diff --git a/letta/server/rest_api/routers/v1/agents.py b/letta/server/rest_api/routers/v1/agents.py
index 240b286b..1490f775 100644
--- a/letta/server/rest_api/routers/v1/agents.py
+++ b/letta/server/rest_api/routers/v1/agents.py
@@ -33,7 +33,7 @@ from letta.otel.metric_registry import MetricRegistry
 from letta.schemas.agent import AgentState, CreateAgent, UpdateAgent
 from letta.schemas.agent_file import AgentFileSchema
 from letta.schemas.block import Block, BlockUpdate
-from letta.schemas.enums import RunStatus
+from letta.schemas.enums import AgentType, RunStatus
 from letta.schemas.file import AgentFileAttachment, PaginatedAgentFiles
 from letta.schemas.group import Group
 from letta.schemas.job import LettaRequestConfig
@@ -1659,7 +1659,7 @@ async def send_message_async(
         agent_state = await server.agent_manager.get_agent_by_id_async(
             agent_id, actor, include_relationships=["memory", "multi_agent_group", "sources", "tool_exec_environment_variables", "tools"]
         )
-        if agent_state.multi_agent_group is None:
+        if agent_state.multi_agent_group is None and agent_state.agent_type != AgentType.letta_v1_agent:
             temporal_agent = TemporalAgent(agent_state=agent_state, actor=actor)
             await temporal_agent.step(
                 input_messages=request.messages,
diff --git a/tests/integration_test_send_message_v2.py b/tests/integration_test_send_message_v2.py
index 37ed101f..e73da147 100644
--- a/tests/integration_test_send_message_v2.py
+++ b/tests/integration_test_send_message_v2.py
@@ -178,6 +178,20 @@ async def accumulate_chunks(chunks: List[Any], verify_token_streaming: bool = Fa
     return [m for m in messages if m is not None]
 
 
+async def wait_for_run_completion(client: AsyncLetta, run_id: str, timeout: float = 30.0, interval: float = 0.5) -> Run:
+    start = time.time()
+    while True:
+        run = await client.runs.retrieve(run_id)
+        if run.status == "completed":
+            return run
+        if run.status == "failed":
+            print(run)
+            raise RuntimeError(f"Run {run_id} did not complete: status = {run.status}")
+        if time.time() - start > timeout:
+            raise TimeoutError(f"Run {run_id} did not complete within {timeout} seconds (last status: {run.status})")
+        time.sleep(interval)
+
+
 # ------------------------------
 # Fixtures
 # ------------------------------
@@ -261,8 +275,8 @@ async def agent_state(client: AsyncLetta) -> AgentState:
     TESTED_LLM_CONFIGS,
     ids=[c.model for c in TESTED_LLM_CONFIGS],
 )
-@pytest.mark.parametrize("send_type", ["step", "stream_steps", "stream_tokens"])
-@pytest.mark.asyncio(scope="function")
+@pytest.mark.parametrize("send_type", ["step", "stream_steps", "stream_tokens", "async"])
+@pytest.mark.asyncio(loop_scope="function")
 async def test_greeting(
     disable_e2b_api_key: Any,
     client: AsyncLetta,
@@ -279,6 +293,14 @@ async def test_greeting(
             messages=USER_MESSAGE_FORCE_REPLY,
         )
         messages = response.messages
+    elif send_type == "async":
+        run = await client.agents.messages.create_async(
+            agent_id=agent_state.id,
+            messages=USER_MESSAGE_FORCE_REPLY,
+        )
+        run = await wait_for_run_completion(client, run.id)
+        messages = await client.runs.messages.list(run_id=run.id)
+        messages = [m for m in messages if m.message_type != "user_message"]
     else:
         response = client.agents.messages.create_stream(
             agent_id=agent_state.id,