diff --git a/main.go b/main.go
index aaf47fcf..80c8bf06 100644
--- a/main.go
+++ b/main.go
@@ -6,6 +6,7 @@ import (
 	"io"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"runtime/pprof"
 	"strings"
 	"syscall"
@@ -74,6 +75,13 @@ var (
 				if path, err := exec.LookPath("k3-" + args[0]); err == nil {
 					return proc.Exec(path, args[1:]...)
 				}
+				conf, err := project.NewConfig(project.WithK3())
+				if err != nil {
+					return fmt.Errorf("unknown command: %w", err)
+				}
+				if path, err := exec.LookPath(filepath.Join(conf.K3.Root, "libexec", "ntt-"+args[0])); err == nil {
+					return proc.Exec(path, args[1:]...)
+				}
 				return fmt.Errorf("unknown command: %s", args[0])
 			}
 
diff --git a/project/internal/k3/k3.go b/project/internal/k3/k3.go
index 51d5d9c1..abec10d8 100644
--- a/project/internal/k3/k3.go
+++ b/project/internal/k3/k3.go
@@ -28,7 +28,7 @@ import (
 var ErrNotFound = errors.New("not found")
 
 type Instance struct {
-	root string
+	Root string
 
 	Compiler  string
 	Runtime   string
@@ -169,7 +169,7 @@ func getInstall(ctx context.Context, prefix string) (*Instance, error) {
 	defer region.End()
 	log.Tracef(ctx, "k3", "get install: %s\n", prefix)
 
-	k := Instance{root: prefix}
+	k := Instance{Root: prefix}
 
 	if k3c := env.Getenv("K3C"); k3c != "" {
 		k.Compiler = k3c
@@ -234,7 +234,7 @@ func getRepo(ctx context.Context, k3SourceDir, k3BinaryDir, mtcBinaryDir string)
 	defer region.End()
 	log.Tracef(ctx, "k3", "get repo: %s %s %s\n", k3SourceDir, k3BinaryDir, mtcBinaryDir)
 
-	k := Instance{root: k3BinaryDir}
+	k := Instance{Root: k3BinaryDir}
 
 	if k3c := env.Getenv("K3C"); k3c != "" {
 		k.Compiler = k3c
diff --git a/project/project.go b/project/project.go
index ccd7b96e..1a29e88d 100644
--- a/project/project.go
+++ b/project/project.go
@@ -65,9 +65,6 @@ type Config struct {
 	ResultsFile string `json:"results_file"`
 
 	K3 struct {
-		// K3 root folder
-		Root string `json:",omitempty"`
-
 		k3.Instance `json:",inline"`
 
 		// T3XF is the path to the T3XF file.