diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f740e4d..7332eca 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,6 +3,8 @@ name: CI
 on:
   pull_request:
   workflow_dispatch:
+  merge_group:
+    types: [checks_requested]
 
 env:
   UV_FROZEN: "1"
diff --git a/.github/workflows/pylint.yml b/.github/workflows/pylint.yml
new file mode 100644
index 0000000..c73e032
--- /dev/null
+++ b/.github/workflows/pylint.yml
@@ -0,0 +1,23 @@
+name: Pylint
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.8", "3.9", "3.10"]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pylint
+    - name: Analysing the code with pylint
+      run: |
+        pylint $(git ls-files '*.py')
diff --git a/chatkit/server.py b/chatkit/server.py
index 5963ff8..fe29c66 100644
--- a/chatkit/server.py
+++ b/chatkit/server.py
@@ -306,7 +306,7 @@ def action(
     ) -> AsyncIterator[ThreadStreamEvent]:
         raise NotImplementedError(
             "The action() method must be overridden to react to actions. "
-            "See https://github.com/OpenAI-Early-Access/chatkit/blob/main/docs/widgets.md#widget-actions"
+            "See https://github.com/openai/chatkit-python/blob/main/docs/widgets.md#widget-actions"
         )
 
     async def process(
@@ -423,7 +423,10 @@ async def _process_streaming_impl(
                     created_at=datetime.now(),
                     items=Page(),
                 )
-                await self.store.save_thread(thread, context=context)
+                await self.store.save_thread(
+                    ThreadMetadata(**thread.model_dump()),
+                    context=context,
+                )
                 yield ThreadCreatedEvent(thread=self._to_thread_response(thread))
                 user_message = await self._build_user_message_item(
                     request.params.input, thread, context