diff --git a/packages/jupyter-ai/jupyter_ai/chat_handlers/ask.py b/packages/jupyter-ai/jupyter_ai/chat_handlers/ask.py
index 90bf0aef2..a75f66fff 100644
--- a/packages/jupyter-ai/jupyter_ai/chat_handlers/ask.py
+++ b/packages/jupyter-ai/jupyter_ai/chat_handlers/ask.py
@@ -15,6 +15,7 @@ class AskChatHandler(BaseChatHandler):
     query the documents from the index, and sends this context
     to the LLM to generate the final reply.
     """
+
     id = "ask-chat-handler"
     name = "Ask with Local Data"
     description = "Ask a question augmented with learned data"
diff --git a/packages/jupyter-ai/jupyter_ai/chat_handlers/base.py b/packages/jupyter-ai/jupyter_ai/chat_handlers/base.py
index 5dde7f6ff..fe0daada5 100644
--- a/packages/jupyter-ai/jupyter_ai/chat_handlers/base.py
+++ b/packages/jupyter-ai/jupyter_ai/chat_handlers/base.py
@@ -9,7 +9,6 @@
 from jupyter_ai.config_manager import ConfigManager, Logger
 from jupyter_ai.models import AgentChatMessage, HumanChatMessage
 from jupyter_ai_magics.providers import BaseProvider
-
 from traitlets.config import Configurable
 
 if TYPE_CHECKING:
@@ -19,15 +18,17 @@
 class BaseChatHandler(Configurable):
     """Base ChatHandler class containing shared methods and attributes used by
     multiple chat handler classes."""
-    
+
     # Class attributes
-    id: str = 'base-chat-handler' 
+    id: str = "base-chat-handler"
     """ID for this chat handler; should be unique"""
 
-    name: str = 'Base Chat Handler'  # TODO: make NotImplemented
+    name: str = "Base Chat Handler"  # TODO: make NotImplemented
     """User-facing name of this handler"""
 
-    description: str = "Handler for messages that are not commands"  # TODO: make NotImplemented
+    description: str = (
+        "Handler for messages that are not commands"  # TODO: make NotImplemented
+    )
     """Description used for routing requests, to be used when dispatching
     messages to model providers. Also shown in the UI."""
 
diff --git a/packages/jupyter-ai/jupyter_ai/extension.py b/packages/jupyter-ai/jupyter_ai/extension.py
index 54f42e8c8..e5541dd46 100644
--- a/packages/jupyter-ai/jupyter_ai/extension.py
+++ b/packages/jupyter-ai/jupyter_ai/extension.py
@@ -1,8 +1,8 @@
-from importlib_metadata import entry_points
 import logging
 import time
 
 from dask.distributed import Client as DaskClient
+from importlib_metadata import entry_points
 from jupyter_ai.chat_handlers.learn import Retriever
 from jupyter_ai_magics.utils import get_em_providers, get_lm_providers
 from jupyter_server.extension.application import ExtensionApp
@@ -95,7 +95,7 @@ def initialize_settings(self):
             "root_dir": self.serverapp.root_dir,
             "dask_client_future": dask_client_future,
             # TODO: Set ask_chat_handler based on a retriever related to the learn_chat_handler
-            "retriever": None
+            "retriever": None,
         }
 
         for chat_handler_ep in chat_handler_eps:
@@ -116,8 +116,10 @@ def initialize_settings(self):
                 command_name = f"/{slash_id}"
             else:
                 command_name = "default"
-            self.log.info(f"Trying to register chat handler `{chat_handler.id}` with command `{command_name}`")
-            
+            self.log.info(
+                f"Trying to register chat handler `{chat_handler.id}` with command `{command_name}`"
+            )
+
             if command_name in jai_chat_handlers:
                 self.log.error(
                     f"Unable to register chat handler `{chat_handler.id}` because command `{command_name}` already has a handler"
@@ -125,8 +127,10 @@ def initialize_settings(self):
                 continue
 
             jai_chat_handlers[command_name] = chat_handler
-            self.log.info(f"Registered chat handler `{chat_handler.id}` with command `{command_name}`.")
-            
+            self.log.info(
+                f"Registered chat handler `{chat_handler.id}` with command `{command_name}`."
+            )
+
         self.settings["jai_chat_handlers"] = jai_chat_handlers
 
         """