diff --git a/cmd/k8s_apply.go b/cmd/k8s_apply.go
new file mode 100644
index 0000000..98959b2
--- /dev/null
+++ b/cmd/k8s_apply.go
@@ -0,0 +1,36 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/aryansharma9917/codewise-cli/pkg/k8s"
+	"github.com/spf13/cobra"
+)
+
+var k8sNamespace string
+
+var k8sApplyCmd = &cobra.Command{
+	Use:   "apply",
+	Short: "Apply Kubernetes manifests to the current cluster",
+	Run: func(cmd *cobra.Command, args []string) {
+		if err := k8s.CheckKubectl(); err != nil {
+			fmt.Println("info:", err.Error())
+			return
+		}
+
+		if err := k8s.CheckCluster(); err != nil {
+			fmt.Println("info:", err.Error())
+			return
+		}
+
+		if err := k8s.ApplyManifests(k8sNamespace); err != nil {
+			fmt.Println("info:", err.Error())
+			return
+		}
+	},
+}
+
+func init() {
+	k8sApplyCmd.Flags().StringVar(&k8sNamespace, "namespace", "", "Kubernetes namespace for deployment")
+	k8sCmd.AddCommand(k8sApplyCmd)
+}
diff --git a/pkg/config/config.go b/pkg/config/config.go
index e07c69a..e1be9ac 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -19,9 +19,10 @@ type Config struct {
 		Name string `yaml:"name"`
 	} `yaml:"user"`
 	Defaults struct {
-		AppName string `yaml:"app_name"`
-		Image   string `yaml:"image"`
-		RepoURL string `yaml:"repo_url"`
+		AppName   string `yaml:"app_name"`
+		Image     string `yaml:"image"`
+		RepoURL   string `yaml:"repo_url"`
+		Namespace string `yaml:"namespace"`
 	} `yaml:"defaults"`
 }
 
@@ -32,6 +33,7 @@ defaults:
   app_name: myapp
   image: codewise:latest
   repo_url: https://github.com/example/repo
+  namespace: default
 `)
 
 func InitConfig() (string, error) {
diff --git a/pkg/k8s/apply.go b/pkg/k8s/apply.go
new file mode 100644
index 0000000..dee21d8
--- /dev/null
+++ b/pkg/k8s/apply.go
@@ -0,0 +1,59 @@
+package k8s
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"github.com/aryansharma9917/codewise-cli/pkg/config"
+)
+
+func CheckKubectl() error {
+	_, err := exec.LookPath("kubectl")
+	if err != nil {
+		return errors.New("kubectl not found in PATH")
+	}
+	return nil
+}
+
+func CheckCluster() error {
+	cmd := exec.Command("kubectl", "version", "--short")
+	if err := cmd.Run(); err != nil {
+		return errors.New("cluster unreachable or misconfigured")
+	}
+	return nil
+}
+
+func resolveNamespace(flag string) string {
+	if flag != "" {
+		return flag
+	}
+
+	cfg, err := config.ReadConfig()
+	if err == nil && cfg.Defaults.Namespace != "" {
+		return cfg.Defaults.Namespace
+	}
+
+	return "default"
+}
+
+func ApplyManifests(namespace string) error {
+	path := filepath.Join("k8s", "app")
+
+	if _, err := os.Stat(path); err != nil {
+		return fmt.Errorf("no manifests found at %s", path)
+	}
+
+	namespace = resolveNamespace(namespace)
+
+	args := []string{"apply", "-f", path, "-n", namespace}
+
+	cmd := exec.Command("kubectl", args...)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	fmt.Println("running: kubectl", args)
+	return cmd.Run()
+}