diff --git a/server/config/urls.py b/server/config/urls.py
index 9e3094c9..59202975 100644
--- a/server/config/urls.py
+++ b/server/config/urls.py
@@ -11,6 +11,7 @@ from django.views.decorators.csrf import csrf_exempt
 from django_ratelimit.exceptions import Ratelimited
 from graphene_django.views import GraphQLView
 
+from vbv_lernwelt.api.user import get_cockpit_type
 from vbv_lernwelt.assignment.views import request_assignment_completion_status
 from vbv_lernwelt.core.middleware.auth import django_view_authentication_exempt
 from vbv_lernwelt.core.schema import schema
@@ -124,6 +125,9 @@ urlpatterns = [
     path(r"api/course/completion/<signed_int:course_session_id>/<uuid:user_id>/",
          request_course_completion_for_user,
          name="request_course_completion_for_user"),
+    path(r"api/course/<int:course_id>/cockpit/",
+         get_cockpit_type,
+         name="get_cockpit_type"),
 
     path("api/mentor/<signed_int:course_session_id>/", include("vbv_lernwelt.learning_mentor.urls")),
 
diff --git a/server/vbv_lernwelt/api/__init__.py b/server/vbv_lernwelt/api/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/server/vbv_lernwelt/api/tests/__init__.py b/server/vbv_lernwelt/api/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/server/vbv_lernwelt/api/tests/test_cockpit.py b/server/vbv_lernwelt/api/tests/test_cockpit.py
new file mode 100644
index 00000000..4802101e
--- /dev/null
+++ b/server/vbv_lernwelt/api/tests/test_cockpit.py
@@ -0,0 +1,59 @@
+from django.urls import reverse
+from rest_framework import status
+from rest_framework.test import APITestCase
+
+from vbv_lernwelt.course.creators.test_utils import (
+    create_course,
+    create_course_session,
+    create_user,
+)
+from vbv_lernwelt.course.models import CourseSessionUser
+from vbv_lernwelt.learning_mentor.models import LearningMentor
+
+
+class MeUserViewTest(APITestCase):
+    def setUp(self) -> None:
+        self.course, _ = create_course("Test Course")
+        self.user = create_user("tester")
+        self.url = reverse("get_cockpit_type", kwargs={"course_id": self.course.id})
+
+    def test_no_cockpit(self) -> None:
+        # GIVEN
+        self.client.force_login(self.user)
+
+        # WHEN
+        response = self.client.get(self.url)
+
+        # THEN
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEquals(response.data["type"], None)
+
+    def test_mentor_cockpit(self) -> None:
+        # GIVEN
+        self.client.force_login(self.user)
+        LearningMentor.objects.create(mentor=self.user, course=self.course)
+
+        # WHEN
+        response = self.client.get(self.url)
+
+        # THEN
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEquals(response.data["type"], "mentor")
+
+    def test_trainer_cockpit(self) -> None:
+        # GIVEN
+        self.client.force_login(self.user)
+        course_session = create_course_session(course=self.course, title="Test Session")
+
+        CourseSessionUser.objects.create(
+            user=self.user,
+            course_session=course_session,
+            role=CourseSessionUser.Role.EXPERT,
+        )
+
+        # WHEN
+        response = self.client.get(self.url)
+
+        # THEN
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEquals(response.data["type"], "trainer")
diff --git a/server/vbv_lernwelt/api/user.py b/server/vbv_lernwelt/api/user.py
new file mode 100644
index 00000000..e59f51d0
--- /dev/null
+++ b/server/vbv_lernwelt/api/user.py
@@ -0,0 +1,27 @@
+from django.shortcuts import get_object_or_404
+from rest_framework.decorators import api_view, permission_classes
+from rest_framework.generics import get_object_or_404
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.response import Response
+
+from vbv_lernwelt.course.models import Course, CourseSessionUser
+from vbv_lernwelt.learning_mentor.models import LearningMentor
+
+
+@api_view(["GET"])
+@permission_classes([IsAuthenticated])
+def get_cockpit_type(request, course_id: int):
+    course = get_object_or_404(Course, id=course_id)
+
+    cockpit_type = None
+
+    if LearningMentor.objects.filter(mentor=request.user, course=course).exists():
+        cockpit_type = "mentor"
+    elif CourseSessionUser.objects.filter(
+        user=request.user,
+        course_session__course=course,
+        role=CourseSessionUser.Role.EXPERT,
+    ).exists():
+        cockpit_type = "trainer"
+
+    return Response({"type": cockpit_type})
diff --git a/server/vbv_lernwelt/course/models.py b/server/vbv_lernwelt/course/models.py
index 78c88b84..c5dbeb7f 100644
--- a/server/vbv_lernwelt/course/models.py
+++ b/server/vbv_lernwelt/course/models.py
@@ -269,7 +269,6 @@ class CourseSessionUser(models.Model):
     class Role(models.TextChoices):
         MEMBER = "MEMBER", _("Teilnehmer")
         EXPERT = "EXPERT", _("Experte/Trainer")
-        TUTOR = "TUTOR", _("Lernbegleitung")
 
     role = models.CharField(choices=Role.choices, max_length=255, default=Role.MEMBER)
 
diff --git a/server/vbv_lernwelt/learning_mentor/views.py b/server/vbv_lernwelt/learning_mentor/views.py
index 0904b692..7c9c58b2 100644
--- a/server/vbv_lernwelt/learning_mentor/views.py
+++ b/server/vbv_lernwelt/learning_mentor/views.py
@@ -153,4 +153,20 @@ def remove_self_from_mentor(request, course_session_id: int, mentor_id: int):
 @api_view(["POST"])
 @permission_classes([IsAuthenticated])
 def accept_invitation(request, course_session_id: int):
+    course_session = get_object_or_404(CourseSession, id=course_session_id)
+    invitation = get_object_or_404(
+        MentorInvitation, id=request.data.get("invitation_id")
+    )
+
+    if invitation.participant.course_session != course_session:
+        return Response(
+            data={"message": "Invalid invitation"}, status=status.HTTP_400_BAD_REQUEST
+        )
+
+    mentor, _ = LearningMentor.objects.get_or_create(
+        mentor=request.user, course=course_session.course
+    )
+
+    mentor.participants.add(invitation.participant)
+
     return Response({})