diff --git a/.github/workflows/syntax-check.yml b/.github/workflows/syntax-check.yml
new file mode 100644
index 0000000..d501ca8
--- /dev/null
+++ b/.github/workflows/syntax-check.yml
@@ -0,0 +1,46 @@
+name: Python Syntax Check
+
+on:
+  push:
+    branches: ['**']
+  pull_request:
+    branches: ['**']
+
+jobs:
+  syntax-check:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+
+      - name: Install ruff
+        run: uv tool install ruff
+
+      - name: Get changed Python files
+        id: changed-files
+        uses: tj-actions/changed-files@v45
+        with:
+          files: |
+            **/*.py
+
+      - name: Run ruff format check
+        if: steps.changed-files.outputs.any_changed == 'true'
+        run: |
+          echo "Changed files: ${{ steps.changed-files.outputs.all_changed_files }}"
+          uv tool run ruff format --check ${{ steps.changed-files.outputs.all_changed_files }}
+
+      - name: Run ruff check
+        if: steps.changed-files.outputs.any_changed == 'true'
+        run: |
+          uv tool run ruff check ${{ steps.changed-files.outputs.all_changed_files }}
diff --git a/src/talk_python_cli/formatting.py b/src/talk_python_cli/formatting.py
index f6257f0..d0712dd 100644
--- a/src/talk_python_cli/formatting.py
+++ b/src/talk_python_cli/formatting.py
@@ -68,7 +68,7 @@ def display_json(content: str) -> None:
     """Output JSON content — pretty-printed if on a TTY, raw otherwise."""
     try:
         data = json.loads(content)
-    except json.JSONDecodeError, TypeError:
+    except (json.JSONDecodeError, TypeError):
         # Server may have returned Markdown even though JSON was requested;
         # fall back to printing the raw text.
         console.print(content)