diff --git a/x/exp/schema/resolved/resolve.go b/x/exp/schema/resolved/resolve.go
index 82e9af2f..3b92eb78 100644
--- a/x/exp/schema/resolved/resolve.go
+++ b/x/exp/schema/resolved/resolve.go
@@ -49,9 +49,8 @@ type AppliesTo struct {
 
 // Action is a resolved action definition.
 type Action struct {
-	Name        types.String
+	Entity      types.Entity
 	Annotations Annotations
-	Parents     []types.EntityUID
 	AppliesTo   *AppliesTo
 }
 
@@ -307,13 +306,17 @@ func (r *resolverState) resolveActions(nsName types.Path, actions ast.Actions, r
 	for name, action := range actions {
 		actionTypeName := qualifyActionType(nsName)
 		uid := types.NewEntityUID(actionTypeName, types.String(name))
+		var parents []types.EntityUID
+		for _, ref := range action.Parents {
+			parents = append(parents, resolveActionParentRef(nsName, ref))
+		}
 		resolved := Action{
-			Name:        name,
+			Entity: types.Entity{
+				UID:     uid,
+				Parents: types.NewEntityUIDSet(parents...),
+			},
 			Annotations: Annotations(action.Annotations),
 		}
-		for _, ref := range action.Parents {
-			resolved.Parents = append(resolved.Parents, resolveActionParentRef(nsName, ref))
-		}
 		if action.AppliesTo != nil {
 			at := &AppliesTo{}
 			for _, p := range action.AppliesTo.Principals {
@@ -523,7 +526,7 @@ func (r *resolverState) validateActionMembership(result *Schema) error {
 
 	// Validate references and detect cycles
 	for uid, action := range result.Actions {
-		for _, parent := range action.Parents {
+		for parent := range action.Entity.Parents.All() {
 			if !actionUIDs[parent] {
 				return fmt.Errorf("action %s: undefined parent action %s", uid, parent)
 			}
@@ -542,7 +545,7 @@ func (r *resolverState) validateActionMembership(result *Schema) error {
 		}
 		visited[uid] = 1
 		action := result.Actions[uid]
-		for _, parent := range action.Parents {
+		for parent := range action.Entity.Parents.All() {
 			if err := visit(parent); err != nil {
 				return err
 			}
diff --git a/x/exp/schema/resolved/resolve_test.go b/x/exp/schema/resolved/resolve_test.go
index 3cb35e6f..b180c387 100644
--- a/x/exp/schema/resolved/resolve_test.go
+++ b/x/exp/schema/resolved/resolve_test.go
@@ -356,7 +356,7 @@ func TestResolveActionParents(t *testing.T) {
 	testutil.OK(t, err)
 	uid := types.NewEntityUID("Action", "view")
 	view := result.Actions[uid]
-	testutil.Equals(t, view.Parents, []types.EntityUID{types.NewEntityUID("Action", "readOnly")})
+	testutil.Equals(t, view.Entity.Parents, types.NewEntityUIDSet(types.NewEntityUID("Action", "readOnly")))
 }
 
 func TestResolveActionCycle(t *testing.T) {
@@ -482,7 +482,7 @@ func TestResolveActionQualifiedParent(t *testing.T) {
 	testutil.OK(t, err)
 	uid := types.NewEntityUID("NS::Action", "view")
 	view := result.Actions[uid]
-	testutil.Equals(t, view.Parents, []types.EntityUID{types.NewEntityUID("NS::Action", "readOnly")})
+	testutil.Equals(t, view.Entity.Parents, types.NewEntityUIDSet(types.NewEntityUID("NS::Action", "readOnly")))
 }
 
 func TestResolveActionContextNull(t *testing.T) {
diff --git a/x/exp/schema/schema_test.go b/x/exp/schema/schema_test.go
index 7bfb1b5f..5f743ff3 100644
--- a/x/exp/schema/schema_test.go
+++ b/x/exp/schema/schema_test.go
@@ -556,7 +556,7 @@ var wantResolved = &resolved.Schema{
 	},
 	Actions: map[types.EntityUID]resolved.Action{
 		types.NewEntityUID("Action", "audit"): {
-			Name: "audit",
+			Entity: types.Entity{UID: types.NewEntityUID("Action", "audit"), Parents: types.NewEntityUIDSet()},
 			AppliesTo: &resolved.AppliesTo{
 				Principals: []types.EntityType{"Admin"},
 				Resources:  []types.EntityType{"MyApp::Document", "System"},
@@ -564,7 +564,7 @@ var wantResolved = &resolved.Schema{
 			},
 		},
 		types.NewEntityUID("MyApp::Action", "edit"): {
-			Name:        "edit",
+			Entity:      types.Entity{UID: types.NewEntityUID("MyApp::Action", "edit"), Parents: types.NewEntityUIDSet()},
 			Annotations: resolved.Annotations{"doc": "View or edit document"},
 			AppliesTo: &resolved.AppliesTo{
 				Principals: []types.EntityType{"MyApp::User"},
@@ -576,7 +576,7 @@ var wantResolved = &resolved.Schema{
 			},
 		},
 		types.NewEntityUID("MyApp::Action", "manage"): {
-			Name: "manage",
+			Entity: types.Entity{UID: types.NewEntityUID("MyApp::Action", "manage"), Parents: types.NewEntityUIDSet()},
 			AppliesTo: &resolved.AppliesTo{
 				Principals: []types.EntityType{"MyApp::User"},
 				Resources:  []types.EntityType{"MyApp::Document", "MyApp::Group"},
@@ -584,7 +584,7 @@ var wantResolved = &resolved.Schema{
 			},
 		},
 		types.NewEntityUID("MyApp::Action", "view"): {
-			Name:        "view",
+			Entity:      types.Entity{UID: types.NewEntityUID("MyApp::Action", "view"), Parents: types.NewEntityUIDSet()},
 			Annotations: resolved.Annotations{"doc": "View or edit document"},
 			AppliesTo: &resolved.AppliesTo{
 				Principals: []types.EntityType{"MyApp::User"},