Add public waitlist and usage counts for the marketing site.

Counts stay aggregate, and joining the waitlist does not create an account.
Closes #74.

Co-authored-by: Cursor <cursoragent@cursor.com>

llm_be/chat_backend/migrations/0034_waitlistentry.py

@@ -0,0 +1,37 @@
+# Generated by Django 6.0 on 2026-10-17
+
+import django.utils.timezone
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("chat_backend", "0033_agentrun_agentstep"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="WaitlistEntry",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("created", models.DateTimeField(default=django.utils.timezone.now)),
+                (
+                    "last_modified",
+                    models.DateTimeField(default=django.utils.timezone.now),
+                ),
+                ("email", models.EmailField(max_length=254, unique=True)),
+            ],
+            options={
+                "ordering": ["-created"],
+            },
+        ),
+    ]

llm_be/chat_backend/models.py

@@ -799,3 +799,15 @@ class StoredFile(TimeInfoBase):
 
     def __str__(self):
         return self.name
+
+
+class WaitlistEntry(TimeInfoBase):
+    """Email captured from the public site when self-serve registration is off."""
+
+    email = models.EmailField(unique=True)
+
+    class Meta:
+        ordering = ["-created"]
+
+    def __str__(self):
+        return self.email

llm_be/chat_backend/tests/test_public_marketing.py

@@ -0,0 +1,65 @@
+from django.contrib.auth import get_user_model
+from django.urls import reverse
+from rest_framework.test import APITestCase
+
+from chat_backend.models import Document, WaitlistEntry
+from chat_backend.tests.factories import make_company, make_document, make_user, make_workspace
+
+
+class PublicUsageViewTests(APITestCase):
+    def test_counts_active_accounts_and_documents_without_personal_data(self):
+        company = make_company()
+        make_user(email="active@example.com", company=company)
+        inactive = make_user(email="inactive@example.com")
+        inactive.is_active = False
+        inactive.save(update_fields=["is_active"])
+        deleted = make_user(email="deleted@example.com")
+        deleted.deleted = True
+        deleted.save(update_fields=["deleted"])
+        make_document(make_workspace(company=company))
+
+        response = self.client.get(reverse("public_usage"))
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(
+            set(response.data.keys()),
+            {"account_count", "document_count", "as_of"},
+        )
+        self.assertEqual(response.data["account_count"], 1)
+        self.assertEqual(response.data["document_count"], Document.objects.count())
+        self.assertIn("T", response.data["as_of"])
+        body = response.content.decode()
+        self.assertNotIn("active@example.com", body)
+        self.assertNotIn("avatar", body)
+
+    def test_does_not_require_authentication(self):
+        response = self.client.get(reverse("public_usage"))
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.data["account_count"], 0)
+
+
+class PublicWaitlistViewTests(APITestCase):
+    def test_stores_an_email_once(self):
+        url = reverse("public_waitlist")
+        first = self.client.post(url, {"email": " Person@Example.com "}, format="json")
+        second = self.client.post(url, {"email": "person@example.com"}, format="json")
+
+        self.assertEqual(first.status_code, 200)
+        self.assertEqual(second.status_code, 200)
+        self.assertEqual(first.data["detail"], "You're on the list.")
+        self.assertEqual(second.data["detail"], "You're on the list.")
+        self.assertEqual(WaitlistEntry.objects.count(), 1)
+        self.assertEqual(WaitlistEntry.objects.get().email, "person@example.com")
+        self.assertEqual(get_user_model().objects.count(), 0)
+
+    def test_rejects_a_bad_email(self):
+        response = self.client.post(
+            reverse("public_waitlist"), {"email": "not-an-email"}, format="json"
+        )
+        self.assertEqual(response.status_code, 400)
+        self.assertEqual(WaitlistEntry.objects.count(), 0)
+
+    def test_rejects_a_missing_email(self):
+        response = self.client.post(reverse("public_waitlist"), {}, format="json")
+        self.assertEqual(response.status_code, 400)
+        self.assertEqual(WaitlistEntry.objects.count(), 0)

llm_be/chat_backend/urls.py

@@ -9,6 +9,8 @@ from .views import (
     LogoutAndBlacklistRefreshTokenForUserView,
     CustomUserGet,
     PublicSettingsView,
+    PublicUsageView,
+    PublicWaitlistView,
     is_authenticated,
     AnnouncmentView,
     FeedbackView,
@@ -46,6 +48,8 @@ urlpatterns = [
     path("token/refresh/", jwt_views.TokenRefreshView.as_view(), name="token_refresh"),
     path("user/create/", CustomUserCreate.as_view(), name="create_user"),
     path("public/settings/", PublicSettingsView.as_view(), name="public_settings"),
+    path("public/usage/", PublicUsageView.as_view(), name="public_usage"),
+    path("public/waitlist/", PublicWaitlistView.as_view(), name="public_waitlist"),
     path(
         "auth/oauth/<str:provider>/start/",
         OAuthStartView.as_view(),

llm_be/chat_backend/views.py

@@ -32,6 +32,7 @@ from .models import (
     DocumentWorkspace,
     Document,
     UserAuthEvent,
+    WaitlistEntry,
 )
 from django.views.decorators.cache import never_cache
 from django.http import JsonResponse
@@ -127,6 +128,55 @@ class PublicSettingsView(APIView):
         )
 
 
+class PublicUsageView(APIView):
+    """Aggregate counts for the public site. No emails, names, or avatars."""
+
+    permission_classes = (permissions.AllowAny,)
+    authentication_classes = ()
+
+    def get(self, request):
+        from django.utils import timezone
+
+        return Response(
+            {
+                "account_count": CustomUser.objects.filter(
+                    deleted=False, is_active=True
+                ).count(),
+                "document_count": Document.objects.count(),
+                "as_of": timezone.now().isoformat(),
+            }
+        )
+
+
+class PublicWaitlistView(APIView):
+    """Store a waitlist email. Same response for new and existing addresses."""
+
+    permission_classes = (permissions.AllowAny,)
+    authentication_classes = ()
+
+    def post(self, request):
+        from django.core.exceptions import ValidationError
+        from django.core.validators import validate_email
+
+        raw = request.data.get("email") if isinstance(request.data, dict) else None
+        email = str(raw or "").strip().lower()
+        if len(email) > 254:
+            return Response(
+                {"detail": "Enter a valid email."},
+                status=status.HTTP_400_BAD_REQUEST,
+            )
+        try:
+            validate_email(email)
+        except ValidationError:
+            return Response(
+                {"detail": "Enter a valid email."},
+                status=status.HTTP_400_BAD_REQUEST,
+            )
+
+        WaitlistEntry.objects.get_or_create(email=email)
+        return Response({"detail": "You're on the list."}, status=status.HTTP_200_OK)
+
+
 class CustomUserCreate(APIView):
     """Self-serve registration. Gated by ENABLE_ACCOUNT_REGISTRATION (default off)."""