diff --git a/hermes_cli/oneshot.py b/hermes_cli/oneshot.py
index f66d71c62e6d..cd3385b588a6 100644
--- a/hermes_cli/oneshot.py
+++ b/hermes_cli/oneshot.py
@@ -364,7 +364,19 @@ def _run_agent(
     agent.stream_delta_callback = None
     agent.tool_gen_callback = None
 
-    return agent.chat(prompt) or ""
+    response = agent.chat(prompt) or ""
+
+    # Join memory-provider daemon threads (e.g. Honcho's honcho-sync,
+    # honcho-prewarm-dialectic, honcho-context-prefetch) before the process
+    # exits.  Without this, CPython's Py_FinalizeEx force-terminates the
+    # still-running daemon threads via pthread_exit(), and glibc converts
+    # that forced unwind into abort() → SIGABRT → exit 134.  (#37632)
+    try:
+        agent.shutdown_memory_provider()
+    except Exception:
+        pass  # memory providers are strictly best-effort
+
+    return response
 
 
 def _oneshot_clarify_callback(question: str, choices=None) -> str:
diff --git a/tests/cli/test_oneshot_memory_shutdown.py b/tests/cli/test_oneshot_memory_shutdown.py
new file mode 100644
index 000000000000..cb02f551255b
--- /dev/null
+++ b/tests/cli/test_oneshot_memory_shutdown.py
@@ -0,0 +1,75 @@
+"""Regression test for #37632: oneshot mode must call shutdown_memory_provider.
+
+Without this, Honcho memory daemon threads (honcho-sync, honcho-prewarm-dialectic,
+honcho-context-prefetch) remain blocked in httpx I/O when the process exits.
+CPython's Py_FinalizeEx force-terminates them via pthread_exit(), and glibc
+converts that into abort() → SIGABRT → exit 134.
+"""
+
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+
+class TestOneshotMemoryShutdown:
+    """shutdown_memory_provider() must be called after agent.chat() in oneshot mode."""
+
+    @patch("hermes_cli.runtime_provider.resolve_runtime_provider")
+    @patch("hermes_cli.config.load_config")
+    @patch("hermes_cli.oneshot._create_session_db_for_oneshot", return_value=None)
+    @patch("hermes_cli.oneshot.get_fallback_chain", return_value=None)
+    @patch("run_agent.AIAgent")
+    def test_run_agent_calls_shutdown_after_chat(
+        self, MockAIAgent, mock_fb, mock_sdb, mock_load_config, mock_resolve
+    ):
+        """_run_agent must call agent.shutdown_memory_provider() after chat()."""
+        mock_load_config.return_value = {"model": {"default": "test-model", "provider": "test"}}
+        mock_resolve.return_value = {
+            "api_key": "test-key",
+            "base_url": "http://test",
+            "provider": "test",
+            "api_mode": "chat_completions",
+            "credential_pool": None,
+        }
+
+        mock_agent = MagicMock()
+        mock_agent.chat.return_value = "test response"
+        MockAIAgent.return_value = mock_agent
+
+        from hermes_cli.oneshot import _run_agent
+
+        result = _run_agent("test prompt")
+
+        assert result == "test response"
+        mock_agent.chat.assert_called_once_with("test prompt")
+        mock_agent.shutdown_memory_provider.assert_called_once()
+
+    @patch("hermes_cli.runtime_provider.resolve_runtime_provider")
+    @patch("hermes_cli.config.load_config")
+    @patch("hermes_cli.oneshot._create_session_db_for_oneshot", return_value=None)
+    @patch("hermes_cli.oneshot.get_fallback_chain", return_value=None)
+    @patch("run_agent.AIAgent")
+    def test_run_agent_shutdown_does_not_crash_on_error(
+        self, MockAIAgent, mock_fb, mock_sdb, mock_load_config, mock_resolve
+    ):
+        """shutdown_memory_provider raising must not crash _run_agent."""
+        mock_load_config.return_value = {"model": {"default": "test-model", "provider": "test"}}
+        mock_resolve.return_value = {
+            "api_key": "test-key",
+            "base_url": "http://test",
+            "provider": "test",
+            "api_mode": "chat_completions",
+            "credential_pool": None,
+        }
+
+        mock_agent = MagicMock()
+        mock_agent.chat.return_value = "test response"
+        mock_agent.shutdown_memory_provider.side_effect = RuntimeError("boom")
+        MockAIAgent.return_value = mock_agent
+
+        from hermes_cli.oneshot import _run_agent
+
+        # Must not raise despite shutdown_memory_provider failing
+        result = _run_agent("test prompt")
+        assert result == "test response"
+        mock_agent.shutdown_memory_provider.assert_called_once()