diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 5a379183e33..db6b0ebfce4 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -927,9 +927,33 @@ async def proxy_startup_event(app: FastAPI):  # noqa: PLR0915
     ## Initialize shared aiohttp session for connection reuse
     shared_aiohttp_session = await _initialize_shared_aiohttp_session()
 
+    ## /v2/agents+sessions cleanup sweeper (Epic A — Cursor SDK).
+    ## Idempotent; safe even if the agent_session_endpoints module never
+    ## sees traffic.
+    try:
+        from litellm.proxy.agent_session_endpoints.cleanup import (
+            start_cleanup_sweeper,
+        )
+
+        start_cleanup_sweeper()
+    except Exception as exc:
+        verbose_proxy_logger.warning(
+            "agent_session_endpoints cleanup sweeper failed to start: %s", exc
+        )
+
     # End of startup event
     yield
 
+    ## Stop the agent session cleanup sweeper.
+    try:
+        from litellm.proxy.agent_session_endpoints.cleanup import (
+            stop_cleanup_sweeper,
+        )
+
+        stop_cleanup_sweeper()
+    except Exception:
+        pass
+
     # Shutdown event - close shared aiohttp session
     if shared_aiohttp_session is not None:
         try:
@@ -14883,6 +14907,27 @@ app.include_router(ui_discovery_endpoints_router)
 # Eager: /models/{name}:method overlaps with the OpenAI /models endpoint.
 app.include_router(google_router)
 
+# /v2/agents, /v2/sessions — Cursor SDK agent runtime (Epic A).
+# Mounted under /v2/ to avoid collision with the existing /v1/agents
+# (A2A registry in litellm/proxy/agent_endpoints/).
+from litellm.proxy.agent_session_endpoints import (
+    agent_router as agent_session_agent_router,
+)
+from litellm.proxy.agent_session_endpoints import (
+    internal_router as agent_session_internal_router,
+)
+from litellm.proxy.agent_session_endpoints import (
+    run_router as agent_session_run_router,
+)
+from litellm.proxy.agent_session_endpoints import (
+    session_router as agent_session_session_router,
+)
+
+app.include_router(agent_session_agent_router)
+app.include_router(agent_session_session_router)
+app.include_router(agent_session_run_router)
+app.include_router(agent_session_internal_router)
+
 attach_lazy_features(app)
 app.add_middleware(
     RequestSizeLimitMiddleware,