diff --git a/internal/app/action/action.go b/internal/app/action/action.go
index 628edaf..e7f9268 100644
--- a/internal/app/action/action.go
+++ b/internal/app/action/action.go
@@ -53,12 +53,13 @@ type Action struct {
 	LightTheme        string
 	DarkTheme         string
 	containerProxyUrl string
+	hidden            map[string]bool // params which are not shown in the UI
 }
 
 // NewAction creates a new action
 func NewAction(logger *types.Logger, sourceFS *appfs.SourceFs, isDev bool, name, description, apath string, run, suggest starlark.Callable,
 	params []apptype.AppParam, paramValuesStr map[string]string, paramDict starlark.StringDict,
-	appPath string, styleType types.StyleType, containerProxyUrl string) (*Action, error) {
+	appPath string, styleType types.StyleType, containerProxyUrl string, hidden []string) (*Action, error) {
 
 	funcMap := system.GetFuncMap()
 
@@ -97,6 +98,11 @@ func NewAction(logger *types.Logger, sourceFS *appfs.SourceFs, isDev bool, name,
 		pagePath = ""
 	}
 
+	hiddenParams := make(map[string]bool)
+	for _, h := range hidden {
+		hiddenParams[h] = true
+	}
+
 	return &Action{
 		Logger:            &appLogger,
 		isDev:             isDev,
@@ -112,6 +118,7 @@ func NewAction(logger *types.Logger, sourceFS *appfs.SourceFs, isDev bool, name,
 		actionTemplate:    tmpl,
 		StyleType:         styleType,
 		containerProxyUrl: containerProxyUrl,
+		hidden:            hiddenParams,
 		// AppTemplate and Theme names are initialized later
 	}, nil
 }
@@ -551,7 +558,7 @@ func (a *Action) getForm(w http.ResponseWriter, r *http.Request) {
 	}
 
 	for _, p := range a.params {
-		if strings.HasPrefix(p.Name, OPTIONS_PREFIX) {
+		if strings.HasPrefix(p.Name, OPTIONS_PREFIX) || a.hidden[p.Name] {
 			continue
 		}
 
diff --git a/internal/app/apptype/builtins.go b/internal/app/apptype/builtins.go
index 091cd1d..c9ad28c 100644
--- a/internal/app/apptype/builtins.go
+++ b/internal/app/apptype/builtins.go
@@ -297,16 +297,22 @@ func createLibraryBuiltin(_ *starlark.Thread, _ *starlark.Builtin, args starlark
 func createActionBuiltin(_ *starlark.Thread, _ *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
 	var name, desc, path starlark.String
 	var suggest, executor starlark.Callable
+	var hidden *starlark.List
 	if err := starlark.UnpackArgs(ACTION, args, kwargs, "name", &name, "path", &path,
-		"run", &executor, "suggest?", &suggest, "description?", &desc); err != nil {
+		"run", &executor, "suggest?", &suggest, "description?", &desc, "hidden?", &hidden); err != nil {
 		return nil, fmt.Errorf("error unpacking action args: %w", err)
 	}
 
+	if hidden == nil {
+		hidden = starlark.NewList([]starlark.Value{})
+	}
+
 	fields := starlark.StringDict{
 		"name":        name,
 		"description": desc,
 		"path":        path,
 		"run":         executor,
+		"hidden":      hidden,
 	}
 
 	if suggest != nil {
diff --git a/internal/app/setup.go b/internal/app/setup.go
index 1d241dc..9b1db11 100644
--- a/internal/app/setup.go
+++ b/internal/app/setup.go
@@ -509,6 +509,7 @@ func (a *App) addAction(count int, val starlark.Value, router *chi.Mux) error {
 
 	var name, path, description string
 	var run, suggest starlark.Callable
+	var hidden []string
 	var err error
 	if name, err = apptype.GetStringAttr(actionDef, "name"); err != nil {
 		return err
@@ -522,7 +523,9 @@ func (a *App) addAction(count int, val starlark.Value, router *chi.Mux) error {
 	if run, err = apptype.GetCallableAttr(actionDef, "run"); err != nil {
 		return err
 	}
-
+	if hidden, err = apptype.GetListStringAttr(actionDef, "hidden", true); err != nil {
+		return err
+	}
 	sa, _ := actionDef.Attr("suggest")
 	if sa != nil {
 		if suggest, err = apptype.GetCallableAttr(actionDef, "suggest"); err != nil {
@@ -539,7 +542,7 @@ func (a *App) addAction(count int, val starlark.Value, router *chi.Mux) error {
 	}
 	action, err := action.NewAction(a.Logger, a.sourceFS, a.IsDev, name, description, path, run, suggest,
 		slices.Collect(maps.Values(a.paramInfo)), a.paramValuesStr, a.paramDict, a.Path, a.appStyle.GetStyleType(),
-		containerProxyUrl)
+		containerProxyUrl, hidden)
 	if err != nil {
 		return fmt.Errorf("error creating action %s: %w", name, err)
 	}
diff --git a/internal/app/tests/appaction_test.go b/internal/app/tests/appaction_test.go
index 7508d9d..e89b9fd 100644
--- a/internal/app/tests/appaction_test.go
+++ b/internal/app/tests/appaction_test.go
@@ -588,11 +588,12 @@ def handler(dry_run, args):
 	return ace.result(status="done", values=["a", "b"], param_errors={"param1": "param1error", "param3": "param3error"})
 
 app = ace.app("testApp",
-	actions=[ace.action("testAction", "/", handler)])
+	actions=[ace.action("testAction", "/", handler, hidden=["param2"])])
 
 		`,
 		"params.star": `param("param1", description="param1 description", type=STRING, default="myvalue")
-param("options-param1", description="param1 options", type=LIST, default=["a", "b", "c"])`,
+param("options-param1", description="param1 options", type=LIST, default=["a", "b", "c"])
+param("param2", description="param2 description", type=STRING, default="myvalue2")`,
 	}
 	a, _, err := CreateTestApp(logger, fileData)
 	if err != nil {
@@ -610,6 +611,9 @@ param("options-param1", description="param1 options", type=LIST, default=["a", "
 	if strings.Contains(bodyStripped, `options-param1`) {
 		t.Errorf("options-param1 should not be in the body")
 	}
+	if strings.Contains(bodyStripped, `param2`) {
+		t.Errorf("hidden param2 should not be in the body")
+	}
 }
 
 func TestActionError(t *testing.T) {