diff --git a/.github/workflows/pi.yml b/.github/workflows/pi.yml
new file mode 100644
index 00000000..60019050
--- /dev/null
+++ b/.github/workflows/pi.yml
@@ -0,0 +1,31 @@
+name: Pi Extensions
+
+on:
+  push:
+    paths:
+      - .pi/extensions/**
+      - mise.toml
+  pull_request:
+    paths:
+      - .pi/extensions/**
+      - mise.toml
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: Test pi extensions
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+
+      - uses: jdx/mise-action@5083fe46898c414b2475087cc79da59e7da859e8  # v2.1.11
+
+      - name: Test sensitive-file-guard
+        run: |
+          npm ci --prefix .pi/extensions/sensitive-file-guard
+          npm test --prefix .pi/extensions/sensitive-file-guard
+
+      - name: Test s3-browser
+        run: |
+          npm ci --prefix .pi/extensions/s3-browser
+          npm test --prefix .pi/extensions/s3-browser