diff --git a/surfsense_backend/app/agents/chat/multi_agent_chat/shared/citations/__init__.py b/surfsense_backend/app/agents/chat/multi_agent_chat/shared/citations/__init__.py
new file mode 100644
index 000000000..f722717e9
--- /dev/null
+++ b/surfsense_backend/app/agents/chat/multi_agent_chat/shared/citations/__init__.py
@@ -0,0 +1,16 @@
+"""Citation registry: maps model-facing ``[n]`` labels to real sources.
+
+Server-side only; the model sees only the bare ``[n]``.
+"""
+
+from __future__ import annotations
+
+from .models import CitationEntry, CitationSourceType
+from .registry import CitationRegistry, make_key
+
+__all__ = [
+    "CitationEntry",
+    "CitationRegistry",
+    "CitationSourceType",
+    "make_key",
+]