diff --git a/packages/editor-ui/src/composables/__tests__/useNodeHelpers.test.ts b/packages/editor-ui/src/composables/__tests__/useNodeHelpers.test.ts
index 1969b3d5b8..732bf51f5e 100644
--- a/packages/editor-ui/src/composables/__tests__/useNodeHelpers.test.ts
+++ b/packages/editor-ui/src/composables/__tests__/useNodeHelpers.test.ts
@@ -3,6 +3,7 @@ import { createTestingPinia } from '@pinia/testing';
 import { useNodeHelpers } from '@/composables/useNodeHelpers';
 import { createTestNode } from '@/__tests__/mocks';
 import { useWorkflowsStore } from '@/stores/workflows.store';
+import { CUSTOM_API_CALL_KEY } from '@/constants';
 
 vi.mock('@/stores/workflows.store', () => ({
 	useWorkflowsStore: vi.fn(),
@@ -17,6 +18,34 @@ describe('useNodeHelpers()', () => {
 		vi.clearAllMocks();
 	});
 
+	describe('isCustomApiCallSelected', () => {
+		test('should return `true` when resource includes `CUSTOM_API_CALL_KEY`', () => {
+			const nodeValues = {
+				parameters: { resource: CUSTOM_API_CALL_KEY },
+			};
+			expect(useNodeHelpers().isCustomApiCallSelected(nodeValues)).toBe(true);
+		});
+
+		test('should return `true` when operation includes `CUSTOM_API_CALL_KEY`', () => {
+			const nodeValues = {
+				parameters: {
+					operation: CUSTOM_API_CALL_KEY,
+				},
+			};
+			expect(useNodeHelpers().isCustomApiCallSelected(nodeValues)).toBe(true);
+		});
+
+		test('should return `false` when neither resource nor operation includes `CUSTOM_API_CALL_KEY`', () => {
+			const nodeValues = {
+				parameters: {
+					resource: 'users',
+					operation: 'get',
+				},
+			};
+			expect(useNodeHelpers().isCustomApiCallSelected(nodeValues)).toBe(false);
+		});
+	});
+
 	describe('getNodeInputData()', () => {
 		it('should return an empty array when node is null', () => {
 			const { getNodeInputData } = useNodeHelpers();
diff --git a/packages/editor-ui/src/composables/useNodeHelpers.ts b/packages/editor-ui/src/composables/useNodeHelpers.ts
index 00f18041b0..19e46339bc 100644
--- a/packages/editor-ui/src/composables/useNodeHelpers.ts
+++ b/packages/editor-ui/src/composables/useNodeHelpers.ts
@@ -97,11 +97,13 @@ export function useNodeHelpers() {
 
 		if (!isObject(parameters)) return false;
 
-		if ('resource' in parameters && 'operation' in parameters) {
+		if ('resource' in parameters || 'operation' in parameters) {
 			const { resource, operation } = parameters;
-			if (!isString(resource) || !isString(operation)) return false;
 
-			return resource.includes(CUSTOM_API_CALL_KEY) || operation.includes(CUSTOM_API_CALL_KEY);
+			return (
+				(isString(resource) && resource.includes(CUSTOM_API_CALL_KEY)) ||
+				(isString(operation) && operation.includes(CUSTOM_API_CALL_KEY))
+			);
 		}
 
 		return false;