diff --git a/openslides/agenda/apps.py b/openslides/agenda/apps.py
index 5a1d22f3f..3a9b98c26 100644
--- a/openslides/agenda/apps.py
+++ b/openslides/agenda/apps.py
@@ -15,8 +15,10 @@ class AgendaAppConfig(AppConfig):
         from openslides.config.signals import config_signal
         from openslides.projector.api import register_slide
         from openslides.projector.signals import projector_overlays
+        from openslides.utils.rest_api import router
         from .signals import agenda_list_of_speakers, setup_agenda_config, listen_to_related_object_delete_signal
         from .slides import agenda_slide
+        from .views import ItemViewSet
 
         # Connect signals.
         config_signal.connect(setup_agenda_config, dispatch_uid='setup_agenda_config')
@@ -26,3 +28,6 @@ class AgendaAppConfig(AppConfig):
         # Register slides.
         Item = self.get_model('Item')
         register_slide('agenda', agenda_slide, Item)
+
+        # Register viewset.
+        router.register('agenda/item', ItemViewSet)
diff --git a/openslides/agenda/serializers.py b/openslides/agenda/serializers.py
new file mode 100644
index 000000000..576fc8781
--- /dev/null
+++ b/openslides/agenda/serializers.py
@@ -0,0 +1,34 @@
+from rest_framework import serializers
+
+from .models import Item, Speaker
+
+
+class SpeakerSerializer(serializers.HyperlinkedModelSerializer):
+    """
+    Serializer for a agenda.models.Speaker objects.
+    """
+    class Meta:
+        model = Speaker
+        fields = (
+            'id',
+            'user',
+            'begin_time',
+            'end_time',
+            'weight')
+
+
+class ItemSerializer(serializers.ModelSerializer):
+    """
+    Serializer for a agenda.models.Item objects.
+    """
+    get_title = serializers.CharField(read_only=True)
+    get_title_supplement = serializers.CharField(read_only=True)
+    item_no = serializers.CharField(read_only=True)
+    speaker_set = SpeakerSerializer(many=True, read_only=True)
+    # content_object = serializers.PrimaryKeyRelatedField(read_only=True)
+
+    class Meta:
+        model = Item
+        exclude = ('content_type', 'object_id')
+
+    # TODO: Problem: User can always see the time shedule. Filter fields with respect of permission.
diff --git a/openslides/agenda/views.py b/openslides/agenda/views.py
index 3de13950d..7780f50ac 100644
--- a/openslides/agenda/views.py
+++ b/openslides/agenda/views.py
@@ -23,6 +23,7 @@ from openslides.projector.api import (
     get_projector_overlays_js,
     get_overlays,
     update_projector)
+from openslides.utils import rest_api
 from openslides.utils.exceptions import OpenSlidesError
 from openslides.utils.pdf import stylesheet
 from openslides.utils.utils import html_strong
@@ -42,6 +43,7 @@ from openslides.utils.views import (
 from .csv_import import import_agenda_items
 from .forms import AppendSpeakerForm, ItemForm, ItemOrderForm, RelatedItemForm
 from .models import Item, Speaker
+from .serializers import ItemSerializer
 
 
 class Overview(TemplateView):
@@ -773,3 +775,42 @@ class ItemCSVImportView(CSVImportView):
     required_permission = 'agenda.can_manage_agenda'
     success_url_name = 'item_overview'
     template_name = 'agenda/item_form_csv_import.html'
+
+
+class ItemViewSet(rest_api.viewsets.ModelViewSet):
+    """
+    API endpoint to view, edit and delete agenda items.
+    """
+    model = Item
+    serializer_class = ItemSerializer
+
+    def check_permissions(self, request):
+        """
+        Calls self.permission_denied() if the requesting user has not the
+        permission to see and in case of create, update or destroy requests
+        the permission to manage.
+        """
+        if not request.user.has_perm('agenda.can_see_agenda'):
+            self.permission_denied(request)
+        elif (self.action in ('create', 'update', 'destroy')
+                and not request.user.has_perm('agenda.can_manage_agenda')):
+            # This is the same as self.action not in ('list', 'retrieve')
+            self.permission_denied(request)
+
+    def check_object_permissions(self, request, obj):
+        """
+        Checks if the requesting user has permission to see also an
+        organizational item if it is one.
+        """
+        if obj.type == obj.ORGANIZATIONAL_ITEM and not request.user.has_perm('agenda.can_see_orga_items'):
+            self.permission_denied(request)
+
+    def get_queryset(self):
+        """
+        Filters organizational items if the user has no permission to see it.
+        """
+        queryset = Item.objects.all()
+        if (not self.request.user.has_perm('agenda.can_see_orga_items') and
+                not self.request.user.has_perm('agenda.can_manage_agenda')):
+            queryset = queryset.exclude(type__exact=Item.ORGANIZATIONAL_ITEM)
+        return queryset
diff --git a/openslides/core/apps.py b/openslides/core/apps.py
index fb0fa62e0..caafdbf69 100644
--- a/openslides/core/apps.py
+++ b/openslides/core/apps.py
@@ -13,7 +13,9 @@ class CoreAppConfig(AppConfig):
         # Import all required stuff.
         from openslides.config.signals import config_signal
         from openslides.projector.api import register_slide_model
+        from openslides.utils.rest_api import router
         from .signals import setup_general_config
+        from .views import CustomSlideViewSet
 
         # Connect signals.
         config_signal.connect(setup_general_config, dispatch_uid='setup_general_config')
@@ -21,3 +23,6 @@ class CoreAppConfig(AppConfig):
         # Register slides.
         CustomSlide = self.get_model('CustomSlide')
         register_slide_model(CustomSlide, 'core/customslide_slide.html')
+
+        # Register viewset.
+        router.register('core/customslide', CustomSlideViewSet)
diff --git a/openslides/core/serializers.py b/openslides/core/serializers.py
new file mode 100644
index 000000000..1a052dd27
--- /dev/null
+++ b/openslides/core/serializers.py
@@ -0,0 +1,11 @@
+from rest_framework import serializers
+
+from .models import CustomSlide
+
+
+class CustomSlideSerializer(serializers.ModelSerializer):
+    """
+    Serializer for a core.models.CustomSlide objects.
+    """
+    class Meta:
+        model = CustomSlide
diff --git a/openslides/core/views.py b/openslides/core/views.py
index 1e41107ec..fade07f12 100644
--- a/openslides/core/views.py
+++ b/openslides/core/views.py
@@ -12,14 +12,16 @@ from haystack.views import SearchView as _SearchView
 from openslides import get_version as get_openslides_version
 from openslides import get_git_commit_id, RELEASE
 from openslides.config.api import config
+from openslides.utils import rest_api
+from openslides.utils import views as utils_views
 from openslides.utils.plugins import get_plugin_description, get_plugin_verbose_name, get_plugin_version
 from openslides.utils.signals import template_manipulation
-from openslides.utils import views as utils_views
 from openslides.utils.widgets import Widget
 
 from .forms import SelectWidgetsForm
 from .models import CustomSlide, Tag
 from .exceptions import TagException
+from .serializers import CustomSlideSerializer
 
 
 class DashboardView(utils_views.AjaxMixin, utils_views.TemplateView):
@@ -291,3 +293,20 @@ class TagListView(utils_views.AjaxMixin, utils_views.ListView):
             action=getattr(self, 'action', None),
             error=getattr(self, 'error', None),
             **context)
+
+
+class CustomSlideViewSet(rest_api.viewsets.ModelViewSet):
+    """
+    API endpoint to view, edit and delete custom slides.
+    """
+    model = CustomSlide
+    queryset = CustomSlide.objects.all()
+    serializer_class = CustomSlideSerializer
+
+    def check_permissions(self, request):
+        """
+        Calls self.permission_denied() if the requesting user has not the
+        permission to manage.
+        """
+        if not request.user.has_perm('core.can_manage_projector'):
+            self.permission_denied(request)
diff --git a/openslides/global_settings.py b/openslides/global_settings.py
index 1c1141e05..ff00236aa 100644
--- a/openslides/global_settings.py
+++ b/openslides/global_settings.py
@@ -88,6 +88,7 @@ INSTALLED_APPS = (
     'mptt',
     'haystack',  # full-text-search
     'ckeditor',
+    'rest_framework',
     'openslides.poll',
     'openslides.core',
     'openslides.account',
diff --git a/openslides/urls.py b/openslides/urls.py
index 774e2ba0c..31191e2ae 100644
--- a/openslides/urls.py
+++ b/openslides/urls.py
@@ -3,6 +3,7 @@ from django.conf.urls import include, patterns, url
 
 from openslides.core.views import ErrorView
 from openslides.utils.plugins import get_urlpatterns
+from openslides.utils.rest_api import router
 
 handler403 = ErrorView.as_view(status_code=403)
 handler404 = ErrorView.as_view(status_code=404)
@@ -31,6 +32,13 @@ urlpatterns += patterns(
     (r'^ckeditor/', include('ckeditor.urls')),
 )
 
+urlpatterns += patterns(
+    '',
+    url(r'^api/', include(router.urls)),
+    # TODO: Remove the next line if you are sure.
+    # url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework'))
+)
+
 # TODO: move this patterns into core or the participant app
 from openslides.users.views import UserSettingsView, UserPasswordSettingsView
 urlpatterns += patterns(
diff --git a/openslides/users/apps.py b/openslides/users/apps.py
index 33b66a983..a58dfec76 100644
--- a/openslides/users/apps.py
+++ b/openslides/users/apps.py
@@ -15,7 +15,9 @@ class UsersAppConfig(AppConfig):
         from openslides.config.signals import config_signal
         from openslides.core.signals import post_database_setup
         from openslides.projector.api import register_slide_model
+        from openslides.utils.rest_api import router
         from .signals import create_builtin_groups_and_admin, setup_users_config, user_post_save
+        from .views import UserViewSet
 
         # Load User model.
         User = self.get_model('User')
@@ -27,3 +29,6 @@ class UsersAppConfig(AppConfig):
 
         # Register slides.
         register_slide_model(User, 'participant/user_slide.html')
+
+        # Register viewset.
+        router.register('users/user', UserViewSet)
diff --git a/openslides/users/serializers.py b/openslides/users/serializers.py
new file mode 100644
index 000000000..96c5fcbd8
--- /dev/null
+++ b/openslides/users/serializers.py
@@ -0,0 +1,15 @@
+from rest_framework import serializers
+
+from .models import User
+
+
+class UserSerializer(serializers.ModelSerializer):
+    """
+    Serializer for a users.models.User objects.
+    """
+    class Meta:
+        model = User
+        fields = (
+            'username',
+            'first_name',
+            'last_name')
diff --git a/openslides/users/views.py b/openslides/users/views.py
index fe6c87759..665a26beb 100644
--- a/openslides/users/views.py
+++ b/openslides/users/views.py
@@ -6,6 +6,7 @@ from django.core.urlresolvers import reverse
 from django.utils.translation import ugettext as _, ugettext_lazy, activate
 
 from openslides.config.api import config
+from openslides.utils import rest_api
 from openslides.utils.utils import delete_default_permissions, html_strong
 from openslides.utils.views import (
     CreateView, CSVImportView, DeleteView, DetailView, FormView, ListView,
@@ -19,6 +20,7 @@ from .forms import (GroupForm, UserCreateForm, UserMultipleCreateForm,
                     UsersettingsForm, UserUpdateForm)
 from .models import Group, User
 from .pdf import users_to_pdf, users_passwords_to_pdf
+from .serializers import UserSerializer
 
 
 class UserListView(ListView):
@@ -259,6 +261,24 @@ class ResetPasswordView(SingleObjectMixin, QuestionView):
         return _('The Password for %s was successfully reset.') % html_strong(self.get_object())
 
 
+class UserViewSet(rest_api.viewsets.ModelViewSet):
+    """
+    API endpoint to view, edit and delete users.
+    """
+    model = User
+    queryset = User.objects.all()
+    serializer_class = UserSerializer
+
+    def check_permissions(self, request):
+        """
+        Calls self.permission_denied() if the requesting user has not the
+        permission to manage.
+        """
+        # TODO: More work on this required.
+        if not request.user.has_perm('users.can_manage'):
+            self.permission_denied(request)
+
+
 class GroupListView(ListView):
     """
     Overview over all groups.
diff --git a/openslides/utils/rest_api.py b/openslides/utils/rest_api.py
new file mode 100644
index 000000000..8fc21f00e
--- /dev/null
+++ b/openslides/utils/rest_api.py
@@ -0,0 +1,3 @@
+from rest_framework import permissions, routers, viewsets  # noqa
+
+router = routers.DefaultRouter()
diff --git a/requirements_production.txt b/requirements_production.txt
index d129cec6f..532cf54f8 100644
--- a/requirements_production.txt
+++ b/requirements_production.txt
@@ -5,6 +5,7 @@ bleach>=1.4,<1.5
 django-ckeditor-updated>=4.2.3,<4.4
 django-haystack>=2.1,<2.4
 django-mptt>=0.6,<0.7
+djangorestframework>=3.0.1,<3.1
 jsonfield>=0.9.19,<1.1
 natsort>=3.2,<3.6
 reportlab>=3.0,<3.2