diff --git a/litellm/proxy/agent_session_endpoints/warm_pool/transports/__init__.py b/litellm/proxy/agent_session_endpoints/warm_pool/transports/__init__.py
new file mode 100644
index 00000000000..7de11fcf929
--- /dev/null
+++ b/litellm/proxy/agent_session_endpoints/warm_pool/transports/__init__.py
@@ -0,0 +1,23 @@
+"""Hydrate transports — how the payload reaches the warm VM.
+
+We chose **SSM RunCommand push** based on B0's 1700ms median warm-attach
+latency (LIT-2888). The long-poll alternative is intentionally not shipped
+in this PR — it can be added later by implementing the same
+``HydrateTransport`` protocol.
+
+Public surface:
+- ``HydrateTransport`` — protocol every transport implements
+- ``SSMHydrateTransport`` — the production transport
+"""
+
+from litellm.proxy.agent_session_endpoints.warm_pool.transports.ssm import (
+    HydrateTransport,
+    HydrateTransportError,
+    SSMHydrateTransport,
+)
+
+__all__ = [
+    "HydrateTransport",
+    "HydrateTransportError",
+    "SSMHydrateTransport",
+]