diff --git a/openhands/automation/presets/plugin/sdk_main.py b/openhands/automation/presets/plugin/sdk_main.py
index e6174ce..e2e6606 100644
--- a/openhands/automation/presets/plugin/sdk_main.py
+++ b/openhands/automation/presets/plugin/sdk_main.py
@@ -299,6 +299,10 @@ def event_callback(event) -> None:
         delete_on_close=False,  # Keep conversation history after completion
     )
     assert isinstance(conversation, RemoteConversation)
+
+    # Register conversation ID with workspace for completion callback
+    workspace.register_conversation(str(conversation.id))
+
     print(f"  conversation created: {type(conversation).__name__}")
     print(f"  plugins loaded: {len(plugin_sources)}")
 
diff --git a/openhands/automation/presets/prompt/sdk_main.py b/openhands/automation/presets/prompt/sdk_main.py
index 2f884d7..4032e61 100644
--- a/openhands/automation/presets/prompt/sdk_main.py
+++ b/openhands/automation/presets/prompt/sdk_main.py
@@ -287,6 +287,10 @@ def event_callback(event) -> None:
         delete_on_close=False,  # Keep conversation history after completion
     )
     assert isinstance(conversation, RemoteConversation)
+
+    # Register conversation ID with workspace for completion callback
+    workspace.register_conversation(str(conversation.id))
+
     print(f"  conversation created: {type(conversation).__name__}")
 
     # Inject secrets into the conversation (as LookupSecret references)