diff --git a/.github/workflows/safety-net.yml b/.github/workflows/safety-net.yml
new file mode 100644
index 0000000000..c2791d52e9
--- /dev/null
+++ b/.github/workflows/safety-net.yml
@@ -0,0 +1,24 @@
+name: Safety Net
+# This is just to make sure no one slips in a modified workflow or tools.
+
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/**'
+      - 'tools/**'
+    branches:
+      - main
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Runs a set of commands using the runners shell
+      - name: Safety Check
+        run: |
+          exit 255