diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
new file mode 100644
index 0000000..6b787ac
--- /dev/null
+++ b/.github/workflows/pr.yml
@@ -0,0 +1,49 @@
+name: PR
+
+on:
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+      - name: Check formatting
+        run: |
+          UNFORMATTED="$(gofmt -l .)"
+          if [ -n "$UNFORMATTED" ]; then
+            echo "The following files are not gofmt-formatted:"
+            echo "$UNFORMATTED"
+            exit 1
+          fi
+      - name: Vet
+        run: go vet ./...
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+      - uses: bazel-contrib/setup-bazel@0.19.0
+      - name: Build Go CLI
+        run: go build ./cmd/moltark
+      - name: Build Bazel target
+        run: bazel build //:moltark
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+      - uses: bazel-contrib/setup-bazel@0.19.0
+      - name: Go tests
+        run: go test ./...
+      - name: Bazel tests
+        run: bazel test //...