta:
         fields = ["username", "first_name", "last_name", "email"]
 
 
+# Only used for swagger definitions
+class UserLoggedInSerializer(serializers.Serializer):
+    logged_in = serializers.BooleanField()
+    login_url = serializers.URLField(max_length=200)
+    logout_url = serializers.URLField(max_length=200)
+    user_id = serializers.IntegerField()
+    username = serializers.CharField()
+    first_name = serializers.CharField()
+    last_name = serializers.CharField()
+    email = serializers.CharField()
+    organisation = serializers.CharField()
+    kvk = serializers.CharField()
+
+
 class ImportTaskSerializer(UrlFieldMixin, serializers.ModelSerializer):
     class Meta:
         model = api_models.ImportTask
diff --git a/api/views.py b/api/views.py
index dd5b0c3..fb561d0 100644
--- a/api/views.py
+++ b/api/views.py
@@ -2,6 +2,7 @@
 from django.contrib.auth.models import User
 from django.shortcuts import redirect
 from django_filters.rest_framework import DjangoFilterBackend
+from drf_yasg.utils import swagger_auto_schema
 from rest_framework import generics, permissions, status, views, viewsets
 from rest_framework.decorators import action
 from rest_framework.response import Response
@@ -60,11 +61,14 @@ def get_queryset(self):
 
         return queryset
 
+    @swagger_auto_schema(
+        responses={200: serializers.UserLoggedInSerializer()},
+    )
     @action(
         detail=False,
         url_path="logged-in",
     )
-    def logged_in(self, request):
+    def logged_in(self, request) -> Response:
         """Endpoint to check whether the use is logged in or not."""
         user = self.request.user
         if user.is_anonymous: