diff --git a/internal/handler/routes_authenticated.go b/internal/handler/routes_authenticated.go
index 31dd39e..b127f80 100644
--- a/internal/handler/routes_authenticated.go
+++ b/internal/handler/routes_authenticated.go
@@ -72,6 +72,9 @@ func registerAuthenticatedRoutes(api *gin.RouterGroup, cfg *config.Config, svc *
 		authed.GET("/favourites", listFavouritesHandler(svc))
 		authed.POST("/favourites/:id", toggleFavouriteHandler(svc))
 
+		// Storage breakdown.
+		authed.GET("/storage", storageBreakdownHandler(svc))
+
 		authed.GET("/playlists", listPlaylistsHandler(svc))
 		authed.POST("/playlists", createPlaylistHandler(svc))
 		authed.GET("/playlists/:id", getPlaylistHandler(svc))
@@ -112,8 +115,6 @@ func registerAuthenticatedRoutes(api *gin.RouterGroup, cfg *config.Config, svc *
 		authed.DELETE("/files", middleware.AdminRequired(), deleteFileHandler(svc))
 		authed.POST("/files/transfer", middleware.AdminRequired(), transferFileHandler(svc))
 
-// 		// Disk usage breakdown.
-
 		// DLNA discovery + cast.
 		authed.GET("/dlna/devices", dlnaListHandler(svc))
 		authed.POST("/dlna/cast", dlnaCastHandler(svc))
diff --git a/internal/handler/storage.go b/internal/handler/storage.go
new file mode 100644
index 0000000..8697587
--- /dev/null
+++ b/internal/handler/storage.go
@@ -0,0 +1,20 @@
+package handler
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	"github.com/ShukeBta/MediaStationGo/internal/service"
+)
+
+func storageBreakdownHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		breakdown, err := svc.Storage.Compute(c.Request.Context())
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, breakdown)
+	}
+}
diff --git a/internal/handler/storage_test.go b/internal/handler/storage_test.go
new file mode 100644
index 0000000..6aa4240
--- /dev/null
+++ b/internal/handler/storage_test.go
@@ -0,0 +1,27 @@
+package handler
+
+import (
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+
+	"github.com/ShukeBta/MediaStationGo/internal/config"
+	"github.com/ShukeBta/MediaStationGo/internal/service"
+)
+
+func TestStorageRouteIsRegistered(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	router := gin.New()
+	Register(router, &config.Config{
+		Secrets: config.SecretsConfig{JWTSecret: "test-secret"},
+	}, zap.NewNop(), &service.Container{Log: zap.NewNop()})
+
+	for _, route := range router.Routes() {
+		if route.Method == "GET" && route.Path == "/api/storage" {
+			return
+		}
+	}
+	t.Fatal("GET /api/storage route is not registered")
+}