diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..4a280f1
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,32 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run typecheck
+        run: npm run typecheck
+
+      - name: Run tests
+        run: npm test
\ No newline at end of file
diff --git a/README.md b/README.md
index 21ca72e..882fb09 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+[![CI](https://github.com/infralayers/mv3-proxy-kit/actions/workflows/ci.yml/badge.svg)](https://github.com/infralayers/mv3-proxy-kit/actions/workflows/ci.yml)
+
 # mv3-proxy-kit
 
 Open-source toolkit for building reliable Manifest V3 proxy/VPN browser extensions.