diff --git a/.github/workflows/pr-and-push.yml b/.github/workflows/pr-and-push.yml
index b558943dd..a9c694c9f 100644
--- a/.github/workflows/pr-and-push.yml
+++ b/.github/workflows/pr-and-push.yml
@@ -17,3 +17,18 @@ jobs:
       contents: read
     with:
       ref: ${{ github.event.pull_request.head.sha }}
+
+  check-api:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+    - uses: actions/checkout@v5
+      with:
+        fetch-depth: 0  # We the need the full Git history.
+    - uses: astral-sh/setup-uv@v6
+    - run: |
+        if ! uvx griffe check --search src --format github strands --against "${{ github.event.pull_request.base.sha || github.event.before || 'HEAD' }}"; then
+          echo "Breaking API changes detected"
+          exit 1
+        fi