diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 00000000..94d110b3
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,37 @@
+name: "CodeQL"
+on:
+  workflow_dispatch:
+  #push:
+  #  branches: [master]
+  #pull_request:
+  #  branches: [master]
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ["python"]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+    
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        queries: security-and-quality
+    
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v2
+    
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2
\ No newline at end of file
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
deleted file mode 100644
index e97d89e4..00000000
--- a/.github/workflows/docs.yml
+++ /dev/null
@@ -1,38 +0,0 @@
-on:
-  pull_request:
-    branches:
-      - main
-name: docs
-jobs:
-  docs:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - name: Setup Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: "3.9"
-    - name: Install nox
-      run: |
-        python -m pip install --upgrade setuptools pip wheel
-        python -m pip install nox
-    - name: Run docs
-      run: |
-        nox -s docs
-  docfx:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - name: Setup Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: "3.9"
-    - name: Install nox
-      run: |
-        python -m pip install --upgrade setuptools pip wheel
-        python -m pip install nox
-    - name: Run docfx
-      run: |
-        nox -s docfx
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
deleted file mode 100644
index d2aee5b7..00000000
--- a/.github/workflows/lint.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-on:
-  pull_request:
-    branches:
-      - main
-name: lint
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - name: Setup Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: "3.10"
-    - name: Install nox
-      run: |
-        python -m pip install --upgrade setuptools pip wheel
-        python -m pip install nox
-    - name: Run lint
-      run: |
-        nox -s lint
-    - name: Run lint_setup_py
-      run: |
-        nox -s lint_setup_py
diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
deleted file mode 100644
index a505525d..00000000
--- a/.github/workflows/mypy.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-on:
-  pull_request:
-    branches:
-      - main
-name: mypy
-jobs:
-  mypy:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - name: Setup Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: "3.10"
-    - name: Install nox
-      run: |
-        python -m pip install --upgrade setuptools pip wheel
-        python -m pip install nox
-    - name: Run mypy
-      run: |
-        nox -s mypy
diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
deleted file mode 100644
index 0d7789b6..00000000
--- a/.github/workflows/unittest.yml
+++ /dev/null
@@ -1,74 +0,0 @@
-name: "Unit tests"
-
-on:
-  pull_request:
-    branches:
-      - main
-
-jobs:
-  run-unittests:
-    name: unit${{ matrix.option }}-${{ matrix.python }}
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        option: ["", "_grpc_gcp", "_wo_grpc"]
-        python:
-          - "3.7"
-          - "3.8"
-          - "3.9"
-          - "3.10"
-          - "3.11"
-        exclude:
-          - option: "_wo_grpc"
-            python: 3.7
-          - option: "_wo_grpc"
-            python: 3.8
-          - option: "_wo_grpc"
-            python: 3.9
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - name: Setup Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python }}
-    - name: Install nox
-      run: |
-        python -m pip install --upgrade setuptools pip wheel
-        python -m pip install nox
-    - name: Run unit tests
-      env:
-        COVERAGE_FILE: .coverage${{ matrix.option }}-${{matrix.python }}
-      run: |
-        nox -s unit${{ matrix.option }}-${{ matrix.python }}
-    - name: Upload coverage results
-      uses: actions/upload-artifact@v3
-      with:
-        name: coverage-artifacts
-        path: .coverage${{ matrix.option }}-${{ matrix.python }}
-
-  report-coverage:
-    name: cover
-    runs-on: ubuntu-latest
-    needs:
-        - run-unittests
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - name: Setup Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: "3.10"
-    - name: Install coverage
-      run: |
-        python -m pip install --upgrade setuptools pip wheel
-        python -m pip install coverage
-    - name: Download coverage results
-      uses: actions/download-artifact@v3
-      with:
-        name: coverage-artifacts
-        path: .coverage-results/
-    - name: Report coverage results
-      run: |
-        coverage combine .coverage-results/.coverage*
-        coverage report --show-missing --fail-under=100