diff --git a/nummi/api/__init__.py b/nummi/api/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/nummi/api/admin.py b/nummi/api/admin.py
new file mode 100644
index 0000000..8c38f3f
--- /dev/null
+++ b/nummi/api/admin.py
@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.
diff --git a/nummi/api/apps.py b/nummi/api/apps.py
new file mode 100644
index 0000000..878e7d5
--- /dev/null
+++ b/nummi/api/apps.py
@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class ApiConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "api"
diff --git a/nummi/api/migrations/__init__.py b/nummi/api/migrations/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/nummi/api/models.py b/nummi/api/models.py
new file mode 100644
index 0000000..71a8362
--- /dev/null
+++ b/nummi/api/models.py
@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.
diff --git a/nummi/api/tests.py b/nummi/api/tests.py
new file mode 100644
index 0000000..7ce503c
--- /dev/null
+++ b/nummi/api/tests.py
@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.
diff --git a/nummi/api/urls.py b/nummi/api/urls.py
new file mode 100644
index 0000000..cb74a80
--- /dev/null
+++ b/nummi/api/urls.py
@@ -0,0 +1,11 @@
+from django.urls import path
+
+from . import views
+
+urlpatterns = [
+    path("transactions", views.TransactionListView.as_view(), name="transactions"),
+    path("categories", views.CategoryListView.as_view(), name="categories"),
+    path("accounts", views.AccountListView.as_view(), name="accounts"),
+    path("snapshots", views.SnapshotListView.as_view(), name="snapshots"),
+    path("history", views.HistoryView.as_view(), name="history"),
+]
diff --git a/nummi/api/views.py b/nummi/api/views.py
new file mode 100644
index 0000000..876d5fd
--- /dev/null
+++ b/nummi/api/views.py
@@ -0,0 +1,51 @@
+from django.db.models import Sum
+from django.db.models.functions import ExtractQuarter, ExtractYear
+from django.http import JsonResponse
+from django.views import View
+from django.views.generic.list import MultipleObjectMixin
+
+from main.models import Account, Category, Snapshot, Transaction
+from main.views import UserMixin
+
+
+class TransactionListView(UserMixin, MultipleObjectMixin, View):
+    model = Transaction
+
+    def get(self, request, *args, **kwargs):
+        return JsonResponse({"transactions": list(self.get_queryset().values())})
+
+
+class CategoryListView(UserMixin, MultipleObjectMixin, View):
+    model = Category
+
+    def get(self, request, *args, **kwargs):
+        return JsonResponse({"categories": list(self.get_queryset().values())})
+
+
+class AccountListView(UserMixin, MultipleObjectMixin, View):
+    model = Account
+
+    def get(self, request, *args, **kwargs):
+        return JsonResponse({"accounts": list(self.get_queryset().values())})
+
+
+class SnapshotListView(UserMixin, MultipleObjectMixin, View):
+    model = Snapshot
+
+    def get(self, request, *args, **kwargs):
+        return JsonResponse({"snapshots": list(self.get_queryset().values())})
+
+
+class HistoryView(UserMixin, MultipleObjectMixin, View):
+    model = Transaction
+
+    def get(self, request, *args, **kwargs):
+        return JsonResponse(
+            {
+                "data": list(
+                    self.get_queryset()
+                    .values("category__name", quarter=ExtractQuarter("date"), year=ExtractYear("date"))
+                    .annotate(Sum("value"))
+                )
+            }
+        )
diff --git a/nummi/nummi/urls.py b/nummi/nummi/urls.py
index 14d3517..a888c80 100644
--- a/nummi/nummi/urls.py
+++ b/nummi/nummi/urls.py
@@ -20,6 +20,7 @@ from django.urls import include, path
 urlpatterns = i18n_patterns(
     path("", include("main.urls")),
     path("plot/", include("plot.urls")),
+    path("api/", include("api.urls")),
     path("admin/", admin.site.urls),
     prefix_default_language=False,
 )