diff --git a/core_service.go b/core_service.go
index 3bda6aa..ac78543 100644
--- a/core_service.go
+++ b/core_service.go
@@ -213,6 +213,46 @@ func (s *CoreService) Debug() bool {
 	return s.svc.Debug()
 }
 
+// AddHandler appends handlers to the wrapped service's chain.
+func (s *CoreService) AddHandler(handlers ...KeyHandler) {
+	s.svc.AddHandler(handlers...)
+}
+
+// SetHandlers replaces the wrapped service's handler chain.
+func (s *CoreService) SetHandlers(handlers ...KeyHandler) {
+	s.svc.SetHandlers(handlers...)
+}
+
+// PrependHandler inserts handlers at the front of the wrapped service's chain.
+func (s *CoreService) PrependHandler(handlers ...KeyHandler) {
+	s.svc.PrependHandler(handlers...)
+}
+
+// ClearHandlers removes all handlers from the wrapped service.
+func (s *CoreService) ClearHandlers() {
+	s.svc.ClearHandlers()
+}
+
+// ResetHandlers restores the wrapped service's default handler chain.
+func (s *CoreService) ResetHandlers() {
+	s.svc.ResetHandlers()
+}
+
+// Handlers returns a copy of the wrapped service's handler chain.
+func (s *CoreService) Handlers() []KeyHandler {
+	return s.svc.Handlers()
+}
+
+// AddLoader loads extra locale data into the wrapped service.
+func (s *CoreService) AddLoader(loader Loader) error {
+	return s.svc.AddLoader(loader)
+}
+
+// LoadFS loads locale data from a filesystem into the wrapped service.
+func (s *CoreService) LoadFS(fsys fs.FS, dir string) error {
+	return s.svc.LoadFS(fsys, dir)
+}
+
 // AvailableLanguages returns the wrapped service languages.
 func (s *CoreService) AvailableLanguages() []string {
 	return s.svc.AvailableLanguages()
diff --git a/hooks_test.go b/hooks_test.go
index b2148d9..b3d5bff 100644
--- a/hooks_test.go
+++ b/hooks_test.go
@@ -370,6 +370,38 @@ func TestCoreService_DelegatesToWrappedService(t *testing.T) {
 	assert.True(t, coreSvc.Debug())
 	coreSvc.SetDebug(false)
 	assert.False(t, coreSvc.Debug())
+
+	handlers := coreSvc.Handlers()
+	assert.Equal(t, svc.Handlers(), handlers)
+
+	coreSvc.SetHandlers(LabelHandler{})
+	require.Len(t, coreSvc.Handlers(), 1)
+	assert.IsType(t, LabelHandler{}, coreSvc.Handlers()[0])
+
+	coreSvc.AddHandler(ProgressHandler{})
+	require.Len(t, coreSvc.Handlers(), 2)
+	assert.IsType(t, ProgressHandler{}, coreSvc.Handlers()[1])
+
+	coreSvc.PrependHandler(CountHandler{})
+	require.Len(t, coreSvc.Handlers(), 3)
+	assert.IsType(t, CountHandler{}, coreSvc.Handlers()[0])
+
+	coreSvc.ClearHandlers()
+	assert.Empty(t, coreSvc.Handlers())
+
+	coreSvc.ResetHandlers()
+	require.NotEmpty(t, coreSvc.Handlers())
+	assert.IsType(t, LabelHandler{}, coreSvc.Handlers()[0])
+
+	require.NoError(t, coreSvc.AddLoader(NewFSLoader(fstest.MapFS{
+		"locales/en.json": &fstest.MapFile{Data: []byte(`{"core.service.loaded": "loaded"}`)},
+	}, "locales")))
+	assert.Equal(t, "loaded", coreSvc.T("core.service.loaded"))
+
+	require.NoError(t, coreSvc.LoadFS(fstest.MapFS{
+		"locales/en.json": &fstest.MapFile{Data: []byte(`{"core.service.loaded.fs": "loaded via fs"}`)},
+	}, "locales"))
+	assert.Equal(t, "loaded via fs", coreSvc.T("core.service.loaded.fs"))
 }
 
 func TestInit_ReDetectsRegisteredLocales(t *testing.T) {