diff --git a/src/backend/routers/internal.py b/src/backend/routers/internal.py
new file mode 100644
index 000000000..b382482a1
--- /dev/null
+++ b/src/backend/routers/internal.py
@@ -0,0 +1,21 @@
+"""
+Internal agent-to-backend endpoints (no authentication required).
+
+These endpoints are called by agent containers on the Docker network
+to communicate back to the backend. They are not exposed externally.
+"""
+from fastapi import APIRouter
+import logging
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(
+    prefix="/api/internal",
+    tags=["internal"],
+)
+
+
+@router.get("/health")
+async def internal_health():
+    """Internal health check for agent containers."""
+    return {"status": "ok"}