diff --git a/.github/actions/libextism/action.yml b/.github/actions/libextism/action.yml
new file mode 100644
index 0000000..cd36dc2
--- /dev/null
+++ b/.github/actions/libextism/action.yml
@@ -0,0 +1,15 @@
+on: [workflow_call]
+
+name: libextism
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/checkout@v3
+      with:
+        repository: extism/cli
+        path: .extism-cli
+    - uses: ./.extism-cli/.github/actions/extism-cli
+    - name: Install
+      shell: bash
+      run: sudo extism lib install --version git
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..afbf875
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,36 @@
+name: CI
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test-example:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ./.github/actions/libextism
+
+      - name: Install WASI SDK
+        run: |
+          bash install-wasi-sdk.sh
+          echo '$WASI_SDK_PATH="'$(pwd)'"/wasi-sdk' >> $GITHUB_ENV
+
+      - name: Example
+        run: |
+          cd examples/count-vowels
+          TEST=$(make run)
+          echo $TEST | grep '"count": 4'
+
+          
+      - name: Tests
+        if: matrix.os != 'macos-latest'
+        run: |
+          cd tests
+          make test
diff --git a/install-wasi-sdk.sh b/install-wasi-sdk.sh
new file mode 100755
index 0000000..5046e2b
--- /dev/null
+++ b/install-wasi-sdk.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+# Orignal from: https://github.com/Shopify/javy
+
+set -euo pipefail
+
+PATH_TO_SDK="./wasi-sdk"
+if [[ ! -d $PATH_TO_SDK ]]; then
+    TMPGZ=$(mktemp)
+    VERSION_MAJOR="22"
+    VERSION_MINOR="0"
+    if [[ "$(uname -s)" == "Darwin" ]]; then
+        curl --fail --location --silent https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${VERSION_MAJOR}/wasi-sdk-${VERSION_MAJOR}.${VERSION_MINOR}-macos.tar.gz --output $TMPGZ
+    else
+        curl --fail --location --silent https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${VERSION_MAJOR}/wasi-sdk-${VERSION_MAJOR}.${VERSION_MINOR}-linux.tar.gz --output $TMPGZ
+    fi
+    mkdir $PATH_TO_SDK
+    tar xf $TMPGZ -C $PATH_TO_SDK --strip-components=1
+fi