diff --git a/.gitignore b/.gitignore
index 246d7df9..0c6eb7b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -129,6 +129,7 @@ venv/
 ENV/
 env.bak/
 venv.bak/
+.env.tmp
 
 # Spyder project settings
 .spyderproject
diff --git a/src/askui/chat/api/runs/events/io_publisher.py b/src/askui/chat/api/runs/events/io_publisher.py
new file mode 100644
index 00000000..f0893010
--- /dev/null
+++ b/src/askui/chat/api/runs/events/io_publisher.py
@@ -0,0 +1,43 @@
+"""IO publisher for publishing events to stdout."""
+
+import json
+import sys
+from typing import Any
+
+from askui.chat.api.runs.events.events import Event
+from askui.chat.api.settings import Settings
+
+
+class IOPublisher:
+    """Publisher that serializes events to JSON and writes to stdout."""
+
+    def __init__(self, enabled: bool) -> None:
+        """
+        Initialize the IO publisher.
+
+        Args:
+            settings: The settings instance containing configuration for the IO publisher.
+        """
+        self._enabled = enabled
+
+    def publish(self, event: Event) -> None:
+        """
+        Publish an event by serializing it to JSON and writing to stdout.
+
+        If the publisher is disabled, this method does nothing.
+
+        Args:
+            event: The event to publish
+        """
+        if not self._enabled:
+            return
+
+        try:
+            event_dict: dict[str, Any] = event.model_dump(mode="json")
+            event_json = json.dumps(event_dict)
+
+            sys.stdout.write(event_json + "\n")
+            sys.stdout.flush()
+        except (TypeError, ValueError, AttributeError, OSError) as e:
+            sys.stderr.write(f"Error publishing event: {e}\n")
+            sys.stderr.flush()
diff --git a/src/askui/chat/api/runs/service.py b/src/askui/chat/api/runs/service.py
index 5e785935..726c29f9 100644
--- a/src/askui/chat/api/runs/service.py
+++ b/src/askui/chat/api/runs/service.py
@@ -12,6 +12,7 @@
 from askui.chat.api.messages.chat_history_manager import ChatHistoryManager
 from askui.chat.api.models import RunId, ThreadId, WorkspaceId
 from askui.chat.api.runs.events.events import DoneEvent, ErrorEvent, Event, RunEvent
+from askui.chat.api.runs.events.io_publisher import IOPublisher
 from askui.chat.api.runs.events.service import EventService
 from askui.chat.api.runs.models import (
     Run,
@@ -43,6 +44,7 @@ def __init__(
         self._chat_history_manager = chat_history_manager
         self._settings = settings
         self._event_service = EventService(settings.data_dir, self)
+        self._io_publisher = IOPublisher(settings.enable_io_events)
 
     def _find_by_id(
         self, workspace_id: WorkspaceId | None, thread_id: ThreadId, run_id: RunId
@@ -136,6 +138,7 @@ async def run_runner() -> None:
                                 if isinstance(event, DoneEvent) or isinstance(
                                     event, ErrorEvent
                                 ):
+                                    self._io_publisher.publish(event)
                                     break
                             except anyio.EndOfStream:
                                 break
diff --git a/src/askui/chat/api/settings.py b/src/askui/chat/api/settings.py
index 7b463d00..59f7a117 100644
--- a/src/askui/chat/api/settings.py
+++ b/src/askui/chat/api/settings.py
@@ -118,3 +118,7 @@ class Settings(BaseSettings):
         default_factory=OtelSettings,
         description="OpenTelemetry configuration settings",
     )
+    enable_io_events: bool = Field(
+        default=False,
+        description="Whether to enable the publishing events to stdout",
+    )