diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..2fc3db5
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,44 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+
+      - uses: pnpm/action-setup@v5
+
+      - uses: actions/setup-node@v7
+        with:
+          node-version: 24
+          cache: pnpm
+
+      - run: pnpm install --frozen-lockfile
+
+      - name: Test
+        run: pnpm test
+
+      - name: Build devtools UI
+        run: pnpm devtools:build
+
+      - name: Build Angular host app (SSR)
+        run: pnpm build
+
+      - name: Build Chrome extension
+        run: pnpm extension:build
+
+      - name: Smoke-test the CLI
+        run: node bin.mjs --help