diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000000..39bbd2681d
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,4 @@
+{
+  "image": "mcr.microsoft.com/devcontainers/universal:2",
+  "features": {}
+}
diff --git a/.github/workflows/pr-triage.yml b/.github/workflows/pr-triage.yml
index 6557820f04..8842194683 100644
--- a/.github/workflows/pr-triage.yml
+++ b/.github/workflows/pr-triage.yml
@@ -34,7 +34,7 @@ jobs:
 
       - name: Run Triaging Script
         env:
-          GITHUB_TOKEN: ${{ secrets.ADK_TRIAGE_AGENT }}
+          GITHUB_TOKEN: ${{ secrets.ADK_TRIAGE_AGENT || github.token }}
           GOOGLE_API_KEY: ${{ secrets.GOOGLE_API_KEY }}
           GOOGLE_GENAI_USE_VERTEXAI: 0
           OWNER: 'google'
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
new file mode 100644
index 0000000000..e56abb6303
--- /dev/null
+++ b/.github/workflows/python-package.yml
@@ -0,0 +1,40 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
+
+name: Python package
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9", "3.10", "3.11"]
+
+    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
+        python -m pip install flake8 pytest
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Test with pytest
+      run: |
+        pytest
diff --git a/.github/workflows/v2-sync.yml b/.github/workflows/v2-sync.yml
index c627f40d46..7b2acb0a75 100644
--- a/.github/workflows/v2-sync.yml
+++ b/.github/workflows/v2-sync.yml
@@ -19,7 +19,7 @@ jobs:
         with:
           ref: v2
           fetch-depth: 0
-          token: ${{ secrets.RELEASE_PAT }}
+          token: ${{ secrets.RELEASE_PAT || github.token }}
 
       - name: Check for new commits on main
         id: check
@@ -50,7 +50,7 @@ jobs:
       - name: Create sync PR
         if: steps.check.outputs.behind != '0' && steps.existing.outputs.exists == 'false'
         env:
-          GH_TOKEN: ${{ secrets.RELEASE_PAT }}
+          GH_TOKEN: ${{ secrets.RELEASE_PAT || github.token }}
         run: |
           gh pr create \
             --base v2 \
diff --git a/tests/unittests/integrations/crewai/test_crewai_tool.py b/tests/unittests/integrations/crewai/test_crewai_tool.py
index f7f9bfe0bd..9e6c4c29fd 100644
--- a/tests/unittests/integrations/crewai/test_crewai_tool.py
+++ b/tests/unittests/integrations/crewai/test_crewai_tool.py
@@ -16,9 +16,13 @@
 
 import pytest
 
-# Skip entire module if Python < 3.10 (must be before crewai_tool import)
+# Skip entire module if crewai is not installed (must be before crewai_tool import).
+# exc_type=ImportError is required because crewai_tool.py re-raises the
+# ModuleNotFoundError as ImportError, which pytest 9.1+ does not catch by default.
 pytest.importorskip(
-    "google.adk.integrations.crewai.crewai_tool", reason="Requires Python 3.10+"
+    "google.adk.integrations.crewai.crewai_tool",
+    reason="Requires crewai package (pip install 'google-adk[extensions]')",
+    exc_type=ImportError,
 )
 
 from google.adk.agents.context import Context