diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
new file mode 100644
index 0000000..2a3b980
--- /dev/null
+++ b/.github/workflows/format.yml
@@ -0,0 +1,26 @@
+name: Format
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.head_ref }}
+      - uses: pnpm/action-setup@v3
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18
+          cache: "pnpm"
+      - run: pnpm install
+      - run: pnpm run format
+      - uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_message: "[ci] format"
+          branch: ${{ github.head_ref }}
+          commit_author: ${{ github.event.commits[0].author.name }} <${{ github.actor }}@users.noreply.github.com>