diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..1ac480e
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,53 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    name: Build and Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '>=1.25'
+          cache: true
+
+      - name: Verify dependencies
+        run: |
+          go mod tidy
+          if [ -n "$(git status --porcelain)" ]; then
+            echo "Error: go.mod/go.sum are not tidy. Please run 'go mod tidy'."
+            git status
+            exit 1
+          fi
+
+      - name: Run tests
+        run: go test -v -race ./...
+
+      - name: Build check
+        run: go build -o /dev/null -v ./cmd/cli/main.go
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '>=1.25'
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v6
+        with:
+          version: latest