diff --git a/.github/reusable-steps/setup-os/action.yml b/.github/reusable-steps/setup-os/action.yml
new file mode 100644
index 00000000..13a63c95
--- /dev/null
+++ b/.github/reusable-steps/setup-os/action.yml
@@ -0,0 +1,16 @@
+name: OS setup
+
+runs:
+  using: 'composite'
+  steps:
+    - name: Install coreutils
+      if: runner.os == 'macOS'
+      shell: bash
+      run: |
+        brew install coreutils
+    - name: Install virtual display
+      if: runner.os == 'Linux'
+      shell: bash
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y xvfb
diff --git a/.github/reusable-steps/setup-python/action.yml b/.github/reusable-steps/setup-python/action.yml
new file mode 100644
index 00000000..db182900
--- /dev/null
+++ b/.github/reusable-steps/setup-python/action.yml
@@ -0,0 +1,29 @@
+name: Python setup
+
+inputs:
+  python:
+    required: true
+  project:
+    required: true
+
+runs:
+  using: 'composite'
+  steps:
+    - name: Download sample video file
+      shell: bash
+      run: |
+        cd ${{ inputs.project }}
+        curl -L -o sample_video.mp4 https://sample-videos.com/video321/mp4/720/big_buck_bunny_720p_1mb.mp4
+    - name: Set up Python ${{ inputs.python }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ inputs.python }}
+    - name: Install dependencies
+      shell: bash
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r ${{ inputs.project }}/requirements.txt
+    - name: List dependencies
+      shell: bash
+      run: |
+        pip list
diff --git a/.github/reusable-steps/timeouted-action/action.yml b/.github/reusable-steps/timeouted-action/action.yml
new file mode 100644
index 00000000..bc256dde
--- /dev/null
+++ b/.github/reusable-steps/timeouted-action/action.yml
@@ -0,0 +1,25 @@
+name: Run action with timeout
+
+inputs:
+  command:
+    required: true
+  project:
+    required: true
+  timeout:
+    required: false
+    default: 1h
+
+runs:
+  using: 'composite'
+  steps:
+    - name: Run JS Project
+      shell: bash
+      run: |
+        cd ${{ inputs.project }}
+        # linux requires a virtual display
+        if [ "${{ runner.os }}" == "Linux" ]; then
+          # the timeout trick "gracefully" kills the app after specified time (waiting for user input otherwise) 
+          timeout ${{ inputs.timeout }} xvfb-run ${{ inputs.command }} || [[ $? -eq 124 ]]
+        else 
+          timeout ${{ inputs.timeout }} ${{ inputs.command }} || [[ $? -eq 124 ]]
+        fi
diff --git a/.github/workflows/sanity-check.yml b/.github/workflows/sanity-check.yml
new file mode 100644
index 00000000..d6ea84d8
--- /dev/null
+++ b/.github/workflows/sanity-check.yml
@@ -0,0 +1,158 @@
+name: Sanity check
+
+on:
+  schedule:
+    - cron: "0 2 * * *"
+
+permissions:
+  contents: read
+
+jobs:
+  find-subprojects:
+    runs-on: ubuntu-latest
+    outputs:
+      notebook: ${{ steps.categorize-subprojects.outputs.notebook }}
+      gradio: ${{ steps.categorize-subprojects.outputs.gradio }}
+      webcam: ${{ steps.categorize-subprojects.outputs.webcam }}
+      js: ${{ steps.categorize-subprojects.outputs.js }}
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Categorize subprojects
+        id: categorize-subprojects
+        run: |
+          notebook=()
+          gradio=()
+          webcam=()
+          js=()
+          
+          for dir in $(find demos -type d -mindepth 1 -maxdepth 1 ! -name utils); do
+            if [ -f "$dir/package.json" ]; then
+              js+=("$dir")
+            elif [ -f "$dir/main.ipynb" ]; then
+              notebook+=("$dir")
+            elif grep -q "gradio" "$dir/requirements.txt"; then
+              gradio+=("$dir")
+            elif grep -q -- "--stream" "$dir/main.py"; then
+              webcam+=("$dir")
+            fi
+          done
+
+          notebook_json=$(printf '%s\n' "${notebook[@]}" | jq -R -s -c 'split("\n")[:-1]')
+          gradio_json=$(printf '%s\n' "${gradio[@]}" | jq -R -s -c 'split("\n")[:-1]')
+          webcam_json=$(printf '%s\n' "${webcam[@]}" | jq -R -s -c 'split("\n")[:-1]')
+          js_json=$(printf '%s\n' "${js[@]}" | jq -R -s -c 'split("\n")[:-1]')
+          
+          echo "notebook=$notebook_json" | tee -a $GITHUB_OUTPUT
+          echo "gradio=$gradio_json" | tee -a $GITHUB_OUTPUT
+          echo "webcam=$webcam_json" | tee -a $GITHUB_OUTPUT
+          echo "js=$js_json" | tee -a $GITHUB_OUTPUT
+
+  notebook:
+    needs: find-subprojects
+    if: ${{ needs.find-subprojects.outputs.notebook != '[]' }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python: [3.11]
+        subproject: ${{ fromJson(needs.find-subprojects.outputs.notebook) }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python ${{ matrix.python }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python }}
+      - uses: ./.github/reusable-steps/setup-python
+        with:
+          python: ${{ matrix.python }}
+          project: ${{ matrix.subproject }}
+      - uses: ./.github/reusable-steps/timeouted-action
+        name: Run Notebook
+        with:
+          command: jupyter nbconvert --to notebook --execute main.ipynb
+          project: ${{ matrix.subproject }}
+
+  gradio:
+    needs: find-subprojects
+    if: ${{ needs.find-subprojects.outputs.gradio != '[]' }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python: [3.11]
+        subproject: ${{ fromJson(needs.find-subprojects.outputs.gradio) }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./.github/reusable-steps/setup-os
+      - name: Set up Python ${{ matrix.python }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python }}
+      - uses: ./.github/reusable-steps/setup-python
+        with:
+          python: ${{ matrix.python }}
+          project: ${{ matrix.subproject }}
+      - name: Login to HF
+        shell: bash
+        run: |
+          huggingface-cli login --token ${{ secrets.HF_TOKEN }}
+      - uses: ./.github/reusable-steps/timeouted-action
+        name: Run Gradio App
+        with:
+          command: python main.py
+          project: ${{ matrix.subproject }}
+          timeout: 30m
+
+  webcam:
+    needs: find-subprojects
+    if: ${{ needs.find-subprojects.outputs.webcam != '[]' }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python: [3.11]
+        subproject: ${{ fromJson(needs.find-subprojects.outputs.webcam) }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./.github/reusable-steps/setup-os
+      - uses: ./.github/reusable-steps/setup-python
+        with:
+          python: ${{ matrix.python }}
+          project: ${{ matrix.subproject }}
+      - uses: ./.github/reusable-steps/timeouted-action
+        name: Run Webcam Demo
+        with:
+          command: python main.py --stream sample_video.mp4
+          project: ${{ matrix.subproject }}
+          
+  js:
+    needs: find-subprojects
+    if: ${{ needs.find-subprojects.outputs.js != '[]' }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        subproject: ${{ fromJson(needs.find-subprojects.outputs.js) }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./.github/reusable-steps/setup-os
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+      - name: Install dependencies
+        run: |
+          cd ${{ matrix.subproject }}
+          npm install
+      - uses: ./.github/reusable-steps/timeouted-action
+        name: Run JS Project
+        with:
+          command: npm start
+          project: ${{ matrix.subproject }}
+          timeout: 1m