diff --git a/.github/workflows/content-build.yml b/.github/workflows/content-build.yml
new file mode 100644
index 0000000..50d7b90
--- /dev/null
+++ b/.github/workflows/content-build.yml
@@ -0,0 +1,19 @@
+name: content-build
+on:
+  push:
+    paths: ["content/**", "tools/content_build/**", ".github/workflows/content-build.yml"]
+  pull_request:
+    paths: ["content/**", "tools/content_build/**"]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - run: pip install -r tools/requirements-dev.txt
+      - name: Unit tests
+        run: PYTHONPATH=tools python -m pytest tools/content_build/tests -q
+      - name: Content freshness + validity
+        run: PYTHONPATH=tools python -m content_build --check