diff --git a/pyproject.toml b/pyproject.toml
index ed8fed64..fec54f75 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@
     alchemy_easy = ["sqlalchemy", "psycopg2_binary"]
     alchemy_hard = ["sqlalchemy", "psycopg2"]
     bard = ["ffmpeg_python", "youtube_dl"]
-    constellation = ["starlette", "uvicorn"]
+    constellation = ["starlette", "uvicorn", "python-multipart"]
     sentry = ["sentry_sdk"]
     herald = ["websockets"]
     coloredlogs = ["coloredlogs"]
diff --git a/royalnet/commands/event.py b/royalnet/commands/event.py
index af77a1ae..761bccbf 100644
--- a/royalnet/commands/event.py
+++ b/royalnet/commands/event.py
@@ -15,15 +15,25 @@ class Event:
         self.interface: CommandInterface = interface
         """The :class:`CommandInterface` available to this :class:`Event`."""
 
+    @property
+    def serf(self):
+        """A shortcut for :attr:`.interface.serf`."""
+        return self.interface.serf
+
     @property
     def alchemy(self):
-        """A shortcut for :attr:`.interface.serf.alchemy`."""
-        return self.interface.serf.alchemy
+        """A shortcut for :attr:`.interface.alchemy`."""
+        return self.interface.alchemy
 
     @property
     def loop(self):
-        """A shortcut for :attr:`.interface.serf.loop`"""
-        return self.interface.serf.loop
+        """A shortcut for :attr:`.interface.loop`."""
+        return self.interface.loop
+
+    @property
+    def config(self):
+        """A shortcut for :attr:`.interface.config`."""
+        return self.interface.config
 
     async def run(self, **kwargs):
         raise NotImplementedError()
diff --git a/royalnet/serf/serf.py b/royalnet/serf/serf.py
index c5655512..9265ce64 100644
--- a/royalnet/serf/serf.py
+++ b/royalnet/serf/serf.py
@@ -166,7 +166,7 @@ class Serf:
                 response: rh.Response = await self.herald.request(destination=destination, request=request)
                 if isinstance(response, rh.ResponseFailure):
                     if response.name == "no_event":
-                        raise CommandError(f"There is no event named {event_name} in {destination}.")
+                        raise ProgramError(f"There is no event named {event_name} in {destination}.")
                     elif response.name == "error_in_event":
                         if response.extra_info["type"] == "CommandError":
                             raise CommandError(response.extra_info["message"])